There is also a dielectric material placed above the conductor. Example 3. e. Share. This article establishes and analyzes the basic Marchand Barron's lumpedthe transmission line calculator. Microstrip Impedance Calculator. To behave similarly, the reactance of the tank inductor will be equal to 4/ π times the line impedance. 6 GHz f Higher-Microstrip = c / ( 4 h ε r − 1) = 10. Polar or rectangular grids only allow direct reading of S11. 2 nH inductance at 6 GHz using microstrip line with characteristic impedance (50. The reason these are so popular is that they can be mass produced. Conductor. TX-LINE software is a free and easy-to-use Windows-based interactive transmission line calculator for the analysis and synthesis of transmission line structures. Target Impedance (Z0) Trace Thickness (t) mils. The Differential microstrip impedance calculator is used to compute the differential (Zd) and single-ended impedance (Zo) of an edge-coupled microstrip line just by entering the width, separation and thickness of the trace along with the dielectric thickness and constant of the coupled line. Frequency: Frequency at which the stripline is analyzed or. H 4 The characteristic impedance Z c for any microstrip transmission line of width W (i. When in doubt, use 1 for copper, . 8 GHz and with a characteristic impedance of 75 ohms. There is a dielectric material between them. TX-LINE software enables users to enter either physical or electrical characteristics for common transmission mediums: microstrip, stripline, coplanar. QUCS/ADS linecalc gives: 2mm at 5GHz. Example. I just want to see how the line behaves when a square pulse is sent and, for example, a resistor terminator. But the choice of transmission-line technology, such as microstrip or grounded coplanar waveguide. 0565e-07 G: 9. Output. Instead of modelling the volumetric strip’s deeply subwavelength thickness which can be computationally intensive, a 2D rectangle is used instead. This is a tool I developed to assist us at the Cambridge University Spaceflight Club to design a patch antenna for telemetry. From here, we can see that there are specific stack-ups where a CPW and a microstrip/stripline will have 50 Ohm impedance and the same trace width, even though the ground clearance is quite close clearance to the trace in the CPW. Determine the best BISCO® silicone or PORON® polyurethane material for specific design application. Then the transverse field is dominant and the fields are called quasi-TEM. Stripline is a transmission line trace surrounded by dielectric material suspended between two ground planes on internal layers of a PCB. Design a microstrip line around 1. A transmission line calculator for RF/microwave engineers. Transmission line loss on MMICs (microstrip or coplanar waveguide) is about 10X worse than coax, or 100X that of waveguide (but the lengths of the transmission lines are really. Result: Microstrip Patch Antennas (or simply patch antenna) are increasingly useful because the antenna is printed directly onto a circuit board. 188 mm. It was invented because of the undesirable effects on coaxial cable when signals in the microwave range propagate through it. Introducing the newest version of the Microwave Impedance Calculator from Rogers’ Advanced Connectivity Solutions. The characteristic impedance (Z 0) of a transmission line is the resistance it would exhibit if it were infinite in length. Hello, It's difficult to do what you called 'simulation of microstrip line using MATLAB', but if you just want to have a width and length value, for certain impedance and electrical length at certain frequency, you could get it from transmission line calculator from Microwave Office or ADS. Here's microstrip on 10 mil quartz. Using this calculator, the. Γ0 = Z01 − ZS Z01 + ZS Γn = Zn + 1 − Zn Zn + 1 + Zn ΓN = ZL − Z0N ZL + Z0N. Asymmetric and symmetric versions of a stripline can be implemented with this calculator application. 1 (2). txline = microstripLine; txline. A stripline has two references, often multiple ground planes, and are surrounded with the dielectric. A signal travels on a PCB transmission line at a slower speed, affected by the dielectric constant (Er) of the PCB material. 45 for gold. The microstrip line is a commonly used transmission line configuration in high-frequency and microwave engineering. For example on 0. (© CC BY SA 3. 725. Here's a simple spreadsheet that will help you understand the concept of frequency translatorsCoupled-line filters are also compact and can be implemented in microstrip configurations or most of the other transmission line technologies. Caculation of RLGC Parameters of TEM Transmission Lines The only things that would matter are: 1) if the line length were very long, say 4 inches, the signal will loose some of its power. The calculator works bidirectional. A stripline is formed by a conducting strip in a substrate sandwiched by ground planes above and below the strip. Microstrip Calculator. Just as was the case with microstrip impedance calculators, stripline impedance calculators tend to rely on either the IPC-2141 formulas or on Wadell’s equations. Introduction to dispersion diagrams and eigenmode simulator. The microstrip line is a planar transmission line that is used prominently in RF and microwave circuits. 