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# Microwave Measurements

35 Threads found on edaboard.com: Microwave Measurements

## Wanted open-source code for dielectric measurements

i fully agree dave. While time goes on, some basic microwave problems, like converting S11 measurements into dielectric constant, never seem to show up on shareware! I too would love to see someone show, in simple language, how to do it. Sure, we can all download papers, research it, and throw it on matlab/excell and probably after a few weeks o

## Differential CPW Problem (CST MICROWAVE)

Dear All, I have imported a Differential trace into CST MWS, and I am using "Time Domain Solver" to get S-parameters and TDR measurements; the Problem is that we are getting wrong results.. we have used Polar software and the impedance is 100 Ohm differential.. but the TDR in CST MWS show a 3 Ohm impedance. I am new to CST MWS, it seems the C

## how to determine the dielectric constant of egg tray?

This paper discusses the dielectric constant in paper: As the dielectric constant is dependent of frequency, moisture content, and others. This paper explains the measurements that can be done at microwave.

## Measuring high resistance in the range from 10K ohms to 100 Giga ohms?

Electrical measurements of solid matter moisture content is a widely used method, of course with some variations depending on the application. Besides contact based measurements, capacitive or radio wave (e.g. microwave) absorption measurements are in use. I notice that you aware of the electrolysis problem, in fact most (...)

## coupled microstrip lines measurements

That's an interesting measurement what you are doing. Are you using the procedure described in Pozar's microwave Engineering book ?

Modelithics, Inc. - RF/microwave measurements and Modeling

## Looking for an article (microwave journal October 99)

Hi, I am looking for thi article from microwave journal J.J: Bouny "Impedance measurements for high power RF transistors using the TRL method" MW Journal october 1999. On the Journal website you can read articles down to 2003... Thanks and best regards. MWMM

## TRL de-embedding calculation

Pls refer to microwave engineering By D.Pozar.

## PIN diode square wave AM modulation

What is the aim of PIN diode square wave AM modulation in microwave measurements ?

## AWR Microwave Office Coupled Line Tutorial

Hi all, I'm looking for a tutorial on how to model a coupled line directional coupler (to be used as a phase shifter) in MWO. Anything (tutorial, basic steps to take, etc.) that you think would be helpful would be greatly appreciated!

i am new to microwave office, i am trying to make a simulation for a patch antenna, i drew 2 conducting rectangular plates separated by a dielectric, one is bigger than the other, the big one suppose to be th ground. and i drew a third small rectangular and set to be via the two layers, this should be the probe, and i checked the 3d diagram , it lo

## PCB Impedence - Why 50 Ohms???

50 Ohm is a industry standard for most of RF and microwave design and measurements. Because 50 Ohm is a compromise between 33 Ohm and 75 Ohm that theoritically gives you maximum power handling capability and minimum loss respectively. So, 50 Ohm is a optimum point between these two..

## RF microwave jobs, design & measuremets

Hi everyone, What to do after completing a PhD? Whether to seek a job in industry? I am in the area of RF microwave and passive components, R&D, measurements. 5 years expirience. What is the situation today in this field RF industry? Europe, USA? Country, salary, experience? Each experience is welcome. Thank you all.

## simulations of a patch antenna with Microwave Office

Hello, I was just started 3 months ago to use EMSIGHT of MWO 2008. I am doing a patch antenna working at 868 MHZ. I already did my EM structure and simulations about return loss, radiation pattern (PPC ETheta and PPC E Phi), smith chart but I need to know the gain of my antenna. How can I know gain of an antenna with MWO (not directivity, direct

## How to simulate ft/fmax in AWR(microwave office)?

Hello, guys I wanna see how ft/fmax changes with different Ic to choose best bias for device. How can I plot this curve in Microwavr Office? I used the transit time（TFF) to simulate ft： TFF=TF*{1+XTF*(if/(if+ITF))^2*exp(Vbc/(1.44*VTF))} and if is the ideal forward diffusion current，if=IS*(exp(Vbe/(NF*Vt))-1) Thenᦁ

## RF Simulations of MEMS Cantilever switch

Hello, AWR microwave Office (MWO) /APLAC has the MEMS model/element library such as the Capacitive switch with both physical & RF parameters & you can vary them just using the tuner & see the effect on RF measurements such as S-parameters, etc... See the attached picture file which shows more details... ---manju---

## extracting RF power transistor in/out impedance with Spice

Hello maniana, Yes, you can do Large Signal impedance measurements in AWR microwave Office & its simple... First import the spice model then create new schematic & add the Ideal Bias Tee's at input & output & bias using the source blocks... Finally add HB port at input & set the power in in dBm then add measurement such as Lssnm for inpu