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X ‐band antenna mixers based on striped patch antennas excited by folded slots
Author(s) -
Luxey C.,
Kossiavas G.,
Laheurte J.M.
Publication year - 1999
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/(sici)1098-2760(19990305)20:5<333::aid-mop15>3.0.co;2-p
Subject(s) - balun , slot antenna , sideband , coplanar waveguide , antenna (radio) , microwave , rectenna , optoelectronics , electrical engineering , schottky diode , patch antenna , radio frequency , compatible sideband transmission , diode , feed line , engineering , microstrip antenna , materials science , physics , telecommunications , voltage , rectification
This letter presents integrated antenna mixers using simple and striped patches excited by folded slots. Two Schottky‐barrier diodes are inserted in the excitation slot of the antenna to achieve the mixing function. This monolithic system acts simultaneously as an antenna, where the RF is coupled quasioptically through the patch, and as a mixer where the LO frequency pumps the diodes via a coplanar waveguide (CPW) slot line balun. An X ‐band realization (RF=8.7 GHz, LO=7.3 GHz) has given a single‐sideband (SSB) conversion loss of 3.5 dB with high levels of LO‐to‐IF and RF‐to‐LO isolation. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 20: 333–336, 1999.