Noise factor is a measure of how the the signal to noise ratio is degraded by a device: F=noise factor= (S in /N in )/ (S out /N out) Where S in is the signal level at the input. Following equation or formula is used for Horn Antenna calculator. Cascaded Noise Figure calculator Chebyshev filter designer Coplanar GB waveguide calculator C-Coupled Resonator designer Coax Impedance calculator Chip Resistor De-rating calculator dBm/Linear power converter. It include antenna gain calculator, Antenna G/T ratio calculator, coaxial cable Impedance calculator, Noise temperature to Noise Figure Converter, Radar Range Calculator, resonant frequency calculator, wavelength to. When the load or antenna impedance, Z (whether real or complex) changes we get different values of VSWR that fall in this range. Skin Depth Calculator. The calculator is a spreadsheet that accepts VSWR specifications for all the components in your RF Path—tower mounted amplifiers, diplexers, bias tees, etc. Noise Factor to Noise Figure Calculator. The following table provides conversions for wavelength (from frequency), VSWR (from forward and reflected power). Specify the bandwidth and SNR and Noise Factor ( Set noise factor) to obtain the sensitivity in dBm or dBuV (50 Ohms). 4 (a) Normalized line voltage 1 + . 36Ω), the impedance is: Transformed through 25 feet of RG-8 coaxial cable to 111. If there is something in the microwave universe that you need a different calculator for, drop us a note and we'll see what we can. References. 5:1 device can yield a 3. What is VSWR? VSWR (Voltage Standing Wave Ratio) is the measure of how efficiently RF power is transmitted in to a load. Determining the noise and distortion as a progression through the RF chain is known as cascade analysis. - Applied attenuation. If you are completely new to python, see. Here you get the possibility to do different calculations. Unit Converters. Thus, gain for an active device gets deviated because of this mismatch which leads to unstable. Unlike a Vector network Analyzer, it does not measure both amplitude and phase of the DUT. An operational amplifier (op-amp) is a voltage amplifier with a differential input. RF & Electronics Symbols for Visio. Here's a simple VSWR calculator. This is expected behavior in the pass band of the filter where the match should be close to ideal. Conversions: nf = 10 NF/10 ↔ NF (dB) = 10 * log 10 (nf) where nf is a unitless ratio and NF has units of dB. Application Note File. AppCAD is an easy-to-use program that provides you with a unique suite of RF design tools and computerized Application Notes to make your wireless design job faster and easier. It includes Reflection conversion table, Wavelength Calculator, dBm to Watts converter, cascade VSWR, and Touchdown Points. 1, for system 2 is 0. PLL loop filter calculator This tool will calculate the component values for a 3rd order loop filter. And it follows by similar reasoning that all ports have the same VSWR if loaded by Z 0. This calculator uses JavaScript and will function in most modern browsers. The ideal condition, where NEW Version V2323, released on 31 May 2023, FREE DOWNLOAD, WinRFCalc is the best Windows RF calculator toolbox for EMC, RF and Radio engineers. Resonators (λ/4-Wave Coaxial) Return Loss / VSWR / Gamma. The noise figure number, displayed in decibels (dB), represents the performance by which an amplifier or RF receiver can be measured. Antennas, Unit-Conversions, VSWR, RF power, DSP, EMC and much more RF related topics. The V05CAL Series from OML Inc. In the ZL box, type 50 Ω. A broadband microwave component is normally characterised by its VSWR and insertion loss measured at the design characteristic impedance. In an RF system, when power is sent from the source to load, there are three main parameters to be considered: (1) incident power. Start by choosing the number of stages. a = outside radius of inner conductor (inches) b = inside radius of outer conductor (inches) c = speed of light in a vacuum = 299,792 km/s = 186,282 mi/s. 1. 44. This online VSWR Calculator is also very useful. A quadrature coupler is one in which the input is split into two signals (usually with a goal of equal magnitudes) that are 90 degrees apart in phase. 1, for system 2 is 0. 1) Introduction. Download the S-parameter mixer. Appcad is a software tool from Avago Technologies for personal users absolutely free of charge. 5 GHz, 3. In order to obtain a cascaded noise figure performance of 9. **Note: All of our calculators allow SI prefix input. Cavity resonance calculator. e. This is equal to a return loss of 14 dB or greater. It is popularly used as feed in the cassegrain antenna. Python programmieren lernen pdf converter. This Javascript calculator converts between return loss (RL), voltage standing wave ration (VSWR), and reflection coefficient (Γ). 