Broadband re-configurable RF receiver

摘要

An RF receiver system operating on a broader frequency range and wide input dynamic power range is described. Received RF signal is downconverted to baseband signal using multiple quadrature demodulators. A microcontroller system controls the RF receiver by selecting frequency range to be produced by the frequency synthesizer, selecting appropriate amplification path for producing the required output power, controlling the power module for checking for automatic power gain and automatic gain control.

主权项

1. A re-configurable broadband radio frequency receiver system operating on a broad frequency range and a wide input power range comprising:
a broadband local oscillator with multiple frequency selection paths for generating and re-configuring at least a radio frequency signal, wherein said broadband local oscillator is configured to downconvert said radio frequency signal using at least a first quadrature demodulator to produce at least an intermediate frequency; a fixed frequency local oscillator for generating a fixed local oscillator signal, wherein said fixed frequency local oscillator is configured to downconvert said intermediate frequency using at least a second quadrature demodulator to generate at least a baseband signal; at least a microcontroller configured to provide at least an amplification path selection and digital variable attenuator settings for reconfiguring said radio frequency receiver system to desired input power; multiple power detection sections for precise detection and configuration of said desired input power of said radio frequency receiver system; a radio frequency power detection section for automatic gain control of said radio frequency receiver system; and a reference frequency section for providing at least a reference frequency to at least a frequency synthesizer, said frequency synthesizer, configured to generate at least a local oscillator frequency.