Gap feeding type antenna unit

Communications: radio wave antennas – Antennas – Microstrip

Reexamination Certificate

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C343S702000, C343S846000

Reexamination Certificate

active

07019698

ABSTRACT:
A UWB antenna has an upper dielectric, a lower dielectric, and a conductive pattern sandwiched therebetween. The conductive pattern has a vertex apart from a feeding point with a predetermined gap. The conductive pattern has a reversed triangular portion having a right-hand taper part and a left-side taper part which widen from the feeding point at a predetermined angle toward a right-hand side surface and a left-hand side surface, respectively, and a semicircular portion having a base side being in contact with an upper side of the reversed triangular portion. The UWB antenna further has a feeding pattern connected to the feeding point, whereby carrying out feed from the feeding pattern to the conductive pattern by electromagnetic coupling.

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U.S. Appl. No. 10/874,910, filed Jun. 22, 2004, A. Miyoshi et al.
Shlager, K. L. et al.: “A Resistively Loaded Bowtie Antenna for Pulse Radiation: FDTD Analysis and Optimization.” Antennas and Propagation Society International Symposium, 1993. AP-S, Digest Ann Arbor, MI, USA, Jun. 28-Jul. 2, 1993, New York, NY, USA, IEEE, Jun. 28, 1993, pp. 830-833, XP010132611, ISBN: 0-7803-1246-5.

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