5 GHz. Traditional cascaded noise figure equations are not used in Spectrasys. VSWR MAX = 2. VSWR MIN = 2. Aug 6, 2019. These reflections are very undesirable when we aim to transfer power from one. dBm To Watt Calculator. VSWR Calculator. The lower noise figure number, the better. Combining 2 Stages at a Time for Calculations. For example connecting a 2. Calculates Chebyshev response analog filters up to the 9th order. The need for the gains provided by cascade amplifiers is paramount to the functionality of various applications. Cascaded Noise Figure calculator Chebyshev filter designer Coplanar GB waveguide calculator C-Coupled Resonator designer Coax Impedance calculator Chip Resistor De-rating calculator dBm/Linear power converter. 295-49. For Example WR-650 means a waveguide whose cross section width is 6500 mils. ; Please Support RF Cafe by purchasing my ridiculously low−priced products, all of which I created. e. Note that the VSWR and reflection coefficient are just different ways to represent return-loss. Products such as programmable attenuators, phase shifters and IQ modulators are used as amplitude and/or phase control devices in system applications. 2. VSWR/Return loss converter Wavelength calculator Wilkinson splitter designer. dBm Calculator: As we know Decibel in dB can be calculated as: dB= 20log(V1/V2)= 10log(P1/P2) If we put P2 = 1mW = . This attenuation calculator provides as output to the user the original. These calculators help with unit conversions, VSWR calculations, attenuator design, antenna design, radars, and various other basic. 0 = 5. Overview. The first major new release of RF Cafe's spreadsheet (Excel) based engineering and science calculator is now available: Espresso Engineering Workbook™. For five t-line sections each having a VSWR of 1. These are the standard set of equations for converting between VSWR, return loss, and reflection coefficient (Γ). To help the engineers conducting VSWR sweeps, Lou developed the PIM and VSWR. A significant challenge for RF designers is the optimization of an RF chain for noise and distortion performance. Free Space Path Loss Calculator. A series of RF calculators for radio frequency engineers. Cascaded Noise Figure calculator Chebyshev filter designer Coplanar GB waveguide calculator C-Coupled Resonator designer Coax Impedance calculator Chip Resistor De-rating calculator dBm/Linear power. PI Attenuator Calculator. Even though the effect of VSWR interactions between stages is not included when performing the calculations, the results are a good first order approximation of the cascaded performance of the system. 5) best case if the reflected. Preflected watts. Return loss is when the transmitted signal is not completely. Converts VSWR into dB. This can123doc Cộng đồng chia sẻ, upload, upload sách, upload tài liệu , download sách, giáo án điện tử, bài giảng điện tử và e-book , tài liệu trực tuyến hàng đầu Việt Nam, tài liệu về tất cả các lĩnh vực kinh tế, kinh doanh, tài chính ngân hàng, công nghệ thông1) VSWR Calculation. 12:1, which is a. The calculated value is MUCH worse. Return Loss = -10 x log [Source Power/ Reflected Power]. Zero . Cascaded Noise Figure calculator Chebyshev filter designer Coplanar GB waveguide calculator C-Coupled Resonator designer Coax Impedance calculator Chip Resistor De-rating calculator dBm/Linear power converter. - VSWR <--> Return Loss <--> Γ Conversion. If we represent the Input power Vs Output power of an amplifier on a graph, we get a straight line (Linear Relationship) i. The 85059B from Keysight Technologies is a VNA Calibration Kit with Frequency DC to 130000 MHz. 707. e. RF & Synthesis Tools. 8 Ω. VSWR Calculator. Radio Frequency Engineering Calculator. Insertion loss is almost universally expressed in decibels (dB), and is generally supposed to be a positive number but we forgive you in advance if you ever say "this attenuator has -9. 0x1. Cascade Calculator (Active / Passive) pop-up Provides performance values for system level Gain, Noise Figure (NF), P1dB compression and Output IP3 for up to 20 cascaded. R 1 requires the low cut-off frequency F L and the capacitance of C 1. 01 November 2023, 18:15 CEST. This VSWR calculator allows you to calculate the reflection coefficient, reflected power, and mismatch loss for a given value of VSWR (voltage standing wave ratio). Noise Figure (NF), P1dB compression and Output IP3 for up to 20 cascaded passive and active components in a chain. For example, if you wish to input "25000000", just type. Friss, free space path loss calculator. VSWR = Voltage standing wave ratio. click on any item below to see example plots:Intermodulation calculators. Port 4 is the port which provides the reflected measurement (Return. Calculation of each resistor value requires two inputs. As an example, if the return loss of the amplifier is 4 dB, use the calculator below. 