RF Receiver with Interference Rejection


Technology Description


This technology provides a scalable and reconfigurable receiver architecture for receiving code modulated signals at the receiver. Multiple switches operate at RF frequency, creating a n-path receiver that selects desired code for reception while rejecting others. This can improve performance of a receiver by enabling it to tolerate higher power interferers.


Features & Benefits


  • Reduced interference
  • Reduced power consumption
  • Improved spectrum utilization




  • Wireless networks
  • Maritime vessels
  • Defense and security


Background of Invention


RF communication at moderate frequencies (MHz to a few GHz) has a problem of undesired transmitter signals interfering with desired receiver signals in overlapping frequency ranges. This is especially problematic with many users utilizing a wireless network with limited bandwidth. Emerging 5G applications rely on dense spectrum reuse to increase network capacity, leading to increased in-band or co-channel interference. Digital beamforming (DBF) in phased/MIMO arrays which enable spatial filtering is desirable for reconfigurable, concurrent multiple beams. However, the absence of analog spatial filtering results in high ADC dynamic range requirements to tolerate ci-co-channel interference/jammers. This has led to interest in development of notched-arrays with spatio-spectral notching of jammers/interferers in RF/analog prior to the ADC and DBF.




Provisional patent filed; available



Patent Information:
Tech ID:
David Dickson
IP & Licensing Manager
Oregon State University
Arun Natarajan
Abhishek Agrawal
Network receiver
Spectrum capacity
Wireless communication
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