help:20-500MHz preamplifier

Hi anybody
I want to design a preamplifier with this specifications:
Range of frequency: 20-500MHz
Minimum Gain: 15dB
Maximum Ripple: 1.5dB
NF:The losser the better

Please help me.

Best regard
MSH

Hi.
Please explain more about your design.
such as the range of input power and 1 dB compression point of your desing.
can u use MMIC such as MAR and Era?
bests.

Minicircuits, Agilent, Macom, Sirenza modules are most probable good for you. And you need no design experience for these modules too.

Checkout these links:

http://www.pan-tex.net/usr/r/receivers/elrrfamp.htm
http://www.electronics-tutorials.com...amplifiers.htm
http://www.qrp.pops.net/preamp.htm

Minicircuits and others make IC amplifiers that will do this. If all you want is the amplifier and not the knowledge of how to design one from a transistor, this is the best and cheapest source. They sell the ICs and also packaged versions in metal boxes with coax connectors.

http://www.minicircuits.com/amplifie.html is where to start. Select the link that matches the type of amplifier you want.

They do sales to individuals using credit cards and have no minimum quantity to order.