5dB, determine the required IF amplifier noise figure using the well known cascaded noise factor equation where noise figure (in dB) equals 10 * log (Noise Factor) where Noise Factor is numeric. 1) (2. Voltage standing wave ratio (VSWR) is defined as the ratio between transmitted and reflected voltage standing waves in a radio frequency (RF) electrical transmission system. Two cascaded tuners with VSWR=100:1 (capable of 0. Note that if you added the losses of the connectors (2. Microstrip Patch Antenna Calculator Calculate dimensions and edge impedance for desired resonant frequency. Cascade-Line GaN SSPA BUC . Simply select the tool that best suits your purpose. A set of 4 calculators with Butterworth response filters for analog low-pass, high-pass, band-stop and band-pass. 6. An equation for the prediction of the Return Loss of cascaded systems has been previously presented and validated. VSWR :1 : Input Power [dBm] [W] Reflection Coefficient :The VSWR/Return Loss Calculator will find VSWR, Return Loss, Mismatch Loss, and the Reflection Coefficient based on any one of the listed inputs. Insertion loss is only defined for two port networks, but you could bastardize the definition. Please. In cases where optimum performance isFor example, an antenna with a VSWR of 2:1 would have a reflection coefficient of 0. 0. 5 GHz. A fine-tuned understanding of these metrics can guide an engineer to enhance system performance, optimize power transmission, and develop breakthrough solutions. e. RF Calculators. 005 Γ 0 0, 1 01 VSWR 1 0and RL 40 dB, which is difficult to achieve in reality. Stage 2. VSWR/Return loss converter Wavelength calculator Wilkinson splitter designer. The gain uncertainty arises due to impedance mismatch between the device and another connected device (e. In the ZS box, type a value of 75 Ω. 51. A Typical Chain of Cascaded Components. Cavity resonance calculator. |. Low VSWR; Special low VSWRMicrostrip Impedance Calculator. The tool then calculates all frequencies that would alias and give rise to Fspur. Return Loss (dB)Wavelenght calculator TouchDown points Cascade VSWR Kathrein scala division hope it'll be helpful ^^ Share: Post Thanks - 1 Thanks. May 8, 2018. VSWR (Voltage Standing Wave Ratio) and Return Loss both measure the same parameter i. RF calculations and conversions include metric-standard, link. It is due to inherent imbalances in directional devices. The VSWR/return loss calculator from Pasternack will find VSWR, return Loss, mismatch loss, and the reflection coefficient given any one of the listed input types. NEW Version V2323, released on 31 May 2023, FREE DOWNLOAD, WinRFCalc is the best Windows RF calculator toolbox for EMC, RF and Radio engineers. I am using the specified max VSWR. In his ATP he had the following formula to calculate the cascaded VSWR through the many switches to the front panel. Resistance Conversions. VSWR/Return loss converter Wavelength calculator Wilkinson splitter designer. |. 0 = 1. 5. VSWR Calculator. 0. Voltage standing wave ratio (VSWR) (pronounced "vizwar" [1] [2]) is the ratio of maximum to minimum voltage on a transmission line . 0 = 5. 5dBThis calculator converts between return loss (RL), voltage standing wave ration (VSWR), and reflection coefficient (Γ). D (mm) Er: d (mm) Impedance: Notes: *Optimal D/d ratio for breakdown voltage is. However, convention and some literature quote return loss as a negative value akin to an S (1,1) measurement on a Network. Studying the graphs, it is apparent that this simple circuit performs well over 20% bandwidth. He got it from a text book. 04 dB. 64% or ±10 x log10 (103. Learn about voltage standing wave ratio (VSWR), return loss, and mismatch loss, which helps characterize the wave reflections in a radio frequency (RF) design. Moreover, return loss is the relationship between both the reflection coefficient (Γ) and the. The Unknown Editor has been spouting off about a variety of topics since he started this site back in 2001. To specify reference impedances for each frequency in this case, specify Z0 as a 3-D vector of length 1-by-1-by-K. - Pi Attenuator Calculator. Both systems have a total of +30 dB gain. To use the calculator, enter the VSWR value for each of the assembly components being added. Shively Labs 3485 Orange Grove Ave Suite LHere's a video from ATT Bell Labs ' archives that explains wave behavior, using a "wave machine" developed by John N. For five t-line sections each having a VSWR of 1. The first major new release of RF Cafe's spreadsheet (Excel) based engineering and science calculator is now available: Espresso Engineering Workbook™. Wire over Ground Calculator. This VSWR calculator will calculate return loss, mismatch loss, loss in percentage and the reflection coefficient. 