Title:
【発明の名称】アンテナビーム境界検知装置および方法
Document Type and Number:
Japanese Patent JP2927813
Kind Code:
B2
Abstract:
An antenna beam boundary detector for a sectorized cellular system is disclosed. The difference in signal level received by a main directional antenna and a broad beamwidth antenna is determined by detecting a modulator signal locally impressed on the signal received by the broad beamwidth antenna. The signal level difference factor is the directional antenna beam boundary when the two antennas are correlated. Interferometer effects are cancelled by detecting both amplitude and phase modulation of the locally impressed modulation.
Inventors:
BIKUTAA GURAJIANO
Application Number:
JP4671089A
Publication Date:
July 28, 1999
Filing Date:
March 01, 1989
Export Citation:
Assignee:
MOTOROORA INC
International Classes:
H01Q1/22; H01Q21/29; H04W36/30; (IPC1-7): H04Q7/22
Domestic Patent References:
| JP58195329A | ||||
| JP5385908U | ||||
| JP476525B2 |
Attorney, Agent or Firm:
Yoshiaki Ikeuchi