3. ±1% in h, ±2% in ±1% in C. This calculator can calculate the impedance and propagation delay of the embedded microstrip. z0_f = getZ0 (txline,freq) returns the characteristic impedance with dispersion for a transmission line at the specified frequency. The picture shows a transmission line with a 50 Ohm impedance and an electrical length of 90 degrees at 950 MHz. 125 × W ≤ S ≤ 4. Page 3 of 9 When we refer to just a “transmission line”, are we referring to a real physical. Introduction The Microstrip Transmission Line Calculator is an essential tool used by engineers, students, and researchers to calculate the characteristics of a microstrip transmission line. Cross-sectional view of three common transmission line circuits . 946 for silver, or 1. 3: Normalized characteristic impedance and normalized effective permittivity of a microstrip line as a function of u = w / h. Skin Depth Calculator. This document covers the theory, design steps, simulation and verification of various types of power dividers, such as Wilkinson, T-junction, and branch-line. The layout (or top) view is commonly used with circuit designs using microstrip. Pasternack PCB Microstrip Calculator is an online calculation tool that lets you compute a microstrip's height/width ratio, impedance and relative dielectric constant for a microstrip transmission line. Hence, verifying the computed response by comparison with the measured one validates the extracted transmission-line parameters. 667ln 1. Microstrip lines have three parameters that we can change to achieve 50 ohm impedance: Due to design constraints, there is only one parameter (track width,) left to achieve 50 ohm. To create a 50 Ohm microstrip you need to know: 1) the dielectric constant of the PCB material between the strip and the ground plane; 2) the thickness of the PCB material between the strip and. transmission line calculator for the analysis and synthesis of transmission lineNote the stub is attached in parallel at the source end of the primary line. of the feeding microstrip transmission line (width W 0). Line Width (W) in mils. Transmission Line Calculators 5. 393 0. microstrip returns a microstrip transmission line object whose properties are set to their default values. 5 mm between the strip and ground planes on either side. Conductivity = 5. As a rough estimation, it can range from 100 ps/inch to 200 ps/inch. zo depends upon the geometry and the material of the transmission line. The trace and the ground plane are separated by a certain height of PCB dielectric as shown in the image below. 109-115, November 1989. 1t for W/h ≤ 1 and Wr = W + 1. microstrip (Name,Value) sets properties using one or more name-value pairs. 3. Match a load with impedance ZA=100 Ohms to be 50 Ohms using a quarter-wave transformer, as. Application Design Tool. This delay results in timing errors, data skew, clock, and data mismatches, and causes reliability issues. ε R. The dielectric material and the air above the microstrip makes it a transmission line with the inhomogenous dielectric. 2: Stepped-impedance transmission line transformer with the n th section having characteristic impedance Z0n and electrical length θn. 5 GHz. Microstrip Characteristic Impedanceloaded is replaced by a microstrip transmission line, which is closer to the actual demand. The formulas for calculating the signal speed on a PCB are given below: Where:04/03/2007: Microstrip Patch Antenna: From Simulation to Realization added in the TutorialsTools section. While commonly constructed using printed circuit boards, this structure can also be built using other materials as long as there is a conductor separated from. Microstrip Width Formula or Equation. 1. 2. SunnySkyguy it is assumed we want to synthesis a 50-ohm microstrip transmission line, consider er = 4. Therefore a new concept emerged: substrate integrated waveguide. This coupling is one of the features of differential traces. 725. 1. For each type of transmission line, using dialog boxes, you can enter values for the various parameters, and either calculate its electrical properties (analyze), or use the given electrical requirements to sythesize physical parameters of the required transmission line. Microwave Engineering. Figure 8 shows the fabricated bandstop filter showing a microstrip transmission line on top and CSRR etched on the bottom ground plane. View All Tools. The patch cutout for the feed inset should be > 2 times the microstrip width. The Differential microstrip impedance calculator is used to compute the differential (Zd) and single-ended impedance (Zo) of an edge-coupled microstrip line just by entering the width, separation and thickness of the trace along with the dielectric thickness and constant of the coupled line. While commonly constructed using printed circuit boards, this structure can also be built using other materials as long as there is a conductor separated from. Copper is a suitable material for flat conductors. ♦ Use the Linecalc transmission line calculator tool within ADS to determine dimensions for microstrip lines needed in the ‘real’ quadrature coupler schematic (refer to Procedure #5 Using the Linecalc Program in ADS). 