rf amplifier
Hi allan681,
This can't be described in one or two words, because there are many
things open: which gain do you need, what noise figure is acceptable, ...
A good idea is that you take a look at the homepages of rf-device
manufacturers. This could be infineon, philips, agilent, ... They often have
application notes for their products.
Another possibility is to use a single-chip amplifier (e.g. ABA52563 from
Agilent, look at http://literature.agilent.com/litweb...988-9468EN.pdf)
this is much more easy if you are not as familar with building RF devices.
(change @ by a!)
Bye
Hi mr_ghz,
I want design this single-chip amplifier using replace @gilent's INA-02170/INA-03170.Can you give me some information how to design
this single-chip amplifier ?
Bye
As I saw that the bandwith is very wide. For a robust and consistent design
some important parameters must be carried out carefully Which are
- All-over band stability
- Minimum Noise figure Design (so , this kind of design may not give Min. NF and Gain or Reflection at the same time due to Min NF Gamma is generally differs from good reflection))
- Feedback ( series and parallel , at the same time ) is a MUST!
- IP3 behaviour ( this is also important for adjacent channels or disturbing signals )
I think transistor based designs are better or if you haven't time to design , CEL ( California Eastern Lab ) or more professional companies produce very low noise and very wide band amplifiers but they are quite expensive reagrding to application area ( military or commercial ) and performance.
But If I were you , I'd design with discretes .. since it becomes nice work for you.. :)
Good Luck
I think it difficult to design a match circuit in this too wideband .
one good choice is use some RFIC,not waste time and not very high price.
But LNA is often use in frontend ,why used it in
IF?
maybe a common broadband AMP is enough.
Hi allan681,
INA-02170 and INA-03170 both are obsolete parts. There exist many
replacement products from agilent. Most of them include an application
note with layout and measurements.
Bye
HI mr_ghz
Can you some replacement products for INA-02170 and INA-03170 ?
Bye
take a look at agilent web site
http://www.semiconductor.agilent.com.../home/home.jsp
you will find many
the is an EXAMPLE OF ANSOFT DESIGNER
ON THE ANSOFT OFFICIAL WEBSITE .
As I know ,you can simulate at ADS
before you do it .
I think it difficult to design a match circuit in this too wideband .
Befor you matching & simulation , you still need to get a chip or die .
@gilent got many MMIC , frequency from 0.1~6 GHz , only thing you need to do is add a inductor & resistor .
There are many many manufacturers of these types of amplifiers!
Why not check http://www.minicircuits.com/amplifie.html or look at
http://www.sirenza.com/products/prod...e=Gain%20Block
You should be able to find something that really fit your needs!
/WD
Form the view of the bandwidth, it is cifficult to complete the LNA with both NF and VSWR.
Can U tell the parameters U want in detail ?
NF, Gain, IP3, VSWR, etc.