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A beam‐forming technique for leaky‐wave antennas
Author(s) -
Chen IYu,
Wang ChienJen,
Liu ShihJeng,
Jou Christina F.
Publication year - 2000
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 - 10.1002/1098-2760(20010120)28:2<108::aid-mop9>3.0.co;2-z
Subject(s) - leaky wave antenna , microwave , microstrip , bandwidth (computing) , leaky mode , microstrip antenna , optics , radiation , beam steering , beam (structure) , mode (computer interface) , engineering , acoustics , antenna (radio) , electrical engineering , physics , telecommunications , computer science , radiation mode , single mode optical fiber , laser , operating system
A beam‐forming technique for leaky‐wave antennas (LWAs) which can switch electronically in three different radiation patterns is developed in this letter. A simple two‐terminal feeding microstrip‐line LWA works as a radiating element. By varying the phase of the two injection signals from 0 to 180°, the emitting power from the LWA can produce three different radiation modes: the normal mode (one sharp beam), the difference mode (Δ), and the sum mode (Σ). The antenna displays large‐bandwidth characteristics, and can be useful near crossroads for collision avoidance or in the radio location of vehicles. © 2001 John Wiley & Sons, Inc. Microwave Opt Technol Lett 28: 108–110, 2001.