Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2005-09-07
2010-10-12
Wimer, Michael C (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S778000, C343S786000, C343S837000
Reexamination Certificate
active
07812767
ABSTRACT:
A small antenna device having an increased gain is provided. The antenna device includes a multilayer dielectric substrate composed of a combination of a plurality of dielectric layers, wherein a feeding antenna is provided in a lower layer of the multilayer substrate, a reflective metal plate is provided above the feeding antenna, and circular or rectangular metal loops are arranged so as to be of increasing diameter from lower layers toward upper layers in the plurality of dielectric layers.
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Seki, Tomohiro, et al., “Novel Microstrip Antenna Employing Stacked Rings on Multi-Layer Ceramic Substrate for mm-Wave Applications,” 2005 IEEE MTT-S International Microwave Symposium, Piscataway, NJ, USA, IEEE, Jun. 12, 2005, pp. 1405-1408, XP010844897, ISBN: 978-0-7803-8846-8.
Honma Naoki
Nishikawa Kenjiro
Seki Tomohiro
Tsunekawa Kouichi
Harness & Dickey & Pierce P.L.C.
Nippon Telegraph and Telephone Corporation
Wimer Michael C
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