Mobile communication apparatus

• US 20050176382A1
• Filed: 04/23/2003
• Published: 08/11/2005
• Est. Priority Date: 05/09/2002
• Status: Abandoned Application

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Shinomiya, Masato, Kamiya, Tadahisa, Mochizuki, Makoto
• Application Number:
  US10/513,677
• Publication Number:
  US 20050176382A1
• Time in Patent Office: Days
• US Class Current: 455/78
• CPC Class Codes: H04B 7/0602 using antenna switching H04B7/0686 takes precedence; antenna beam directivity switching H01Q3/24
• CPC Class Codes: H04B 7/0805 with single receiver and antenna switching H04B7/0822 takes precedence

Abstract

A purpose of the present invention is to improve a reception sensitivity when simultaneous transmitting/receiving operations are not carried out in a mobile communication apparatus capable of performing the simultaneous transmitting/receiving operations. The mobile communication apparatus, according to the present invention, is comprised of an antenna selector (13) for switching a connection between a first antenna A (11) and a second antenna B (12), and is selectively connected with a transmission system which contains a transmission-side filter (14) and a transmitting unit (16), and with respect to a reception system which contains a reception-side filter (15) and a receiving unit (17). In the antenna selector (13), at timing for performing a transmitting operation, the transmission system is connected to any one of the antennas A (11) and B (12) by way of switches A (21) and C (23); at timing for performing a receiving operation, the reception system is connected to any one of the antennas A (11) and B (12) by way of switches B (22) and D (24); and at timing for executing transmitting/receiving operations at the same time, both the transmission-side filter (14) and the reception-side filter (15) are connected to any one of the antennas A (11) and B (12) by way of the switches A (21), B (22), C (23), and D (24), so that an antenna commonly-operable device is constructed.

Claims

1. A mobile communication apparatus capable of simultaneously performing operations for transmission and reception, the mobile communication apparatus, comprising:

a transmission system for processing a transmission signal;

a reception system for processing a reception signal;

a plurality of antennas for connecting the transmission system and the reception system;

a switch which selectively connects the plurality of antennas with the transmission system and the reception system; and

an antenna selector which operates, to connect the transmission system with any one of the plurality of antennas at timing when a transmitting operation is performed, to connect the reception system to any one of the plurality of antennas at timing when a receiving operation is performed, to connect both a transmission-side filter in the transmission system and a reception-side filter in the reception system with any one of the plurality of antennas so as to constitute an antenna commonly-operable device at timing when transmitting/receiving operations are simultaneously performed, or to connect both the transmission system and the reception system with separate antennas among the plurality of antennas.

2. The mobile communication apparatus as set forth in claim 1, wherein the antenna selector performs a connection control operation for connecting the plurality of antennas with the transmission system and the reception system by using a transmission timing signal indicative of the timing for performing the transmitting operation and a reception timing signal indicative of the timing for performing the receiving operation as control signals.

3. The mobile communication apparatus as set forth in claim 1 wherein the antenna selector independently performs a diversity operation during at least one of the transmitting operation and the receiving operation by using a transmission antenna switching signal indicative of the antenna selection when the transmitting operation is performed and a reception antenna switching signal indicative of the antenna selection when the receiving operation is performed as control signals.