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Tunable Bandpass filter 500~700MHz - RF Cafe Forums
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Post subject: Tunable Bandpass filter 500~700MHz
Posted: Mon Dec 21, 2009 2:57 pm
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Joined: Mon May 04, 2009
6:47 pm
Posts: 22 |
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I'm looking for tunable RF bandpass filters for
a 500MHz~700MHz radio. Besides K&L, is there
any other vendors making this? Thanks.
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Alberto |
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Post subject: Re: Tunable Bandpass filter 500~700MHz
Posted: Wed Dec 23, 2009 6:25 pm
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Joined: Sun Oct 04, 2009
5:17 pm
Posts: 6 |
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I think you can have a look at the pole-zero and
ewings products.
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lna |
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Post subject: Re: Tunable Bandpass filter 500~700MHz
Posted: Tue Jan 05, 2010 1:12 pm
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Joined: Mon May 04, 2009
6:47 pm
Posts: 22 |
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Looks like Pole Zero 's products are for frequency
hopping radio. Not sure about its price I believe
it's quite high and not necessarily for my project.
Can you give details of Ewings? Googled unsucessful.
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abhityagi85 |
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Post subject: Re: Tunable Bandpass filter 500~700MHz
Posted: Thu Jan 14, 2010 3:05 am
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Joined: Thu Jan 14, 2010
2:57 am
Posts: 4 |
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you can design yourself a good filter using mems
or using pin diodes.
Why 2 waste money, just
do sm rnd
even ieee papers already have mentioned
some filters but i remember their insertion loss
wass abt 2 db.
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karthik |
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Post subject: Re: Tunable Bandpass filter 500~700MHz
Posted: Sat Jan 16, 2010 2:24 pm
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Joined: Tue Apr 11, 2006
8:13 pm
Posts: 34 |
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You can check Lorch microwave or Lark Engineering
as well
karthik
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fred47 |
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Post subject: Re: Tunable Bandpass filter 500~700MHz
Posted: Fri Jan 22, 2010 11:28 pm
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Joined: Wed Feb 22, 2006
3:51 pm
Posts: 104 |
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What sort of specifications do you need?
Passband Bandwidth
Stopband Bandwidth
Passband
ripple
Stopband attenuation
Tuning speed
Noise level
Power level
would all be important.
Good Luck!
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abhityagi85 |
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Post subject: Re: Tunable Bandpass filter 500~700MHz
Posted: Tue Jul 13, 2010 3:15 pm
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Joined: Thu Jan 14, 2010
2:57 am
Posts: 4 |
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there are a lot of good papers for tunable filters.
the range and bandwidth you mentioned is esily covered
by a lot of papers. try searching at least ieee.
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Posted 11/12/2012
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