TY - GEN
T1 - Reconfigurable radiation from a W-band trough waveguide antenna
T2 - 2007 IEEE Antennas and Propagation Society International Symposium, AP-S
AU - Huff, Gregory
AU - Long, A. S.
PY - 2007/12/1
Y1 - 2007/12/1
N2 - This work examines tapered, variable-length, MEMS-based perturbations for fixed frequency beam steering of a W-band trough waveguide antenna. Tapered (non-rectangular) perturbation geometries are utilized to reduce the impedance mismatch due to phase accumulation while scanning through broadside (where perturbations are one-half a guided wavelength), improve the fixed-frequency and frequency-dependant scanning capabilities, and reduce the side-lobes during scanning operations. Three different perturbation geometries (rectangular, sinusoidal, and triangular) are used in this work to study non-uniform, periodic, odd aperture distributions (antiphase constant, sine, and antiphase triangular, respectively) and determine the resulting trade-offs in radiation and impedance behavior of the antenna. By maintaining the impedance match over the range of reconfigured radiation patterns and improving the radiation behavior of the antenna, the capacity of the antenna to support multifunction mm-wave systems can be increased substantially.
AB - This work examines tapered, variable-length, MEMS-based perturbations for fixed frequency beam steering of a W-band trough waveguide antenna. Tapered (non-rectangular) perturbation geometries are utilized to reduce the impedance mismatch due to phase accumulation while scanning through broadside (where perturbations are one-half a guided wavelength), improve the fixed-frequency and frequency-dependant scanning capabilities, and reduce the side-lobes during scanning operations. Three different perturbation geometries (rectangular, sinusoidal, and triangular) are used in this work to study non-uniform, periodic, odd aperture distributions (antiphase constant, sine, and antiphase triangular, respectively) and determine the resulting trade-offs in radiation and impedance behavior of the antenna. By maintaining the impedance match over the range of reconfigured radiation patterns and improving the radiation behavior of the antenna, the capacity of the antenna to support multifunction mm-wave systems can be increased substantially.
UR - http://www.scopus.com/inward/record.url?scp=48349100715&partnerID=8YFLogxK
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U2 - 10.1109/APS.2007.4395442
DO - 10.1109/APS.2007.4395442
M3 - Conference contribution
AN - SCOPUS:48349100715
SN - 1424408776
SN - 9781424408771
T3 - IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
SP - 109
EP - 112
BT - 2007 IEEE Antennas and Propagation Society International Symposium, AP-S
Y2 - 10 June 2007 through 15 June 2007
ER -