4: Microstrip Transmission Lines. 5 times the substrate height h away from the microstrip line. Tutorial 2: Dispersion Diagram I: Parallel Plate. So, the Microstrip line was compared to an antenna, and it wasn’t until about 15 years. 388 Ω Pseudo color visualization of absolute value of the electric field. Planar transmission lines have moderate (Q)s especially at high frequencies, due principally to. H. microstrip returns a microstrip transmission line object whose properties are set to their default values. 7 (a)) ΔΓ = (Z0(z) + Δz) − Z0(z) (Z0 + ΔZ) + Z0(z) = ΔZ 2Z0(z) + ΔZ ≈. One of the features of this type of microstrip is the coupling between lines. SIW is a transition between microstrip and dielectric-filled waveguide (DFW). If you want a thinner microstrip, you need to reduce the substrate height using one of the following solutions: Use a thinner 2-layer PCB, for example 0. • Each port in a structure being analyzed can be viewed as a cross-section of a transmission line. Microstrip. transmission lines [5–7]. Simulation setup for microstrip fed patch antenna. Hits: 6158. The amplitude of this crosstalk is what this tool calculates. From here, we can see that, for the dielectric constant and layer stack I’ve used, a ~16 mil microstrip will have about the. 631-647, Aug. On the other hand, microstrip will radiate more energy due to its exposure on an exterior layer to air. 74mm. 8e7; txline. I will try my best to help. Since the length has already been calculated, the only parameter left to calculate is the width of the Zl and Zh transmission lines for the stepped impedance low pass filter. Advantages of a Microstrip Transmission Line . 2 GHz results using tool interface, (2): (a) Microstrip transmission line (b) General structure of parallel coupled microstrip filter (c) Equivalent. 7. Modeling approximation can be used to design the microstrip trace. Name = 'Copper' ; txline. Learn how to design microstrip and CPW power dividers using Keysight EEsof EDA tools in this technical overview. Resistance in mOhm/inch. Patch Antenna Calculator. Here's a "reverse microstrip calculator" a spreadsheet that lets you specify impedance and solves for line width. Denlinger, IEEE Trans. Also, take into consideration the board's dielectric thickness and. Tutorial 1: Microstrip Patch Antenna. 2 Low Impedance; The formulas developed in Section 4. Atwater, “Simplified Design Equations for Microstrip Line Parameters”, Microwave Journal, pp. 4, h (height) = 1. The width of the conducting layer is important to calculate. The electrical parameters may be determined from specified physical parameters, or the physical parameters required to meet a given set of electrical parameters may be found. The synthesis portion calculates the required physical parameters to meet desired electrical. The next graph investigates this further. 3%, are. Waveguides are used to transmit electromagnetic energy from one place to another place and they are usually operating in dominant mode. Dielectric loss in a PCB transmission line. Where I is maximum current in Amps, k is a constant, dT is temperature rise above ambient in °C, & A is cross sectional area of trace mils². To verify the design, assemble a circuit using 50-Ohm microstrip transmission lines for the matching networks. Microstrip transmission line: It is composed of a single uniform trace located on the outer layer of a board and parallel to a conducting ground plane. These parameters are crucial in designing and. The microstrip line will be designed on a substrate with a dielectric constant of 10. microstrip; analyze (stubTL4,freq); Z0 = stubTL4. Schematic representation of a PCB patch antenna: The calculator is based on simplified formulas for calculating microstrip transmission lines and is intended for preliminary calculation only. This calculator is heavilly based on . A microstrip transmission line, shown in the upper left corner of figure 1, is a simple two copper layer circuit with the signal conductor on top and a ground plane on the bottom. Impedance in Ohms. Description. Inputs T. For example, if you wish to input "25000000", just type "25M" instead. Track Thickness: mm. ne. Perhaps the most common type of transmission line is the coax. 3. This means that the transmission line possesses air over it. Microstrip Transmission Line Models. A microstrip is a type of transmission line that consists of a conductor fabricated on dielectric substrate with a grounded plane. Rogers. transmission-line length according to the transmission-line param-eters of the specific line. Quarter-wave impedance transformer placed between a transmission line with impedance Z0 and load with impedance ZL. Stripline and microstrip are methods of routing high-speed transmission lines on your PCB. Introduction to dispersion diagrams and eigenmode simulator. At low frequencies, where skin depth is greater than conductor width and thickness is greater than ground plane thickness, ac resistance is approximately the same as the dc resistance. 