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## Even And Odd Mode |

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even odd mode , odd mode , even and odd and mode and hfss , odd even mode hfss

73 Threads found on edaboard.com: **Even And Odd Mode**

In **even**/**odd** **mode** analysis. Some literatures usually use the concept
of "electrical wall" **and** "magnetic wall".
For "electrical wall", we might denote the ground plane where all electical field is
terminated in this plane?
Then, how about "magnetic wall"? How it establish its literal meaning with open a circuit plane? (...)

Electromagnetic Design and Simulation :: 11-01-2008 12:24 :: wizardz :: Replies: **1** :: Views: **1527**

How calculate **even** **and** **odd** **mode** impedances of coupled lines in CST.
I know that i must use multipin port **and** pretty sure that potentials defined correctly for **mode**s but i cant get a correct results...

RF, Microwave, Antennas and Optics :: 09-07-2008 20:48 :: bubuta77 :: Replies: **0** :: Views: **2155**

hi guys,
i wanted to design parallel coupled filter. i having trouble in calculating the width **and** the saparation between two strip line. Obtained:
Dielectric constant ,er= 2.55
Thickness, H=0.5inch
**even** **mode** impedance=82.53ohm
**odd** **mode** impedance =37.6ohm
appreciate your help. thanks

RF, Microwave, Antennas and Optics :: 09-07-2008 13:22 :: danesh :: Replies: **3** :: Views: **2269**

I had the same problem recently. I had some filters to design, had an old excel file that gave the correct Zoe **and** Zoo's, but when I got them I did not know what to do with them! None of my software takes **even**/**odd** **mode** impedances anymore!
There used to be a program called TLine that did this calculaton (impedance to (...)

RF, Microwave, Antennas and Optics :: 08-26-2008 14:23 :: biff44 :: Replies: **6** :: Views: **1971**

I want to know how to excite both the **even** **and** **odd** **mode**s in a normal coupled line structure, I want to calculate the effective wavelength for the **odd** **mode**.
Thanks in advance

Electromagnetic Design and Simulation :: 06-28-2008 13:13 :: felixero :: Replies: **0** :: Views: **1003**

Hello,
I am facing the following problem: Say that I have a system of N coupled transmission lines **and** I am simulating the system with an EM simulator. Based on the resulting S parameter matrix, how can I extract the Capacitance, Inductance, Resistance **and** Conductance matrices? Then, from these, how can I calculate the **even** (...)

Electromagnetic Design and Simulation :: 01-23-2008 05:08 :: nikogian :: Replies: **0** :: Views: **1693**

Hi everyone,
I am studying coupled microstrip lines right now. **and** I am confused by a questions. Do the energy of **even** **mode** **and** **odd** **mode** equal to each other when the V1=1v, V2=1v (voltage on each strip)for **even** **mode** **and** V1=1v, V2=-1v (...)

Electromagnetic Design and Simulation :: 12-16-2007 06:15 :: pudding :: Replies: **0** :: Views: **1408**

RF, Microwave, Antennas and Optics :: 12-01-2007 21:57 :: flatulent :: Replies: **8** :: Views: **7410**

Hi,
One can apply **even**-**odd** **mode** analysis to underst**and** the operation of Willkinson divider.
**even** **mode**: the middle point of resistor is open circuit **and** resistor is not contained in the circuit, so the **even** part is indeed losless. (...)

RF, Microwave, Antennas and Optics :: 10-27-2007 18:42 :: flyhigh :: Replies: **7** :: Views: **2091**

(1) Choosing the driven terminal (not driven modal);
(2) draw two terminal lines when setting the waveports;
(3) after simulation, you can get the differential impedance Zdiff **and** common impedance Zcomm. Then the **even** **mode** impedance Z**even** = 2*Zcomm, the **odd** **mode** impedance (...)

