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## Constant Propagation |

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propagation constant , propagation constant waveguide , back propagation , antenna and propagation

60 Threads found on edaboard.com: **Constant Propagation**

Hello.
I am trying to simulate a simple waveguide using wave port in both ends. All seems to work, but I get several warnings saying:
Discrete solution, process hf3d: Port Port1 supports an additional propagating and/or slowly decaying mode whose attenuation is xxxx and **propagation** **constant** is xxxx -- Simulating on machine: localhost

Electromagnetic Design and Simulation :: 01-18-2017 11:48 :: VegardMidt :: Replies: **0** :: Views: **2**

Yes, you would need to know those quantities, the process is known as "de-embedding" -- which is just multiplying by a factor of e^{-Gamma*d}, where Gamma is your **propagation** **constant** and d is the distance to be de-embedded.

RF, Microwave, Antennas and Optics :: 11-21-2016 15:32 :: PlanarMetamaterials :: Replies: **1** :: Views: **552**

The input impedance of transmission line is given by Zo*(1 + Γ*exp(-2*γ*l))/(1 - Γ*exp(-2*γ*l)). Where Γ is the reflection coefficient at the load end, l is the length of the line and γ is the **propagation** **constant**. For short circuit Γ is -1 and open cicuit Γ is 1. Thus geometric mean of sqrt(Zshort*Zopen) is

RF, Microwave, Antennas and Optics :: 10-28-2016 12:39 :: deba_fire :: Replies: **9** :: Views: **1214**

Hi all
I am in the first steps of using CST how which graph or from where could I read the **propagation** **constant** from the result
thanks

Electromagnetic Design and Simulation :: 11-25-2015 12:59 :: yasa111 :: Replies: **0** :: Views: **538**

Below follow a link the Microstrip N-Way Power Divider Calculator.
The microstrip wavelength, simply put, is the wavelength of the input signal as it is changed by the effective dielectric **constant** of the microstrip. This change-in-wavelength calculation is the same as it is in TEM (Transverse

RF, Microwave, Antennas and Optics :: 10-29-2015 12:04 :: Antoniopsjr :: Replies: **5** :: Views: **976**

Hello dear friends
I have a trouble to define "**propagation** **constant**" in the case of Grating..!
How should "**propagation** **constant**" be defined in port1,2 (Electromagnetic Waves, Frequency Domain) at COMSOL multiphysics? the file is attached
Please help me 😣119808

RF, Microwave, Antennas and Optics :: 07-31-2015 16:59 :: mrshahi :: Replies: **2** :: Views: **681**

Hi
i need a matlab code to plot "attachment" that figures "normalized **propagation** **constant**s" in fiber vs v111231

RF, Microwave, Antennas and Optics :: 11-11-2014 20:15 :: m_mohanes :: Replies: **0** :: Views: **1847**

De-embedding can definitely be done in HFSS (in post-processing, nonetheless).
In my understanding, de-embedding removes the effect of the **propagation** **constant** of your transmission-line over a certain distance. This will affect both magnitude (the decay **constant** alpha) and phase (the phase **constant** β).
Of course, (...)

RF, Microwave, Antennas and Optics :: 11-05-2014 16:39 :: PlanarMetamaterials :: Replies: **8** :: Views: **2887**

According to the transmission line theory, the characteristic impedance of the device Zo, **propagation** **constant** γ only should be related to the materials and the cross-sectional structure theoretically. And HFSS solve the 2D fields first, then solve 3D fields. For this, I want to ask three questions:
1 Choose ?solve ports only?, HFSS only cal

Electromagnetic Design and Simulation :: 04-16-2014 02:09 :: njzyfr :: Replies: **1** :: Views: **1265**

hi,i'm in the same problem.
plz help me...
thanks.

Electromagnetic Design and Simulation :: 09-08-2013 08:56 :: rhtk :: Replies: **1** :: Views: **1773**

Hi,
Does anybody have a code that calculates the **propagation** **constant** of a straight waveguide and a bending waveguide (two different codes)
Thank you in advance for your help
Best

Electromagnetic Design and Simulation :: 05-16-2013 13:25 :: alloucha :: Replies: **0** :: Views: **710**

You can get the propgation **constant** directly from HFSS by using waveport

RF, Microwave, Antennas and Optics :: 01-25-2013 23:28 :: burton :: Replies: **2** :: Views: **3424**

Please can anyone help with codes or how to compute **propagation** **constant** and chractersitics impedance of a transmission line using matlab

RF, Microwave, Antennas and Optics :: 11-16-2012 08:43 :: shegmitez :: Replies: **0** :: Views: **767**

Hi all
What exactly exchange for define, parameter verilog syntax on synthesis?
Also, what is **constant** **propagation**?

ASIC Design Methodologies and Tools (Digital) :: 09-18-2012 07:56 :: u24c02 :: Replies: **2** :: Views: **1974**

Hi all,
I am performing humidity measurement using the HS1101 sensor. The idea of measuring the humidity is charging anf decharging the sensor(capacitance). Please look at the link
As it is written in the link above, the solution is based on a timer which charges/decharges the cap

Analog Circuit Design :: 08-08-2012 04:22 :: lowpowermcu :: Replies: **1** :: Views: **929**

The analog AM receiver needs an automatic gain control (AGC) circuit to handle the large RF input variation due to radio wave **propagation**. In FM receivers the limiter provides **constant** envelope signal at input of demodulator. FM signals require more RF bandwidth to enable same base band bandwidth. So difference is in the demodulator, filters (

RF, Microwave, Antennas and Optics :: 04-28-2012 12:33 :: WimRFP :: Replies: **2** :: Views: **6581**

I am simulating a waveguide in HFSS having 2 ports( rectangular dielectric waveguide) .I want to ask what is real meaning of S(1,2) because in one case i am getting S(1,2) plot showing 5db gain while the **propagation** **constant** (beta) is equal to 0. Field overlay also shows wave dying much before even reaching port 2 then how to interprete S(1,2) val

Electromagnetic Design and Simulation :: 04-21-2012 19:15 :: bhvk.ameta :: Replies: **0** :: Views: **776**

Hi all,
Is there a way to plot the **propagation** **constant** (beta) against a certain frequency range in CST MWS?
When I do the simulation, I only get the **propagation** **constant** for the central frequency. I want this plot to be for a certain frequncy range and not just the central frequncy.
Thank you.

Electromagnetic Design and Simulation :: 03-06-2012 12:37 :: tmushie :: Replies: **0** :: Views: **2094**

Hi all,
1. I was wondering if anyone can help me on how to plot the **propagation** **constant** beta against frequency for a cylinrical dielectric waveguide that I constructed to CST MWS.
2. Also, I manually calculated the **propagation** **constant** of the dielectric wave guide and got a value of about 2.7 m^-1 at a frequency of (...)

Electromagnetic Design and Simulation :: 03-05-2012 16:55 :: tmushie :: Replies: **1** :: Views: **1770**

The time **constant** of the AGC is very long (.1 -5 seconds) as it only compensates for change in **propagation** amplitude, else it would remove the modulation of AM signals. For non carrier modulation such as SSB, the time **constant** will be even longer -30 secs?
Frank

RF, Microwave, Antennas and Optics :: 02-13-2012 20:10 :: chuckey :: Replies: **2** :: Views: **962**

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