The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 13, 2003
Filed:
Jun. 14, 2000
Takayasu Ishida, Shizuoka, JP;
NEC Corporation, Tokyo, JP;
Abstract
The invention provides a mobile communication apparatus of the diversity system including a plurality of transmitter-receivers of different transmission/reception systems wherein a drop of the antenna reception sensitivity of one system by an output from the antenna of the other system is minimized and the synchronism keeping accuracy is augmented and besides unnecessary dissipation of power is prevented. The mobile communication apparatus includes a first transmitter-receiver including a transmission antennae and operable for outputting, upon transmission, a gain decrease instruction, a second transmitter-receiver including a plurality of antennae and operable for selecting one of the plurality of antennae which has a high antenna gain so as to be used for reception, and a gain adjustment section for decreasing an antenna gain of one of the plurality of antennae of the second transmitter-receiver which has a high degree of coupling to the transmission antenna of the first transmitter-receiver in accordance with the gain decrease instruction.