RF Chip Selection for SDR Transceiver Design

[fidel]

Hi all. I'm designing an SDR transceiver. I need a RF chip/module that at least contains PA, LNA and Tx/Rx switch. It should perform conversion between analog or digital baseband/IF signal and 2.4GHz radio signal. Modulation/demodulation will not be done in this chip. The radio signal is sent/received to/from an antenna.

In short, I want the RF module in the figure below only. DAC/ADC can also be included inside:

Antenna <--> RF Module <--> DAC/ADC <--> Baseband processing <--> ...
-------------------------

I've searched a lot but only seen some wifi/bluetooth/zigbee chip sets that indlude modem also...

Do you have suggestion for such chips? Thank you.

 

[berkeman]

Have you looked at the various chips made by Analog Devices? They have a pretty good assortment of ISM band chips and building blocks:

http://www.analog.com/

 

[fidel]

3x. I just found some from adi. The bandwidth they support is larger than what I desire. Will it cause trouble except that higher bandwidth will let more noise in?

 

[berkeman]

3x. I just found some from adi. The bandwidth they support is larger than what I desire. Will it cause trouble except that higher bandwidth will let more noise in?

Which bandwidth? Are there any filtering options?

 

[fidel]

I guess it's the signal BW after modulation, but not sure. I'm requesting more information which is not presented on the web pages.