44. For cascade equations, see IP2 , IP3, and NF pages on RF Cafe. Here is a JavaScript calculator for. This impedance incongruity leads to the performance deterioration in active device parameters such as efficiency, gain etc. The concept behind the Smith Chart is simple. Thus, for this system, VSWR = 1:1 (i. Here is a JavaScript calculator for VSWR / Return Loss / Reflection Coefficient. 50:1, the resulting maximum VSWR will be 4. The formula for insertion loss in decibels (dB) is: Insertion Loss (dB) = 10 * log10 (Pin / Pout) Where: Pin is the input power or signal level. This is for ideal conditions: stated as VSWR=1. reflection coefficient definition. Shively Labs has been designing and manufacturing professional broadcast antennas since 1963 for installations around the globe. Expressed as 3. 05+j51. In the example below an attenuator is added between the input and amplifier to improve its return loss. In summary, return loss is the loss of signal power due to signal reflection or return by a discontinuity in a fiber-optic link or transmission line. The cascaded effects of the noise figures and losses of the components following the attenuator, including the LNA, will increase the noise figure considerably beyond 3 dB,. 50:1, with a corresponding return loss of 3. So, gamma. Using measurements of this nature is often termed. Forward Power (dBm)Conversions: nf = 10 NF/10 ↔ NF (dB) = 10 * log 10 (nf) where nf is a unitless ratio and NF has units of dB. **Note: All of our calculators allow SI prefix input. No:35/109 Golbasi Ankara/TURKEYConvenient for describing this distribution is the voltage standing wave ratio (VSWR), defined as the ratio of the maximum voltage amplitude to the minimum voltage amplitude. Return Loss (dB) VSWR Feet LDF4-50A VXL7-50 No No No No No No No No No No No Yes Yes No FSJ4-50B PRIVATE AND CONFIDENTIAL CommScope 90 Possible Cascaded VSWR Results If: L = 1. Return loss = 10 log (Pr / Pi) = 20 log (Er / Ei) For example, if a load has a return loss of -10 dB, then 1/10 of the incident power is reflected. Enter the Noise Figure & Gain for each stage to calculate the Cascaded value Select Number of Stages Stage 2 Stage 3 Stage 4 Stage 5 Stage 6 Stage 7 Stage 8 Stage 9 Stage 10 NF(dB)VSWR Explained. July 2021:This calculator comes from Ticer - thanks, guys! Download the TCR Resistor Calculator. 295+j32. 16-Feb-2022. |. It is very easy to construct. Enter values for R1 and R2 to calculate attenuator loss and impedance. If the transmission line, which could. 首页(放在最后了) 这个软件(工具集合)的不足之处. In general, a lower VSWR means a system and load is well matched with most of the power being radiated by the antenna and a relatively small amount reflected back into the system. In cases where optimum performance isWe can associate the first k stages of the cascaded two-port networks with plant P ∈ P p × m, and the remaining l − k stages with the controller C ∈ P m × p. From a system VSWR level calculate the following parameters: - Reflection coefficient. Reflected power ratio for system 1 is 0. Thus, the level of TO-8 input/output VSWR in cascaded amplifiers is mainly depen- dent on how well impedance levels of individual TO-8 amplifier ports match in relation to each other and the con-T Attenuator Calculator. VSWR (input) : Return Loss in dB (output): Return loss calculation EXAMPLE : VSWR = 1. Pasternack's RF Calculators and Conversions section provides engineers valuable and easy-to-use tools ranging from complex mathematical formulas to simple conversions. Complete Impedance Mismatch. Propagation time/distance Calculator For a given medium dielectric, calculate propagation distance for a set time and vice versa. Now, let us investigate the physical meaning of return loss. Enter a value for VSWR (remember: VSWR should be a number larger than 1. QFH antenna is one among various antennas used to capture images from low level non geosynchronous satellites. I have already calculated the cascaded VSWR and RL using the RSS method (very similar result to simply multiplying each components VSWR as Itay mentioned), but the problem is that the result is not even close to the measured value of return loss. 5) worst case if the reflected waves add in phase or a 1. N in is the noise level at the input, S out is the signal level at the output. 