Phased-array antenna apparatus

Details Phased-array antenna apparatus Phased-array antenna apparatus

1996-11-08

1998-06-16

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

342 81, 342372, H01Q 324

Patent

active

057678065

ABSTRACT:
In a phased-array antenna apparatus of this invention, one of the transmit/receive modules of each of radiators is set in a receiving operation state in accordance with a control signal from an arithmetic processing unit. An RF reference signal from an exciter is radiated in the air from a reference antenna and received by the transmit/receive modules in the receiving operation state. Thereafter, the signals are frequency-converted by the receiver, and element data are extracted from the signals by a beam forming section. The arithmetic processing unit detects the phase and amplitude data of the reception signals from the transmit/receive modules on the basis of the element data, and compares the detected data with the past phase and amplitude data of the transmit/receive modules, thereby calculating correction data and weight data for the transmit/receive modules.

REFERENCES:
patent: 4134113 (1979-01-01), Powell
patent: 5494245 (1996-02-01), Chazelle et al.
patent: 5579016 (1996-11-01), Wolcott et al.
patent: 5585803 (1996-12-01), Miura et al.
Hans Steyskal. "Digital Beam Forming At Rome Laboratory", The Rome Laboratory Technical Journal, (pp. 7-21), vol. I, No. I, Jun., 1995.

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