Antenna apparatus having high receiving efficiency

Details Antenna apparatus having high receiving efficiency Antenna apparatus having high receiving efficiency

2006-04-11

2006-04-11

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S702000, C343S833000

Reexamination Certificate

active

07026996

ABSTRACT:
An antenna apparatus comprise a main antenna line element (22) and a parasitic antenna line element (23) which are located above a conductive plate (21). A feeding terminal (24) is connected to a first end portion (221) of the main antenna line element (23). A second end portion (222) of the main antenna line element (23) comprises an open end. A grounding terminal (25) is connected to a third end portion of the parasitic antenna line element (23). A fourth end portion (232) comprises an open end. The first end portion (221) is close to the third end potion (233) and extend opposite directions. The second end portion (222) extend in the direction perpendicular to the first and the third end portions (221and231).

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K. Hirose et al., “A Two-Wire Spiral Antenna With Unbalanced Feed”, Tokyo Denki University, College of Science and Engineering, pp. 128-131, IEEE 2001, XP 10564599A1.

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