LIGO demodulator:
https://dcc.ligo.org/public/0008/T1000044/002/IQ_Demod_v2.pdf

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LIGO documents:
https://dcc.ligo.org/

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RF products:
www.peregrine-semi.com

Mosfet quad Array and mixer core:
Extend the reach of your base stations with Peregrine's
MOSFET Quad Array for receive mixer applications. High
linearity and remarkable input IP3 performance will isolate
signals in even the most crowded spectrum.

http://www.peregrine-semi.com/content/techsupport/tech_library.html
choose:  PE4140