RF Chip Selection for SDR Transceiver Design

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The discussion focuses on selecting an RF chip/module for an SDR transceiver that includes a power amplifier (PA), low-noise amplifier (LNA), and transmit/receive switch, specifically for 2.4GHz signals. The user is looking for a module that can interface with a DAC/ADC and perform conversion between baseband signals and radio frequencies without modulation or demodulation capabilities. Suggestions point towards Analog Devices, which offers a range of ISM band chips, although concerns about bandwidth and noise are raised. The user seeks clarification on the implications of using chips with larger bandwidths and whether filtering options are available. The conversation highlights the need for specific technical details that are not readily available online.
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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.
 
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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/
 
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?
 
fidel said:
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?
 
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.
 

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