Questions tagged [scattering]
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13 questions
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Available Power Gain Formula
I was going through David Pozar book "Microwave Engineering, 4th Edition" on page 561, Two-ports power gains, i was redoing the calculation for \$ G_A = \frac{P_{avn}}{P_{avs}} \$ i have a ...
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scattering matrix of a dipole
Consider the following dipole:
I want to calculate the s-matrix of this circuit:
i think it is \$ b = S a \iff S = \frac{b}{a} = \frac{z_L - 1}{z_L +1}\$ with \$ z_L = \frac{Z_L}{Z_o} \$
But ...
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Can transceivers count to fifty resonators? [duplicate]
I asked a since-closed question yesterday about an alternative to RFID. I assumed the way to phrase the question was as the most general possible engineering problem. I infer that it is probably ...
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Direct ABCD matrix calculation from incident and reflected currents and voltages (i.e. obtained by 2 port FDTD simulation results)
Usual method for transmission (ABCD) matrix construction, from 2 ports EM simulation results, is to first calculate S parameters for each port i.e.:
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Antenna impedance (one port network), represented as ABCD (transfer) matrix?
I guess that ABCD matrices are not intended for one port, but, in this case, for the purpose of cascading two networks, 2 port (impedance transformer) and 1 port (antenna), by ABCD matrix ...
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Calculation of scattering parameter
I am not able to calculate the scattering matrix of a pi-circuit although I have calculated its Y matrix. The needed scattering matrix is referred to 50Ω.
Could someone help me on calculating the ...
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Do scattering parameters change with velocity?
I'm using the HFSS SBR+ solution type. I have one PEC sphere and two parametric beam antennas. I am trying to find out how much S parameters change with the Doppler effect.
Configuration:
...
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Avoiding thermal noise to enter low temperature while not using dissipative element
Let's assume that we want to interact with a circuit at very low temperature \$T2\$ to avoid any source of noise. The voltage interacting with this circuit must have a specific target value \$V0\$. ...
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Scattering matrix in microwave amplifier
What exactly is the scattering matrix in a microwave amplifier. I tried to deduce from lectures what it is used for in a microwave amplifier, but all I found were the formulas corresponding to the ...
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Is RF propagation path loss symmetrical and independent of clutter location?
Scenario: Consider two measurement points, point one is about 3m above ground level within a cluster of buildings (such as within an office park), and point two is about 1km away with an elevation ...
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How is Wilkinson power divider lossy?
In an ideal Wilkinson power divider(because in practical there will always be resistive loss), the scattering parameters, or S matrix is given as:
From the condition that checks if network is loss-...
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Power waves and scattering matrix
I have some doubts about the concept of power waves used in the description of the scattering matrix of an N-port component. In particular, I was wondering what is the most general and correct ...
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Measurement of s11 with reduced power on NanoVNA
I am developing a 10.7 MHz IF amplifier for a radio receiver. In order to match the input to the output of the driving mixer stage (330 ohm) I need to measure the input impedance.
I did the ...
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