Broadband re-configurable RF receiver
AssigneeHCL Technologies Limited
InventorsKameswara Rao Balijapalli, Ravi Kishore, Kumaralingam Ramamoorthy
Life of this patent
Estimating the term…
Abstract
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.
Claims50
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.
A method for operating on a broad frequency range and providing a wide input power range in an RF receiver, said method comprising:
- generating and re-configuring at least a radio frequency signal, using at least a broadband local oscillator with multiple frequency paths, wherein said broadband local oscillator is configured to downconvert said radio frequency signal using at least a first quadrature demodulator, wherein said downconversion is configured to generate at least an intermediate frequency;
- generating a fixed frequency signal using a fixed frequency local oscillator, wherein said fixed frequency local oscillator is configured to downconvert said intermediate frequency using at least a second quadrature demodulator to generate a least a baseband signal;
- providing at least selection of amplification path and digital variable attenuators settings for reconfiguring said radio frequency receiver system to a desired input power, by at least a microcontroller;
- detecting power for automatic power control, by multiple power detection sections and automatic gain control using a radio frequency power detection module for said radio frequency receiver system;
- providing reference frequency to said frequency synthesiser using a reference frequency section;
- and
- generating at least a local oscillator frequency, using said frequency synthesizer.
Dependencies are inferred from the claim text.