Direction adjustment indicator for a satellite radio wave receiv

Details Direction adjustment indicator for a satellite radio wave receiv Direction adjustment indicator for a satellite radio wave receiv

1994-04-14

1996-05-21

Tarcza, Thomas H.

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

Directive

Including antenna orientation

342 75, 342426, 343757, H01Q 300

Patent

active

055194052

ABSTRACT:
A direction adjustment indicator for a satellite radio wave receiving antenna comprises a demodulating circuit to demodulate a satellite radio wave received by the antenna, a peak holding circuit always to output a held peak value of the demodulated output of the demodulating circuit, a comparator circuit and a display element. The comparator circuit compares the instantaneous value of the demodulated output and the held peak value, and outputs a signal when both values are equal and another different signal when both values are not equal. The display element gives two different kinds of display in accordance with the signals. While the azimuth angle of the antenna is varied in one direction, a peak value of the demodulated output is held and while the angle is varied in the opposite direction, the optimum azimuth angle is displayed for which the instantaneous value of the demodulated output agrees with the held peak value.

REFERENCES:
patent: 3671969 (1972-06-01), Basman
patent: 4054871 (1977-10-01), Terrell et al.
patent: 4187501 (1980-02-01), Obsch et al.
patent: 4282524 (1981-08-01), Eymann et al.
patent: 4853839 (1989-08-01), Nichols et al.
patent: 5296862 (1994-03-01), Rodeffer et al.

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