0 (modified)) A microstrip line is single-ended 1 in the sense that the conductor geometry is asymmetric and the one conductor – namely, the ground plane – also normally serves as ground for the source and load. 1. Microstrip Capacitance. If the dielectric constant of the material is not known, you can choose to put in the velocity of. Description. Topics include transmission lines, waveguides, two-port microwave circuits, matching, tuning, resonators, dividers, and directional couplers. where Z 0,surf can be computed as specified in Eq. Impedance calculation Using the Microwaves101 microstrip calculator, we see that 50 ohms on 10 mil alumina corresponds to 9. Quarter-Wave Microstrip Directional. Microstrip lines are used to convey microwave -frequency signals. The width of the conducting layer is important to calculate the radiation intensity since it directly affects the bandwidth of the signal waves. There are some advantages to. 2 are defined as. 44 x A0. For example, if u = 1 and ε r = 10, then from the figure, Z 0 ε e = 126 Ω and ε e / ε r = 0. It is composed simply of a discrete insulated wire spaced a fixed distance over a ground plane. The characteristic impedance (Z o) of a microstrip transmission line can be calculated using the active calculator or the formula at the bottom of the page. Contents. Microstrip Transmission Line Models. Coax loss will be about 10X higher (in dB). Microstrip patch antenna input impedance in the fundamental mode (i, j, k) = (1, 0, 0). The central strip has a width of 2. Consider a microstrip transmission line from Transmission Lines. Dielectric filled waveguide is converted to substrate integrated waveguide (SIW) by the help of vias for the side walls of the waveguide. If the ratio (L/W) is close to unity, the radiation pattern will be symmetric but may not provide a resonable. This parameter is used for the loss calculations. Internal traces : I = 0. 8e9); rfplot (spar)A better estimate of the frequency where the higher-order microstrip mode becomes a problem is given by Equation (5. Just about any signal in a high-speed design can behave like a transmission line, including data, memory, clocks, controls, and any other nets in the design. Introduction The Microstrip Transmission Line Calculator is an essential tool used by engineers, students, and researchers to calculate the characteristics of a microstrip transmission line. Thickness: Thickness of the microstrip conductor. The MWI-2017 Microwave Impedance Calculator software is able to calculate key parameters for most common microwave transmission lines, including microstrip, stripline, and coplanar-waveguide transmission lines. Verified with Agilent LineCalc and Agilent Momentum simulations. Relative Dielectric Constant ( εr ): Track Width: mm. Wcalc is a tool for the analysis and synthesis of transmission line structures and related components. The exact fields of a microstrip transmission line constitute a hybrid transverse magnetic-transverse electric (TM-TE) wave, which requires more advanced techniques for analysis [2]. Sorted by: 1. This is a required field. In your case we can start with an estimate of 50 ohms knowing that the Zodd impedance will be reduced by both coupling and solder mask. The dielectric constant of air is 1,and the dielectric constant inside the pcb stackup is usually 1. The key is how fast the signal speeds are that you are working with. Figure 5. 3 shall be used. Then choose Coupled Microstrip in the Transmission Line Type selection box. This calculator determines the differential microstrip impedance of a transmission line. 2 and a height of 1. 444 c h W W. 3. As seen here:Comparison of stripline vs. Transmission line attenuation Rule of Thumb #80. g. The microstrip impedance calculator shown above uses Wadell’s equations for microstrip impedance, which can be found in the seminal textbook Transmission Line Design Handbook. If the calculator does not provide velocity (or velocity factor), it's probably because you can use e_eff instead. A quarter wave transformer is used to match two transmission lines with different impedances. result by **broken link removed**The layer of the PCB that the transmission line is routed on and the dielectric constant of the PCB materials are also used to calculate the impedance of these types of traces. A course concerning distributed-elements analysis and design of electric circuits at microwave frequencies. In conclusion, the Microstrip Transmission Line Calculator is a powerful tool that helps engineers and technicians design microstrip transmission lines with ease. When using shunt components, the best case is clearly the use of a thinner substrate, where the characteristic impedance of the microstrip line stays relatively constant over a wide. ANALYSIS OF MICROSTRIP TRANSMISSION LINES 81 tained from this structure by letting ei* = e2*, 3*'=1, and d--><*>, where ei*, 2* and 3* are the relative dielectric constants. In most practical cases, the dielectric substrate is electrically thin, that is, h ≪ λ. The need for smaller size microwave integrated circuits has led to the development of the microstrip transmission line. Sending-end port A ~ A' B B' Transmission line Generator. Depending on circuit sensitivity, the distributed. 