Adaptive antenna unit and terminal equipment

Details Adaptive antenna unit and terminal equipment Adaptive antenna unit and terminal equipment

2005-11-01

2005-11-01

Chen, Shih-Chao (Department: 2821)

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

C343S833000

Reexamination Certificate

active

06961026

ABSTRACT:
An adaptive antenna unit includes feeding antenna elements arranged so as to reduce spatial correlations thereof, parasitic antenna elements, provided with respect to each of the feeding antenna elements and arranged so as to increase mutual coupling between a corresponding one of the feeding antenna elements, variable reactance elements each terminating a corresponding one of the parasitic antenna elements, and a control section. The control section controls reactances of the reactance elements and controls weighting of the reception signals received by the feeding antenna elements, in response to the reception signals.

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Dinger, “Reactivity steered adaptive array using microstrip patch at 4 GHZ”, IEEE Trans. Antennas & Propag., vol. AP-32 No. 8, pp. 848-856, Aug. 1984.
Dinger, et al., “A Compact HF Antenna Array Using Reactively-Terminated Parasitic Elements for Pattern Control” Naval Research Laboratory Memorandum Report 4797, May 1992 pp. 1-32.
Dinger, “A Planar Version of A 4.0 GHZ Reactively Steered Adaptive Array” IEEE Trans. Antennas & Propag., vol. AP-34, No. 3 pp. 427-431, Mar. 1986.
Harrington, “Ractively Controlled Directive Arrays”IEEE Trans. Antennas & Propag., vol. AP-26, No. 3, pp. 390-395, May 1978.

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