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 : https://apps.dtic.mil/dtic/tr/fulltext/u2/1030440.pdf


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