Antenna apparatus

Details Antenna apparatus Antenna apparatus

2007-03-13

2007-03-13

Wimer, Michael C. (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S769000

Reexamination Certificate

active

10988956

ABSTRACT:
A ring electrode is disposed in a ring shape opposite to a grounded electrode in a flat shape at a predetermined distance therefrom. A connection member is disposed which is made up of impedance converting portion and transmission line portion, connected in series with impedance converting portion, between the inner side of ring electrode and feeding terminal. Thus, an antenna apparatus easy to achieve impedance matching thereof by use of a connection member can be economically realized.

REFERENCES:
patent: 4987421 (1991-01-01), Sunahara et al.
patent: 5675346 (1997-10-01), Nishikawa et al.
patent: 4-88702 (1992-03-01), None
patent: 4-67363 (1992-10-01), None

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