Photonics-Based RF Signal Phase Detector With Wide Operating Frequency Range and High Resolution

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2 Citations (Scopus)

Abstract

A new topology that generates a DC voltage whose value is depending on the phase difference of two input RF signals is presented. It is implemented by the mixer concept. With the use of microwave photonics, the mixer-based phase detector can be operated over a very wide frequency range. It also has the advantages of high phase detection resolution, small phase detection error, and small DC offset and phase offset. The phase detector can be constructed using off-the-shelf components including a single integrated optical modulator and a low-speed balanced detector. Measured results on the phase detector demonstrate a 0 to 180 RF signal phase difference detection range for 3.5 GHz to 18 GHz input RF signal frequencies, less than 3 phase detection error and 2 phase detection resolution.

Original languageEnglish
Pages (from-to)1-9
Number of pages9
JournalIEEE Photonics Journal
Volume13
Issue number2
DOIs
Publication statusPublished - Apr 2021

Bibliographical note

Publisher Copyright:
CCBY

Copyright:
Copyright 2021 Elsevier B.V., All rights reserved.

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