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An FET active notch antenna stabilized with a slot‐line ring resonator
Author(s) -
Montiel Claudio M.,
Fan Lu,
Chang Kai
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(19990520)21:4<288::aid-mop17>3.0.co;2-7
Subject(s) - electrical engineering , antenna (radio) , slot antenna , antenna efficiency , engineering , microwave , radiation pattern , antenna measurement , transmitter , optoelectronics , physics , telecommunications , channel (broadcasting)
This paper discusses the design and measurements of an FET‐driven active flared slot‐line antenna. The antenna radiates a clean spectrum with good radiation patterns. There are half‐power beamwidths of 40 and 63° and CPLs of 14.1 and 10.3 dB below copolarization for the E ‐ and H ‐planes, respectively. The active antenna provides a good dc–RF conversion efficiency of 17.8%. The antenna's low power requirements and good radiation characteristics make it suitable for military and commercial applications for a communication, sensor, or radar transmitter or for spatial power‐combining arrays. ©1999 John Wiley & Sons, Inc. Microwave Opt Technol Lett 21: 288–291, 1999.