Accession Number : AD1030440

Title :   Photonic-Enabled RF Canceller with Tunable Time-Delay Taps

Descriptive Note : Technical Report

Corporate Author : MIT Lincoln Laboratory Lexington United States

Personal Author(s) : Kolodziej,Kenneth E ; Perry,Bradley T ; Yegnanarayanan,Sivasubramaniam

Full Text :

Report Date : 05 Dec 2016

Pagination or Media Count : 4

Abstract : Future 5G wireless networks can benefit from the use of in-band full-duplex technologies that allow access to previously unused spectrum by suppressing consequential self-interference. While this interference mitigation is typically achieved using multiple techniques, existing RF cancellation schemes can limit a systems center frequency and instantaneous bandwidth. This paper introduces a unique RF canceller design that uses photonics and a vector modulator architecture to provide a high number of canceller taps with tunable time-delays, which allow the canceller to operate over wide bandwidths. A prototype of this concept was built, and successfully demonstrated the capability of tuning 20 canceller taps over 80 different delay locations that spanned 115 ns

Descriptors :   MOBILE COMMUNICATIONS , frequency bands , bandwidth , losses , measurement , modulation , carrier frequencies , optical circulators , low noise amplifiers , delay lines , attenuation , time domain , phase shift , photonics , cancellation , radio frequency , microwaves

Subject Categories : Radio Communications
      Fiber Optics and Integrated Optics

Distribution Statement : APPROVED FOR PUBLIC RELEASE