Chip antenna, antenna device, and mobile communication apparatus

Details Chip antenna, antenna device, and mobile communication apparatus Chip antenna, antenna device, and mobile communication apparatus

1999-02-04

2000-08-29

Ho, Tan

Communications: radio wave antennas

Antennas

Microstrip

343702, H01Q 138

Patent

active

061115444

ABSTRACT:
The invention provides a chip antenna comprising: a substrate made by laminating a plurality of sheet layers made of ceramic; a radiating conductor having substantially planar shape and provided on said substrate; a grounding conductor having substantially planar shape and provided so as to oppose said radiating conductor with said sheet layers interposed in between; a capacitor conductor having substantially planar shape and provided so as to oppose said radiating conductor and said grounding conductor with said sheet layers interposed in between; a first shorting conductor which connects said radiating conductor and said grounding conductor; a second shorting conductor which connects said grounding conductor and said capacitor conductor; a feed terminal connected to said radiating conductor or said capacitor conductor; and a ground terminal connected to said grounding conductor. According to the above a chip antenna, the resonance frequency can be adjusted readily with compact size can be achieved.

REFERENCES:
patent: 4827266 (1989-05-01), Sato et al.
patent: 5585810 (1996-12-01), Tsuru et al.
patent: 5767808 (1998-06-01), Robbins et al.
patent: 5898403 (1999-04-01), Saitoh et al.
patent: 5917450 (1999-06-01), Tsunekawa et al.

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