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Wireless circuit device

A radio and receiving circuit technology, which is applied in the field of wireless circuit devices, can solve the problems of deterioration of receiving signal reception sensitivity, inability to achieve low current consumption of the receiving circuit, etc., and achieve the effect of realizing low power consumption and low power consumption

Inactive Publication Date: 2008-09-03
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, the phenomenon that the active circuits of portable wireless terminal devices such as mobile phones are saturated due to the influence of interference waves and the reception sensitivity of received signals deteriorates has been regarded as a problem
However, this cannot achieve low current consumption of the receiving circuit.
[0016] In addition, in the wireless receiving device described in Patent Document 3, when transmitting a wireless signal, only the current flowing in the mixer and the local injection power are uniformly controlled, so there is the same problem as that of the wireless receiver described in Patent Document 2. , can not achieve low current consumption of the receiving circuit

Method used

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Experimental program
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no. 1 Embodiment approach

[0082]FIG. 1 is a block diagram showing a functional configuration of a wireless circuit device 1 of the present invention. In FIG. 1 , a wireless circuit device 1 includes a transmission circuit 2 , a reception circuit 3 , a transmission signal control circuit 4 , a current control circuit 5 , a storage unit 6 , an antenna duplexer 7 , and an antenna 8 . The transmission circuit 2 includes a power amplifier 21 and a modulator 22 . The receiving circuit 3 includes a low noise amplifier 31 , a local signal oscillator 32 and a mixer 33 .

[0083] Modulator 22 modulates transmission data. The modulation method used in the modulator 22 is specified by the transmission signal control circuit 4 .

[0084] The power amplifier 21 amplifies the power of the signal modulated by the modulator 22 and outputs it as a transmission signal. The amplification ratio of the power amplifier 21 is specified by the transmission signal control circuit 4 .

[0085] The transmission signal control...

no. 2 Embodiment approach

[0101] FIG. 4 is a block diagram showing a functional configuration of a radio circuit device 1a according to a second embodiment of the present invention. In FIG. 4 , blocks having the same functions as those of the radio circuit device 1 according to the first embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the wireless circuit device 1a, the difference from the wireless circuit device 1 is that the current control circuit 5 is replaced by the current control circuit 5a, the storage unit 6 is replaced by the storage unit 6a, the receiving circuit 3 is replaced by the receiving circuit 3a, and the receiving circuit 3 is replaced by the receiving circuit 3a. The circuit 3a includes a baseband circuit (BB circuit) 34, and a receiving level detection circuit 9 is added.

[0102] The storage unit 6a stores control information corresponding to the frequency of the transmission signal, the power of the transmission signal, and the ...

no. 3 Embodiment approach

[0111] FIG. 6 is a block diagram showing a functional configuration of a wireless circuit device 1b according to a third embodiment of the present invention. In FIG. 6 , blocks having the same functions as those of the radio circuit device 1 or 1a according to the first or second embodiment are denoted by the same reference numerals, and description thereof will be omitted. In the wireless circuit device 1b, the difference from the wireless circuit device 1 is that the current control circuit 5 is replaced with a current control circuit 5b, the storage unit 6 is replaced with a storage unit 6b, and the receiving circuit 3 is replaced with a receiving circuit 3a. The circuit 3a includes a baseband circuit (BB circuit) 34, a reception level detection circuit 9 is added, and a filter 10 and a reception level detection circuit 11 near the desired wave are added.

[0112] The storage unit 6b is related to the frequency of the transmission signal, the power of the transmission signa...

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Abstract

A current control circuit (5) recognizes whether a transmission signal is transmitted or not, based on a control signal from a transmission signal control circuit (4). When the transmission signal is transmitted, the current control circuit (5) controls a current flowing in a receiving circuit (3) by following control information which corresponds to at least one of two modes in which the transmission signal is transmitted. When the transmission signal is not transmitted, the current control circuit controls a current flowing in the receiving circuit (3) by following control information which corresponds to mode in which the transmission signal is not transmitted.

Description

technical field [0001] The present invention relates to a wireless circuit device for transmitting and receiving wireless signals, and more particularly to a wireless circuit device with an antenna duplexer. Background technique [0002] In recent years, it has been regarded as a problem that the active circuits of portable wireless terminal devices such as mobile phones are saturated due to the influence of interference waves, and the reception sensitivity of received signals deteriorates. [0003] Next, an example in which the above phenomenon becomes a problem will be described more specifically. Conventional mobile phones alternately perform reception and transmission by switching the connection between the antenna and the receiving circuit and the connection between the antenna and the transmitting circuit. However, next-generation mobile phones that use transmission and reception methods such as W-CDMA (Wideband Code Division Multiple Access) generally use an antenna ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40H04B1/3822
CPCH04W52/028Y02D30/70
Inventor 中谷俊文中村弘幸石田薰
Owner PANASONIC CORP
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