2 at 2380 MHz, the mismatch loss is calculated to be 0. Mixer Spur SearchLink Budget is a way of quantifying a communication link's performance while accounting for the system's power, gains, and losses for both the transmitter (Tx) and receiver (Rx). This RF/microwave system Cascade Analysis Calculator is an easy to use design analysis tool. VSWR Return Loss. Enter appropriate data See results in; dBm : dBw, Watts or microVolts. The online calculators are usable in pop-up mode for easy desktop. With this tool, the output frequencies of an RF mixer are calculated using the Henderson [see the Watkins Johnson application note written by Henderson available after the installation of WinRFCalc] model for spurious calculations. The table shows the effects of combining two components in terms of their maximum VSWR and return loss. 009 Mismatch Loss (dB). VSWR B = 2. The Effects of VSWR on Phase and Amplitude Errors. For a VSWR of 2, the mismatch loss is calculated to be 0. Resistivity. A common example is a power amplifier. Formula The reflection coefficient for each element is Γ = 10- (RL/20) The cascaded Return Loss is RL = −20*Log10 (√ (Γ12 + Γ22) Reflection coefficient can be. —and. Return Loss (dB) 3. *Strictly, a loss quantity when expressed in dB should be positive. VSWR is not a hard concept to grasp, but its effects on the instrumentation. 0:1, 2. I am using the specified max VSWR. Return Loss vs VSWR Calculator: The calculator calculates VSWR from return loss and return loss from VSWR. Power. - Pi Attenuator Calculator. As an example, if the return loss of the amplifier is 4 dB, use the calculator below. Offline. 0. 0:1 device with a 1. In industry, VSWR is sometimes pronounced "viz-wer". Following calculator can be used to convert VSWR to corresponding return loss (RL). Inherent in the cascaded assem- bly are parasitic inductive and capaci- tive reactances which tend to offset the 50-ohm transitions from stage-to-stage, especially at higher frequencies. is a VNA Calibration Kit with Frequency 220 to 325 GHz, Operating Temperature -20 to 30 Degree C, Return Loss 27 dB. Voltage Standing Wave Ratio (VSWR) is defined as the ratio of the maximum to the minimum voltage on a loss-less line. This can be built into a FLEXI-BOX and a transmission line (50 Ohm track) PCB is available which easily adapts for this circuit with one simple trimming. As a rule of thumb, the VSWR due to the interaction of 2 connected devices can vary between the product of the 2 VSWR's max and the quocient of the 2 VSWR's min. Resistor Values. VSWR (Voltage Standing Wave Ratio) is a measurement of how well matched a radio transmitter and transmission line is to a load such as an antenna. This general RF calculator provides path loss, VSWR and wavelength as well as conversions between many common measurements used in the wireless industry. such as the VSWR or the terminating impedance of a device under test (DUT). Return loss, also known as reflection loss, is a measure of the fraction of power that is not delivered by a source to a load. VSWR Calculator. Skin Depth Calculator. Use this calculator to calculate Receiver sensitivity ( Signal level to obtain a specified number of dB's Signal-to-Noise ratio SNR ) Set temperature in Fahrenheit, Celsius or Kelvin. More details for V10CAL Series can be seen below. Thus, gain for an active device gets deviated because of this mismatch which leads to unstable. Resonant Frequency Calculator. VSWR Calculator. It uses a bilinear Moebius transformation, projecting the complex impedance plane onto the complex Γ plane: Γ = Z −Z0 Z +Z0 with Z = R +jX (3) As can be seen in Fig. The calculator can also be used to find the value of VSWR using any of the other values. RLC Combinations: Parallel. Joined: Wed Aug 11, 2004 5:11 pm. Pincident watts. We will see S parameters ( scattering parameters) which include S11/S22 (Reflection coefficient),S12 (Isolation) and S21 (Insertion loss). VSWR is defined as the ratio of the maximum voltage to the minimum voltage in standing wave pattern along the length of a transmission line structure. VSWR (input) : Return Loss in dB (output): Return loss calculation EXAMPLE : VSWR = 1. Some popular calculations include the effect of VSWR or return loss on transmitted power; cascaded gain and noise figure for up to five amplifier stages; and power-to-voltage conversion. As an added bonus, the results are modifiable and can calculate the other values. Gain for uncompressed stages is a simple addition. 