Title:
SECTOR ANTENNA RECEIVER SYSTEM
Document Type and Number:
Japanese Patent JPS53136421
Kind Code:
A
Abstract:
SECTORED ANTENNA RECEIVING SYSTEM A plurality of horizontally directive antenna sectors are arranged in configuration to receive signals from remote transmitters over a given angle in the horizontal plane. A scanning system is operative in one of several modes to sequentially couple each sector to a receiver. In its first mode, each sector is sequentially scanned with the output signal level therefrom being compared to a reference level. If the signal level on any sector exceeds the reference level the scanner activates to its second mode wherein scanning continues for a predetermined interval. At the end of the interval, scanning is inhibited and the receiver is coupled to that sector which produced the strongest signal level during the second mode scanning cycle. In the inhibit scan mode, if the signal level from the sector falls to a minimum level for a given time period the system reverts to the first scanning mode.
Inventors:
TEIMOSHII FUIRITSUPU KUREIGU
JIEIMUZU ROI SUTEINBURU
JIEIMUZU ROI SUTEINBURU
Application Number:
JP5222578A
Publication Date:
November 29, 1978
Filing Date:
April 28, 1978
Export Citation:
Assignee:
MOTOROLA INC
International Classes:
H04B7/08; H04B7/10; H04B7/26; H01Q3/24; (IPC1-7): H01Q3/24; H04B7/10; H04B7/26