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## Even And Odd Mode |

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

I have problem in obtaining width **and** spacings of coupled lines from **even** **and** **odd** **mode** characteristic impedances.
What problem? Do you have a basic idea how to proceed?
Have you looked at transmission line calculators which calculate Z0e/Z0o from the physical dimensions?

RF, Microwave, Antennas and Optics :: 01-23-2012 17:28 :: volker_muehlhaus :: Replies: **5** :: Views: **1056**

I have simulated conductorbacked coplanar waveguide in CST. However I am getting only **odd** **mode** fields **and** not CPW **mode** ie **even** **mode**. Any Suggestions

Electromagnetic Design and Simulation :: 12-16-2011 11:30 :: Manisha Shete :: Replies: **0** :: Views: **1283**

Hello,
I'm currently designing a Patterned (w/ Slots) March**and** Balun to increase the **even**/**odd** Impedance Ratio for good balance.
LineCalc is able to simulate Zoe **and** Zoo given the width **and** spacing of a coupled lines but it assumes an infinite ground plane.
However, for the patterned ground plane, (...)

Electromagnetic Design and Simulation :: 11-30-2011 16:59 :: Blue_Electrons :: Replies: **2** :: Views: **2143**

name is Tia **and** I was in my final year **and** i having the difficulties in building microstrip hairpin filter for Ultra wide-b**and** application. i was at loss on how to obtain the filter dimension **and** spacing. at first, i had already followed the pozar **and** other several books **and** successfully (...)

RF, Microwave, Antennas and Optics :: 11-23-2011 15:36 :: tianoor :: Replies: **8** :: Views: **2109**

In an empirical way, you can slightly change the gap in the two coupled lines, **and** that will shift the resonances that depend mostly on **odd** **mode** excitation. You can then keep the gap constant, **and** change the line width of the two coupled lines, which will change the resonance of the **even** (...)

Electromagnetic Design and Simulation :: 09-03-2011 11:23 :: biff44 :: Replies: **4** :: Views: **2975**

hi
i m simulating a waveguide structure as a coupler. its a four port structure. i need to calculate **even** **and** **odd** **mode** propagation constant. i have used driven modal solution but it cannot calculate **even** **odd** **mode** beta. i have seen in some other threads that (...)

RF, Microwave, Antennas and Optics :: 02-08-2011 13:12 :: cftpm :: Replies: **2** :: Views: **2740**

you can not have negative **even** of **odd** **mode** impedances.

RF, Microwave, Antennas and Optics :: 01-28-2011 22:15 :: biff44 :: Replies: **3** :: Views: **1026**

I wrote my own MoM closed box code to solve symmetrical microstrip discontinuities. I use **even** (1,1) **and** **odd** (1,-1) **mode** excitation **and** extract the s-parameters from the result current distribution. I am trying to find our what excitation should be used **and** the corresponding s-parameter (...)

Electromagnetic Design and Simulation :: 11-20-2010 05:40 :: dave1313 :: Replies: **0** :: Views: **1226**

RF, Microwave, Antennas and Optics :: 11-15-2010 21:09 :: vfone :: Replies: **6** :: Views: **1698**

When you work with differential lines, **even** **and** **odd** **mode** impedance are real **and** relevant.

RF, Microwave, Antennas and Optics :: 11-07-2010 10:52 :: volker_muehlhaus :: Replies: **5** :: Views: **3251**

An **even**/**odd** **mode** velocity disparity, like you get in microstrip coupled structures, means literally that some of the energy will arrive at the output by one path, **and** some of the energy will arrive at the output by another path (in a mathematical superposition sort of way). There, the two will vectorially interact (add or (...)

RF, Microwave, Antennas and Optics :: 10-09-2010 19:04 :: biff44 :: Replies: **2** :: Views: **1811**

when two microstrip lines are coupled, they exhibit **even** **and** **odd** **mode**(please refer any basic microwave engineering book), each of these **mode**s result in separate impedances ,Zoe **and** Zoo such that Zo=√(Zoe.Zoo)=50 ohms(approx.)
Now you need to know these values to find coupling (...)

RF, Microwave, Antennas and Optics :: 07-11-2010 08:00 :: afz23 :: Replies: **2** :: Views: **1574**

I'm using HFSS for a specific coupled CPW line simulation.
Driven modal are used. Two waveports are places at both ends of the coupled CPW line **and** two **mode**s (**even** **mode** **and** **odd** **mode**) are excited at each waveport. However, at two ends of the coupled line, the simulated (...)

Electromagnetic Design and Simulation :: 03-05-2010 20:21 :: wizardz :: Replies: **0** :: Views: **1587**

Seems the HFSS 11 or 12 has some changes in result report.
In HFSS 10 or ealier version, I see the method to extract the **even** **and** **odd** **mode** impedances of couple-line as follows in the previous post.
(1) Choosing the driven terminal (not driven modal);
(2) draw two terminal lines when setting the waveports;
(3) after (...)

Electromagnetic Design and Simulation :: 02-04-2010 16:06 :: wizardz :: Replies: **1** :: Views: **4855**

Hi:
anybody here could show me how to get the **even** **and** **odd** **mode** impedance of coupled lines in momentum?
Thanks In Advance.

RF, Microwave, Antennas and Optics :: 01-23-2010 13:33 :: Julian18 :: Replies: **1** :: Views: **1552**

Hello, friends.
I would like to design a direction coupler at a center frequency of 2.6 GHz.
I prefer to simulate the strukture in the HFSS software. But i am not clear with the definition of the **even** **and** **odd** **mode** port definition.
Can anyone give me some suggestions or send me some examples?
Thanks a lot
:) (...)

Electromagnetic Design and Simulation :: 07-06-2009 07:36 :: SunGuolin :: Replies: **1** :: Views: **2164**

hi
what is the relationship between the single-ended, diff, **odd**, **even** impedances ?
i know Z_diff=2*Z_**odd**.
but Z_se= ???? is it equal to **even** **mode** impedance?
With the TNT MMTL program, I get **even** **and** **odd** **mode** impedances, not diff (...)

Electromagnetic Design and Simulation :: 06-30-2009 09:00 :: buenos :: Replies: **0** :: Views: **1447**

how to calculate **even** **and** **odd** **mode** effective dielectric contant from effective dielectric constant.plz specify equations if any.

RF, Microwave, Antennas and Optics :: 06-29-2009 06:37 :: umair67 :: Replies: **0** :: Views: **1028**

how can I implement the parity check on uart ?
i do know i can set to **even** or **odd** **mode** ... but where can I insert it ? how do i check number of **even** '1' **and** **odd** '1' ?
any vhdl code for parity check ?

ASIC Design Methodologies and Tools (Digital) :: 03-14-2009 16:45 :: ikki :: Replies: **2** :: Views: **4930**

Yendori is correct. When used as a power combiner, it depends on whether you are exciting an **odd** or **even** **mode** at both ports.
When exciting an **even** **mode**, both branches are perfectly in balance, no current will flow through the resistor **and** you get the sum of both powers at the input. (...)

RF, Microwave, Antennas and Optics :: 01-20-2009 07:40 :: radiohead :: Replies: **7** :: Views: **2284**