5. The dielectric is usually made of glass-reinforced epoxy such as FR-4 or PTFE for very high frequencies. 2mm at 10GHz. Our RF calculators and converters will provide the figures you need for your radio frequency engineering needs. TRANSMISSION LINE GEOMETRY Microstrip and Stripline geometries as used in the Transmis-sion line RAPIDESIGNER are defined as shown below. Such a stripline is constructed with two traces referenced to the same reference planes above and below the traces with a dielectric material between them. λ is the wavelength of the signal in free space. to free space (ε. Reference: R. 19. The microstrip calculator determines the width and. In this section the theory behind the synthesis of a taper is developed beginning with the theory of small reflections. You get the idea. Metal loss is reduced by thicker substrates, and is almost inversely proportional. Assumptions and Limitations. 1 < εe < εr. 2 and:Description. Microstrip Impedance Calculator. With hundreds of coaxial RF cables in-stock and ready to ship worldwide immediately, our coax capacitance calculator lets you calculate the impedance of a coax by allowing you to enter the outer diameter dielectric width and inner conductor diameter. Tutorial 2: Dispersion Diagram I: Parallel Plate. 9 GHz. New Online Microwave Impedance Calculator. Microstrip Wavelength Calculator A tool designed to calculate the guided wavelength inside a microstrip. 44 x A0. Figure 23. To calculate the width of a microstrip, you will need some parameters. 19. I am going to route Ethernet differential par in a four layer PCB which contains Top, PWR planes, GND plane and Bottom stackup. This type of transmission line might be a signal wire used within a breadboard, for example. 4 in. Then the transverse field is dominant and the fields are called quasi-TEM. The effective dielectric constant drives the length of the taper, this effect was not. Click here to go to our page on microstrip loss. These radio frequency calculators help with unit conversion, attenuator design, antenna design, radars, and various other basic calculators. 3. Wheeler, "Transmission-line properties of a strip on a dielectric sheet on a plane", IEEE Trans. It also provides examples and references for further reading. Microstrip Calculator computes a microstrip's height/width ratio, impedance and relative dielectric constant for a microstrip transmission line. This calculator is designed to calculate the inductance of a microstrip given its dimensions (width, length and the distance of. 1 Matching of microstrip lines to the source The characteristic impedance of a transmission line of a microstrip feed patch is designed with respect to the source impedance. 2 enable the electrical characteristics to be determined given the material properties and the physical dimensions of a microstrip line. For example on 0. 1 of the Microstrip Calculator using H2 in place of h, εr,eff can be computed as specified in Eq. 6 GHz f Higher-Microstrip = c / ( 4 h ε r − 1) = 10. 4: Microstrip Transmission Lines. 2. Tutorial 1: Microstrip Patch Antenna. This can be set to zero, but the calculated loss will not include conductor losses. 71. Shielded double-layer microstrip line. These equations are. 2 1. Choose a calculator to tune your PCB design. 7. Coding Example. Chemandy on the other hand tells me 14. Transcalc uses. For example, with microstrip, you can specify the substrate parameters (primarily thickness and dielectric constant) and use Linecalc to calculate the impedance for a given line width; this is the “analysis” mode. A single microstrip was analyzed results obtained for a parallel coupled microstrip band pass and then used for coupled line sections by making some filter for WiMAX applications at. It was designed to have a characteristic impedance of roughly 50 Ohms. Parallel-plate Transmission Line 3. ) attenuator synthesis (resistive pi, tee, bridged-tee and splitter topology)4. 