Mobile communication apparatus

Application Number: 00109140
Application Date: 2000.06.12
Publication Number: 1277496
Publication Date: 2000.12.20
Priority Information: 1999/6/15 JP 168215/99
International: H04B1/40
Applicant(s) Name: NEC Corp.
Inventor(s) Name: Ishida Takayasu
Patent Agency Code: 11021
Patent Agent: zhu haibei
Abstract The invention provides a mobile communication apparatus including a plurality of transmitter-receivers of different transmission/reception systems wherein a drop of the sensitivity of one system is minimized. 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.