Monitor for localizer antenna arrays

Details Monitor for localizer antenna arrays Monitor for localizer antenna arrays

1975-12-15

1978-08-15

Wilbur, Maynard R.

Communications: radio wave antennas

Antennas

Balanced doublet - centerfed

325133, 343109, 343703, G01S 116

Patent

active

041076885

ABSTRACT:
Monitor comprises approximately matched means for sampling currents in the radiating elements. The sample currents are divided into three sets of parts. One set is used for monitoring course position, another set for monitoring course width and the third set is used to monitor magnitudes of the currents in the radiating elements. The interference by the samples in the first and second sets with the monitoring of magnitudes is greatly reduced by selecting path lengths used in the course position and course width monitoring systems so that the interfering effect of the samples in the first and second sets nearly cancel each other. The magnitudes of the currents in the third set are compared with preset standards.

REFERENCES:
patent: 3713160 (1973-01-01), Becavin
patent: 3818476 (1974-06-01), Coulter et al.
patent: 3868689 (1975-02-01), Liu et al.

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