Planar antenna apparatus

Details Planar antenna apparatus Planar antenna apparatus

2008-04-15

2008-04-15

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Wave guide type

C343S7000MS

Reexamination Certificate

active

11230821

ABSTRACT:
An antenna apparatus including a dielectric substrate, a planar antenna element disposed on the substrate, and a waveguide for propagating electromagnetic waves to or from the planar antenna element. The waveguide includes at least a first conductor and a second conductor extending along each other. Near a connection portion formed between the first and second conductors and the planar antenna element, there is provided a taper region in which a distance between mutually-facing edge portions of the first conductor and the second conductor increases approximately monotonically toward the planar antenna element.

REFERENCES:
patent: 6259407 (2001-07-01), Tran
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patent: 6753746 (2004-06-01), Lin et al.
patent: 6835925 (2004-12-01), Itsuji et al.
patent: 7183977 (2007-02-01), Suh
patent: 2006/0085159 (2006-04-01), Itsuji et al.
patent: 2007/0030115 (2007-02-01), Itsuji et al.
patent: 1-300701 (1989-12-01), None
Takuya Taniguchi et al., “Antenna Development For Ultra Wideband Measurement Applications”, Technical Report Of IEICE, WBS2003-12, MW2003-24 (May 2003). (w/abstract).
U.S. Appl. No. 10/587,262 (Takeaki Itsuji), pending.

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