Help me with a 8-12GHz BPF design

Status
Not open for further replies.
S

STD

Member level 4
Joined
Dec 10, 2003
Messages
76
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,286
Activity points
649
8-12GHz BPF Design



Hello all,

I need to design this filter:
passband:8-12G,RL<3dB,rip<2dB;
stopband:16-24,attenuation<-40dBc
I have tried some times with microstrip structure,but performance in stopband is poor.
Can you give me some advice?Thanks very much!
 

Anybody has worked out similar filter?
 

Re: 8-12GHz BPF Design

I didn't work on similar filter, but did you try eliptic response? Microstrip filter is a very wide description on what you have tried! By the way, there is a very good book available for download at Elektroda,

Hong, Lancaster: Microstrip Filters for RF/Microwave Applications

flyhigh
 

Re: 8-12GHz BPF Design

The BW is 40 % of CF.

Try cascading a LP and HP filter. An isolation amplifier between them might be necessary.
 

flyhigh:Thank you for your information.
GaAs FET:You suggestion is very good!

I have change my design.I deside to replace the BPF by a LPF!
And mwo simulation results is just ok!
I will make board to check its real performance!
 

flyhigh,

pls tell me the path of that book on this web.
I failed to find it!
 

Re: 8-12GHz BPF Design

I suggest you use interdigital filter.
It can has a bandwith of 40%.
And you can add a LP filter after it .





Good Luck.
 

STD said:
flyhigh,

pls tell me the path of that book on this web.
I failed to find it!
Click to expand...

You can use: G.Matthaei,L.Young "Microwave filters, impedance-matching networks, and coupling structures". The book is in the attachment module.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…