Electromagnetic Design and Simulation :: 10-19-2007 15:13 :: burton :: Replies: **6** :: Views: **4652**

Can anyone advise me if they have had luck in simulating the **odd** **and** **even** **mode** impedances of parallel coupled stripline ( with a top **and** bottom ground plane as per stripline). CST gives values that I dont completely trust.
Are there any open source programs that use the method described in R. R. Gupta (...)

Electromagnetic Design and Simulation :: 09-14-2007 14:22 :: maxwellian :: Replies: **6** :: Views: **4225**

width: about 3*(2g+s)
height:about (3-5)*h
**odd** **mode** **and** **even** **mode** can be excited, but it doesnot matter, only the results for **even** **mode** are needed.

Electromagnetic Design and Simulation :: 08-18-2007 03:46 :: burton :: Replies: **15** :: Views: **12617**

Dear all,
I have simulated a differential pair lines (GSSG). I selected driven-modal solution for a number of **mode**s of 2. From the E-field pattern, it is clear that **mode** 1 is **even** **mode**, **mode** 2 is **odd** **mode**.
Question: The Zo in the matrix data:
Zo **mode** (...)

Electromagnetic Design and Simulation :: 06-12-2007 13:47 :: wlcsp :: Replies: **1** :: Views: **4656**

Hi,
I want to calculate a line for LVDS **and** wondering about **odd** **and** **even** **mode** line impedances. IMO I have to trim the **odd** **mode** line impedance because the LVDS-signal is differential. But if I use the specified 100 ohm differential termination - do I have to have a (...)

Analog Circuit Design :: 06-08-2007 10:47 :: avt :: Replies: **0** :: Views: **1784**

Hi, everyone. I have a question about the differential pair definition in HFSS Driven Terminal simulation.
I am wondering is the Differential Terminal Port Impedance equal to the **odd** impedance **and** the common terminal port impedance equal to the **even** **mode** impedance in the couple line.
Actually, from the manual of the (...)

Electromagnetic Design and Simulation :: 03-01-2007 04:34 :: winglj :: Replies: **4** :: Views: **9995**

Helo Friends,
In coupled line filter harmonics occur because of the disparity of velocities in **even** **and** **odd** **mode**(**even** **mode** velocity is more **and** **odd** **mode** velocity is is written in books that to decrease the dismilarity in both (...)

Electromagnetic Design and Simulation :: 02-15-2007 17:13 :: Bibhu166 :: Replies: **0** :: Views: **908**

common **mode** signal have the same phase **and** amplitude(usually **even** harmonics)
differential signal which have 180 degree phase shift but have the same amplitude.(usually **odd** harmonics)

RF, Microwave, Antennas and Optics :: 12-20-2006 08:13 :: dingjingfeng :: Replies: **3** :: Views: **1043**

I am not good at coupled-line theory. So can anyone help me to underst**and** the following questions?
1) how to derive the equations 2a **and** 2b from 1a **and** 1b in this paper?
2) how to derive the **even** **mode** **and** **odd** **mode** circuits in Fig 7a (...)

RF, Microwave, Antennas and Optics :: 10-17-2006 01:37 :: zhangjavier :: Replies: **2** :: Views: **1195**

The integration line is the line where the E-field is integrated for obtaining Voltage. It decides the direction of E-field. For two-conductor system, the ingetration line should be from one conductor to another for **odd**-**mode** excitation **and** from conductor to ground for **even**-**mode** excitation.

Electromagnetic Design and Simulation :: 08-29-2006 00:05 :: burton :: Replies: **3** :: Views: **10071**

Does anyone know how I would prove **and** solve for the 4x4 s-parameter matrix using **even** **and** **odd** **mode** decomposition. Assume length is a quarter of a wavelength.
**and** how where can i find the derivations for a multi-section branchline coupler.
Thanks.

RF, Microwave, Antennas and Optics :: 04-03-2006 07:15 :: gmccolgan3 :: Replies: **1** :: Views: **2658**

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