946 for silver, or 1. or to add a "microstrip tee juction" or "microstrip corner" between the main transmission line and. A cross-section of a microstrip transmission line is shown below. The above equation is important: it states that by using a quarter-wavelength of transmission line, the impedance of the load (ZA) can be transformed via the above equation. For now let us focus on the single ended impedance. [z0,eff_ep] = getZ0 (txline) returns the characteristic impedance and effective epsilon without dispersion for a microstrip or coplanar waveguide (CPW) transmission line. A cross-section of a microstrip transmission line is shown below. The characteristic impedance (Z o) of coplanar waveguide with ground or microstrip lines with signal side ground plane can be calculated using the active calculator or the equations at the bottom of the page. February 28, 2022 · Infinus. The diagram below shows how to implement a quarter-wave line for impedance matching between a transmission line and a real load impedance. The Microstrip Impedance Calculator is an online tool designed to help engineers and technicians calculate the characteristic impedance of a microstrip transmission line. 2. One should always check carefully whether a calculator implements these equations under the appropriate approximations. Backwards crosstalk creates a pulse width that is twice that of the propagation time of the pulse traveling the coupling distance. 1 is a short length of short-circuited line which looks like an inductor. 8. So two estimates have been calculated for the frequency at which the first higher-order. Supported transmission lines: Microstrip Line. The aim here is to develop design guidelines that will enable transmission line structures to be designed to avoid multimoding. An edge couple differential microstrip transmission line is constructed with two traces referenced to the same reference plane. 1: 300-to- 50 Ω match using an quarter-wave section of line. Shows how to use QucsTransline, the transmission line calculator of QucsStudio. Simons, "Coplanar Waveguide Circuits, Components, and Systems", Wiley. Microstrip Transmission Line Models. There's nothing special about microstrip. 2 Answers to Selected Exercises. Figure 3 Measured. Gain Uncertainty due to Mismatch Calculator. In this model,EEWeb offers a free online microstrip crosstalk calculator. Learn how to design microstrip and CPW power dividers using Keysight EEsof EDA tools in this technical overview. Users need only specify the material. Microstrips (relatively-high-frequency) A microstrip is a trace that is created in such a way as to allow it to behave like a transmission line. 4mil and the dielectric thickness to the first intermediate layer (this is a 4-layer board) is 6. In this example, the characteristic impedance of the microstrip transmission line is controlled through the trace’s width. Dielectric Thickness: mm. Enter the Height, Width and Permittivity to get the Impedance of the Microstrip Note : The unit of the height and width entered must be the same. 3 (b), for example, is best modeled using lumped elements describing the junction as well as the transmission line of the stub itself. a) The effective relative permittivity of the substrate. All transmission lines are 1 ounce thick (1. Enter the values of trace width (w), trace thickness. A microstrip is a transmission line used for signals in the microwave range. Embedded Microstrip. 5. Rho: Conductor resistivity relative to copper. Apisak Worapishet. Stripline Impedance Calculator. Mitchai Chongcheawchamnan. The Smith Chart graphically maps S11=reflection coefficient= (ZL-Z0)/ (ZL+Z0) to Load Impedance (ZL), normalized to Z0 (source impedance = center of chart). Following formula can be derived for the characteristic impedance of a parallel wire transmission line: 1. 5. As frequency increases, ac resistance. A Microstrip is a type of transmission line in which a strip of a conducting material like copper is mounted on a dielectric material and routed to a ground plane. The reflection coefficients at each boundary in Figure 7. 5 mm with a gap of 1. 15, in this work theTransmission Line . 4mm PCB for a trace width of 0. The microstrip calculator determines the width and length of a microstrip line for a given characteristic impedance (Zo) and electrical length or vice versa. That means on ten mil (254 micron) alumina, the width for fifty ohm microstrip will be about 9. Visit to learn more about our other electrical engineering tools. When attempting to download & install from Norton 360 (antivirus software) removes the installation program. From short-lines into the long-line regime, the analysis shows behavior of the load voltage (VL) using lumped and distributed element calculations for a lossless transmission line (where R=G=0). Also set Dielectric Constant=4. Single-stub matching is a very common method for impedance matching using microstrip lines at frequences in the UHF band (300-3000 MHz) and above. The calculator produces more accurate results than the IPC formulas for impedance because it implements a more. Using the microstrip line calculator, a width of 1. This is because the microstrip line is lossy. The microstrip line calculator helps to determine the length and width of a microstrip line for characteristic impedance and electrical length. It is suitable for the production of flat structure transmission lines of microwave integrated. 13 from Pozar [1] in which a single-section quarter-wavelength transformer is designed to match a 350 Ohms load to a 100 Ohms microstrip transmission line at an.