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pass band filter - RF Cafe Forums

Because of the high maintenance needed to monitor and filter spammers from the RF Cafe Forums, I decided that it would be best to just archive the pages to make all the good information posted in the past available for review. It is unfortunate that the scumbags of the world ruin an otherwise useful venue for people wanting to exchanged useful ideas and views. It seems that the more formal social media like Facebook pretty much dominate this kind of venue anymore anyway, so if you would like to post something on RF Cafe's Facebook page, please do.

Below are all of the forum threads, including all the responses to the original posts.


amimar
Post subject: pass band filter
Unread postPosted: Thu Apr 21, 2005 2:58 pm

Hi
I m looking fr a passband filter for thr marine band 156-162 MHz can someone help me please to find SMT component
Thanks


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Guest
Post subject:
Unread postPosted: Thu Apr 21, 2005 5:09 pm

Go to the following website: http://tonnesoftware.com/. There is a program called ELSIE, that you can use to design the filter you are looking for.


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Guest
Post subject:
Unread postPosted: Thu Apr 21, 2005 5:21 pm

Anonymous wrote:
Go to the following website: http://tonnesoftware.com/. There is a program called ELSIE, that you can use to design the filter you are looking for.


i need a componen i can by and inert into my design


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Guest
Post subject:
Unread postPosted: Fri Apr 22, 2005 8:27 am

Try the filter companies, but be ready to pay some big money since it will be a custom design. You be better off designing it yourself, it would only comprise of 5 surface mount parts at best.


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Guest
Post subject:
Unread postPosted: Fri Apr 22, 2005 11:57 am

Anonymous wrote:
Try the filter companies, but be ready to pay some big money since it will be a custom design. You be better off designing it yourself, it would only comprise of 5 surface mount parts at best.

i need to know if there is a componenets that make that i don t want to make a custom design


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Qacer
Post subject: Re: pass band filter
Unread postPosted: Tue Apr 26, 2005 9:37 pm
Offline
Captain

Joined: Sat Apr 23, 2005 2:09 pm
Posts: 17
Location: Tampa, FL
amimar wrote:
Hi
I m looking fr a passband filter for thr marine band 156-162 MHz can someone help me please to find SMT component
Thanks


You can always use DSPs. Have you actually tried searching on Digikey for such a part? If it's not there, you can always use Google. I found this filters site through it http://www.ana-tech.com/.


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Qacer
Post subject:
Unread postPosted: Tue Apr 26, 2005 9:40 pm
Offline
Captain

Joined: Sat Apr 23, 2005 2:09 pm
Posts: 17
Location: Tampa, FL
I take that DSP quote back. I don't know much about it, but I remember my friend telling me that the frequency that you can sample is only as good as the processor speed. I don't think they have fast enough DSPs that can sample a 100 MHz signal. Anyone can shed a light on this? Remember, I'm clueless with DSPs.


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RF Burns
Post subject:
Unread postPosted: Wed Apr 27, 2005 2:46 pm

Hi Amimar,
A bandpass filter at this frequency should be relatively simple to design. Once you have designed it and calculated the L and C values you need you should check the coil craft website for the inductors www.coilcraft.com. For the capacitors, try AVX (www.avx.com). Coil craft will probably supply you with a small quantity of free inductors. Upon finding the appropriate cap from AVX you may order it online from Radio Spares (rswww.com) etc. These components are reatily available.

Good luck



Posted  11/12/2012
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