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Microstrip parallel‐line coupler to perform broadband optically controlled phase‐shifting
Author(s) -
El Khaldi M.,
Podevin F.,
Vilcot A.
Publication year - 2005
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.21232
Subject(s) - broadband , phase shift module , microwave , microstrip , materials science , phase (matter) , optoelectronics , optics , line (geometry) , telecommunications , electrical engineering , engineering , physics , geometry , mathematics , quantum mechanics
This paper presents an optically controlled broadband phase‐shifter using a parallel‐line coupler, that takes advantage of high‐resistivity silicon photo‐absorption at 840 nm. A continuously variable phase‐shifting of 120° is achieved at 11 GHz with Δ| S 21 | < 5 dB and with | S 11 | < −15 dB in a large frequency band (6–15 GHz). © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 570–573, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21232