Communications: radio wave antennas – Antennas – With variable reactance for tuning antenna
Reexamination Certificate
2007-07-03
2007-07-03
Wong, Don (Department: 2163)
Communications: radio wave antennas
Antennas
With variable reactance for tuning antenna
C343S7000MS, C343S792500, C343S829000
Reexamination Certificate
active
10944409
ABSTRACT:
There is disclosed an antenna having a tapered radiating element possessing a slow-wave structure along a tapered radiating edge thereof. The radiating element is combined with a ground plane conductor to form a monopole antenna. The slow-wave structure supports an increased antenna operating bandwidth and reduced aperture clutter by being shaped to increase the radiative rate of loss of energy from signals propagating along the slow-wave structure. A log-periodic distribution in the shaping of serrations within the slow-wave structure provides substantially frequency-independent performance across the bandwidth.
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Abstract CA 1055600A Sandoz et al May 29, 1979.
Eskelinen P. Improvements of an Inverted Trapezoidal Pulse Antenna New York IEEE Antennas and Propagation Magazine Jun. 3, 2001.
Ho Binh Van
Lowe Hauptman & Berner LLP
Thales PLC
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