RF Receiver with Interference Rejection

Summary

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

 

Applications

 

  • 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.

 

Status

 

Provisional patent filed; available

 

 

Patent Information:
Tech ID:
OSU-17-27
Contact:
David Dickson
IP & Licensing Manager
Oregon State University
541-737-3450
david.dickson@oregonstate.edu
Inventors:
Arun Natarajan
Abhishek Agrawal
Keywords:
Network receiver
Spectrum capacity
Wireless communication
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