2.5GHz RF Bandpass Filter Design

[bowen_zhang]

femptofarad

Help!

Design a rf bandpass filter:

Passband 2450 ~ 2460MHz

Stopband <=2435MHz or >=2485MHz

stopband rejection >=30dB

dimension 10mm * 10mm * 5mm

Could someone give me any suggestion about how to realize it?

Thanks!

 

[Manjunatha_hv]

Hello,

Use Nuhertz Filter Synthesis Software to design & simulate your BPF

**broken link removed**
**broken link removed**


Filter Free 5.1 ftp://ftp.nuhertz.com/filter/FF5_1.exe &&


---manju---

 

[biff44]

Suggestions:

1) relax your stopband frequency edges

or

2) Take up drinking

 

[melc]

Usualy at this frequency (WIFI) there are ready made SAW filters. If you are a student, then try to see how looks those frequency-amplitude responses on manufacturer webpages: Murata, Epcos, Soshin, etc.
If you need to design just theoreticaly your own filter, using passive LC components, you're in trouble.

Added after 2 hours 6 minutes:

Hello,

Use Nuhertz Filter Synthesis Software to design & simulate your BPF

h**p://www.nuhertz.com/filter
h**p://www.nuhertz.com/download.html


Filter Free 5.1 ftp://ftp.nuhertz.com/filter/FF5_1.exe &&


---manju---

Unfortunately this free software is not very usefull as long will compute capacitors in femptofarad and inductances in microfarads for a 2.4Ghz band pass filter...
Do I miss something ?
I think a better option is Elsie:
http://www.tonnesoftware.com/elsie.html

greetings