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how to design 0.01-1GHz low noise amplifier?

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allan681

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rf amplifier

how to design 0.01-1GHz low noise amplifier?
 

mr_ghz

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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 **broken link removed**)
this is much more easy if you are not as familar with building RF devices.

(change @ by a!)

Bye
 

allan681

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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
 

BigBoss

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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 .. :idea: since it becomes nice work for you.. :)

Good Luck
 

jupitorcuu

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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.
 

mr_ghz

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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
 

allan681

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HI mr_ghz
Can you some replacement products for INA-02170 and INA-03170 ?
Bye
 

dragonlea

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the is an EXAMPLE OF ANSOFT DESIGNER
ON THE ANSOFT OFFICIAL WEBSITE .
 

chb8795412

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As I know ,you can simulate at ADS
before you do it .
 

alongsh

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I think it difficult to design a match circuit in this too wideband .
 

TQSU

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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 .
 

webdog

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There are many many manufacturers of these types of amplifiers!
Why not check http://www.minicircuits.com/amplifie.html or look at
**broken link removed**

You should be able to find something that really fit your needs!

/WD
 

yellowtooth

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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.
 

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