Dear Hamid, A strategy to go with multiplexer consists in the separate tuning of each filter to the ideal response given by the synthesis process. This can be...
fabseyfert
fabseyfert@...
Oct 2, 2006 12:07 pm
1495
Dear Fabien, What is the ideal response of a filter meant to be part of a multiplexer ? Are you talking about singly terminated networks? I had the impression...
salehi_h
salehi_h@...
Oct 2, 2006 1:31 pm
1496
Dear Hamid, Suppose that a nice Wizard gives you a perfectly tuned multiplexer, with respect to channels isolation etc...If you now unplug a filter from the...
fabseyfert
fabseyfert@...
Oct 3, 2006 10:57 am
1497
Sir, I'm an Engineer working at Space Applications Center, Ahmedabad. We have designed filters and a Diplexer in Ka-band. In all the Ka-band filters and ...
ramagiri santhosh kumar
santhoshr@...
Oct 3, 2006 11:02 am
1498
The paper "Microwave Filter Loss Mechanisms and Effects" , MTT Transactions, Vol MTT-30, No.9, Sept 1982, pp 1330-1334, might explain the phenomenon you are...
Herbert Thal
hthal@...
Oct 3, 2006 2:31 pm
1499
Sir, I'm an Engineer working at Space Applications Center, Ahmedabad. We have designed filters and a Diplexer in Ka-band. In all the Ka-band filters and ...
ramagiri santhosh kumar
santhoshr@...
Oct 3, 2006 2:53 pm
1500
Dear Experts, I have some questions about the coupling coefficient in the synthesis of microwave filter. for example f0=2.593GHz BW=194MHz RL=25dB n=6 I tried...
Dear Junghak There is actually nothing wrong in what you have done. In coupled- resonator networks, what is important is to keep the coupling coefficient kij...
Dear Cameron I appreciate for your feedback. but I have still problem. I tried extract coupling L and shunt L value using the LLL inverter with previous two...
Dear Experts, When I plot the S-parameter from the coupling matrix, Could I put the unloaded Q into the plot? If it is impossible, is there any other methode...
Dear All, In a patent of dielectric cavity filter (US Patent 5936490), there talked about trisections. One topology contains three dielectric cavity(TE01d...
amicloudly
amicloudly@...
Oct 17, 2006 10:46 am
1505
These topologies are impossible. Possibly schematics and plots are swapped by mistake. Nevzat Yildirim ... From: amicloudly To: mtt-8@yahoogroups.com Sent:...
Dear All, We tune filters basing on S21(dB) and S11(dB),until response reach the requirements. But I heard that there is a tuning method based on phase. I dont...
amicloudly
amicloudly@...
Oct 18, 2006 10:56 am
1507
... Dear Liu Yun, As I know, In the trisection, if the topology is CTL(Cascaded Triplet L coupling), the transmission zero locates in left side. And If the...
Hi,Junghak, Thanks for your response. I also think the dominant coupling is capacitive coupling,comparing the field plots of comline case and dielectric caivty...
amicloudly
amicloudly@...
Oct 19, 2006 11:07 am
1509
There is a 1998 MTT paper by Ness on tuning filters with group delay. Perhaps this is what you are after. ============================================= A...
ddawson377
ddawson377@...
Oct 19, 2006 8:30 pm
1510
Dear all, Does anyone know a good source on how to calculate the power handling of combline filters? and how a commercial software can be used to get a more...
salehi_h
salehi_h@...
Oct 23, 2006 6:40 pm
1511
I think that perhaps Dr. Chi Wang is a good reference for this question. You might want to write to him directly. Dick Snyder ... -- Dr. Richard V. Snyder ...
Hamid, You can look at this paper first on power handling calculation using combined coupling matrix and resonator peak field vs. stored energy. Analysis of...
Chi Wang
wang.chi@...
Oct 23, 2006 7:09 pm
1513
Dear experts Iam designing a rotary joint based on the configuration Proposed by Boronsky.It consist of 3 E plane rings.( the center one, closed ) coaxially...
jithshere
jidesh@...
Nov 3, 2006 11:58 am
1514
I will be out of the office starting 10/30/2006 and will not return until 11/10/2006. ... Notice: This e-mail is intended solely for use of the individual or...
Chi Wang
wang.chi@...
Nov 3, 2006 1:44 pm
1515
Just as one suggestion: have you gone through the design of rotary couplers as described in the RadLab book by Ragan: "Microwave Transmission Circuits"? In...
Dear Experts, I'd like to extract Qu and resonance frequency for two cases. One is general combline type. It has resonator post and screw with square cavity. ...
Dear Experts, I found the coupling screws cant tune the coupling value too much. In fact in my design of a filter with freq range 1900-1910MHz, the M4 screw...
amicloudly
amicloudly@...
Nov 17, 2006 11:55 am
1518
... What is the bandwidth of your filter? In what range do you expect to tune it? Rather than screw size, I'd suggest looking at its placement. We need to...
(no author)
(no email address)
Nov 17, 2006 7:20 pm
1519
Dear Sirs I had designed a Tchebyscheff response of cavity combline filter several days before. The lengths of resonator rods are selected at 50.6 deg . ...
Hi,Tom, My passband is 1900-1910MHz, I used TE10d mode with material eps 45. the coupling structure is just iris window, just like common combline filters. I...
amicloudly
amicloudly@...
Nov 24, 2006 3:53 am
1521
Dear Experts, I would like to extract the lumped element value from coupling coeficient of coupled resonator filter. Does anybody who know the way of...
hello dear expert. I try to design an evanescent mode filter, and I found differents paper about these kinds of filters and I would like to know something. I...
romain_sevestre
romain_sevestre@...
Dec 4, 2006 1:01 pm
1523
A good starting point is the book,"Evanescent Mode Microwave Components", by Goerge Craven and Richard Skedd. This is an Artech House, Inc. publiciation, ISBN...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