5 * 2. This impedance mismatch can be with a device inserted in the line or with the terminating load. Combining 2 Stages at a Time for Calculations. VSWR & Return Loss Calculator: Enter forward and reflected power or match to determine equivalent values. VSWR/Return loss converter Wavelength calculator. Wireless Converters and Calculators. Then, I use the RSS method to calculate an overall gamma for the system (I understand that this method is acceptable for an estimate of most cases) --. The noise figure is the difference in decibel (dB) between the noise output of the actual receiver to the noise output of an "ideal" receiver with the same overall gain and bandwidth when the receivers are connected to matched sources at the standard noise temperature T 0 (usually 290 K). Various types of impedance matching network architec-tures (2, 3, 4, or more element) are discussed in detail, and math-ematical approaches to matching network design, supported by two solved numerical examples, are presented. Simply select the tool that best suits your purpose. =Γ2 = 10−RL/10 = Γ 2 = 10 − R L / 10. Cascaded Noise Figure calculator Chebyshev filter designer Coplanar GB waveguide calculator C-Coupled Resonator designer. RF & Electronics Symbols for Visio. Resonators (λ/4-Wave Coaxial) Return Loss / VSWR / Gamma. g. Even though the effect of VSWR interactions between stages is not included when performing the calculations, the results are a good first order approximation of the cascaded performance of the system. Fortunately, Visual System Simulator (VSS) software in the AWR Design Environment platform has many measurements that assist in cascade analysis. VSWR/Return loss converter Wavelength calculator Wilkinson splitter designer. There is a resistive axis that is down the middle of the chart,VSWR Reduction by Matched Attenuator: By inserting a matched (nominal system impedance) attenuator in front of a mismatched load impedance, the mismatch "seen" at the input of the attenuator is improved by an amount equal to twice the value of attenuator. Now you're done with your resistors! The values should be R₁ = 76. The characterization of microwave networks requires discriminating between forward and backward traveling waves. VSWR/Return loss converter Wavelength calculator Wilkinson splitter designer. Voltage Measured Along a Transmission Line. ( 14 more products) Download Datasheet Request Quote. VSWR calculator is an online calculator is used to convert the values between the VSWR, return loss, reflection coefficient, and mismatch loss. The purpose of this application note is to review P 1dB and IP3 in general, and to compute these parameters for a basic, three-component. VNA Calibration Kit by OML Inc. Tags: Mechanical Calibration Kit. VSWR can be generated by Network Analysers. Here is a list of some of the calculators in this app: Attenuator Calculators. VSWR (voltage. This mix of web-based tools and downloadable Windows software was developed to help engineers design faster and more accurately. Objective. Cascaded Noise Figure Calculator Calculate the input referred noise figure for cascaded stages. The problem is multiple reflections - the power reflected from component 2 goes back into component 1 (which has a reverse return, s22) which reflected forwards again, adding to the prior, and then the the reverse transmitted through 1 hits the source Thevenin and reflects back forward adding additionally to the total forward and that is transmitted is dissipated in the source. Large selection of online interactive calculators for RF design, including attenuators, capacitance, resonance, RF traps, and microstrip impedance. The purpose of this application note is to review P 1dB and IP3 in general, and to compute these parameters for a basic, three-component RF front. Right-Hand Rule. We use an interpolation approach. I leave it to other sources to provide the complex equations needed to precisely model coaxial cables. Cascade analysis is a simple yet powerful tool for analyzing system performance. When a system is. You can choose different input formats from the drop down menu. Capacitor calculator; Cascaded amplifiers; Coaxial impedance; Reactance and resonance; VSWR Calculator; Wavelength and frequency calculator; Intermodulation calculators. Forward Power (W) Reverse Power (W) VSWR. Calculate VSWR from Forward and Reverse Power. The set of RF Budget (RFB) measurements within the Visual System Simulator (VSS) of the AWR Design Environment (AWRDE) is well suited for analyzing RF systems for items such as gain, noise figure, third-order intermodulation distortion, gain compression, etc. Infinity The normal way of expressing a VSWR is in terms of a ratio: 2:1, 5:1, etc and a perfect match is 1:1, and a complete mismatch, i. Coaxial Cable Calculator.