Telecommunications – Transmitter and receiver at same station – Radiotelephone equipment detail
Reexamination Certificate
2006-09-19
2006-09-19
Beamer, Temica (Department: 2617)
Telecommunications
Transmitter and receiver at same station
Radiotelephone equipment detail
C342S373000
Reexamination Certificate
active
07110794
ABSTRACT:
An adaptive array apparatus includes a control unit50and a plurality of radio units10˜40that each have a modulator11, a transmission circuit12, a switch13, a phase detecting unit14, a reception circuit15, and a demodulator16. For each radio unit10˜40, the control unit50compensates a phase amount for generating a directivity pattern used for an output signal according to a difference in phase shift amounts between a transmission subsystem and a reception subsystem.
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“Spectral efficiency improvement by base station antenna pattern control for land mobile cellular systems,” The Institute of Electronics, Information and Communication Engineers; Technical Report of IEICE, MW93-25, RCS93-8 (May 1993), pp. 55-60, No Month Listed.
International Publication No. WO98/56121, published Dec. 10, 1998 & EP 0 961 416 A, published Dec. 1, 1999.
Arent & Fox PLLC
Beamer Temica
Contee Joy K.
Sanyo Electric Co,. Ltd.
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