Questions tagged [s-parameters]

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Material for Scattering parameters or S-parameters

I'm needing a good indication of material for Scattering parameters or S-parameters, with exercises. It have been so difficulty to me to find it out, and I need help from your.
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42 views

S21 phase vs phase shift measure

Hi am simulating in ADS microstrip T-lines for a 3 bit phase shifter, the lines are calculated to insert 55,110 and 220 phase shift for 2.16Ghz. With the S-Parameter simulation i can see the phase of ...
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21 views

Measure antenna S11 next to another source

I have a dipole antenna designed to work on ~800MHz and 2.44GHz frequency, and a miniVNA Tiny USB device that I can use to measure return loss of the antenna. I connect the antenna directly to the DUT ...
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Unitary property of scattering matrix

From s-parameter lossless network definition , The sum of the incident powers at all ports is equal to the sum of the reflected powers at all ports. But how do we derive the above unitary property ...
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202 views

How to convert from S-parameters to power gain?

With reference to the part below, which states 17dB gain at 500MHz for Vce = 12.5V https://www.digikey.co.uk/product-detail/en/stmicroelectronics/PD55003TR-E/PD55003TR-E-ND/1664253 It's data sheet ...
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How do I convert S-parameters for impedance matching?

How do I derive the Z-parameters to calculate a matching network for a device? I'm not sure what terms to even search for as I get all sorts of information I am not familiar with. My task is to ...
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38 views

3-phase inductance calculation homework

This is a homework question where i am stuck. Please help me out in this: Three similar impedances are connected in star across 2000 V, 50 Hz three phase supply. Power absorbed is 300 kW. ...
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32 views

S parameter files in ADS Keysight

I have two different .s2p files of a diode, one for when it is on (5V and 1mA) and one for when it is off (0V). I can create a model of a diode for each of these two occasions, but I can't have them ...
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39 views

Can I get the S21 parameter from a one-port open, short and load reading?

I am currently working with a custom rectangular waveguide, which has one port abled to connect to a VNA,(call it port a) but the other side cannot, (its part of a bigger system but for now its only ...
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34 views

Can a Unilateral Amplifier be Unstable?

When designing microwave amplifiers, stability is an important factor to consider. Stability is usually measured with the K factor. In a unilateral network, S_12 = 0, and this makes the K factor ...
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28 views

Can I determine 2-port s-parameters from 1-port measurements?

I have a 1-port impedance bridge. Can I get the four s-parameters of a 2-port device by measuring each "sending" port with the "receiving" port terminated in Z0 and reversing the measurement to get ...
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90 views

Question on Matched 3dB attenuator

For the second picture below, how to derive the expression for Vo ? I suppose there is some in-betwen maths that I missed out. Note: 41.44 ohm is the parallel equivalent for (50 ohm + 8.56 ohm) || ...
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61 views

Z parameters to Input and Output Impedance Conversion Question

I have to design a matching network for BGA7027 at approximately 870 MHz. My understanding goes that I should convert the S-parameters given in the datasheet to Z-parameters, from which I find Zin and ...
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44 views

s-parameter matrix analysis

So I'm trying to figure out how I can analyze S-parameter matrices. The i. should be pretty straightforward, though I'm not 100% sure if I am correct with what it means. I'm assuming that there's ...
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52 views

Connect 3-port and 1-port devices defined by S-matrices

There are two linear networks. The first is defined by 3-port S-matrix: \$\mathrm{S}_\mathrm{A} = \left[ \begin{array}{lll} s_{11} & s_{12} & s_{13} \\ s_{21} & s_{22} & s_{23} \\...
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Are h- and g-parameters only applicable to two-port networks?

There are plenty of references to various ways to represent two-port networks (S, Z, Y, T, ABCD, h and g parameters). S and T parameters are commonly generalised to N-port networks. Is the same true ...