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Reception device

一种接收装置、接收信号的技术，应用在接收器监控、空间发射分集、极化/方向分集等方向，能够解决接收指向性模式与发射指向性模式不一致等问题，达到提高指向性形成精度、消除增益偏差的效果

Inactive Publication Date: 2006-05-31
SANYO ELECTRIC CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] For this reason, when the amplitude difference of each received signal when there is a gain deviation state in each signal processing unit for reception is processed as the amplitude difference of each signal processing unit for transmission, a mismatch between the receiving directivity pattern and the transmitting directivity pattern occurs. The problem

Method used

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no. 1 approach

[0028] The receiving device in the first embodiment includes a plurality of antennas, and a signal processing unit that processes received signals of the plurality of antennas, and each signal processing unit includes a variable gain amplifier for performing automatic gain control.

[0029] In this receiving device, the gain control signal is generated by assigning the signal with the highest level among the signals obtained from the respective signal processing units. Then, when using the gain control signal to collectively control the gain of each variable gain amplifier, an offset corresponding to the gain deviation generated by each signal processing unit is added to the gain control signal of each signal processing unit, and the offset is added. The gain control signal controls the gain of the variable gain amplifier on each signal processing unit.

[0030] In addition, in order to achieve the offset of each signal processing unit to correctly offset the deviation of the ...

no. 2 approach

[0061] The receiving apparatus according to the second embodiment is different from the first embodiment in terms of using offsets stored in advance in each signal processing unit in association with a plurality of different reception signal frequencies and a plurality of different gain control signal levels. The receiving device in the mode is different. Hereinafter, the description will be mainly focused on differences from the reception device in the first embodiment.

[0062] image 3 It is the offset table 720 set in the offset storage unit of each signal processing unit in the receiving device under the second embodiment, after establishing correspondence between different multiple received signal frequencies and different multiple gain control signal levels memory bias.

[0063] The offset table 720 maintains the carrier frequency of the received signal in the received signal frequency column 721 of each row, and maintains the lower limit value and upper limit value i...

no. 3 approach

[0069] In the receiving apparatus of the third embodiment, unlike a variable gain amplifier for applying AGC (Automatic Gain Control), other variable gain amplifiers for achieving uniform gain of each signal processing unit are inserted in series in each signal processing unit. The aspect of the processing unit is different from that of the receiving device in the first embodiment.

[0070] Figure 5 It is a functional block diagram showing the overall configuration of the receiving device 2 in the third embodiment. The same reference numerals are assigned to the same constituent elements as those of the receiving device 1 according to the first embodiment, and description thereof will be omitted.

[0071] In the receiving device 2, the gain control signal generated by the gain control signal generating unit 60 is converted into an analog voltage signal by a D / A converter without additional bias in order to unify the gain of each signal processing unit, and jointly controls t...

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Abstract

A gain control signal generating unit (60) generates a gain control signal by utilizing a maximum level signal among signals from respective signal processing units. The gain unification unit (70) stores an offset in the offset storage unit (72a, 72b), which offset is equivalent to the gain generated on each signal processing unit when the respective variable gain amplifiers are jointly controlled by using the gain control signal. deviation. For each signal processing unit, the bias is added to the gain control signal, and the gain control signal after the bias addition is used to control the variable gain amplifier (26a, 26b). Under the control of the correction control unit (80), the correction signal supply unit (90) and the offset determination unit (73) provide a correction signal and a correction gain control signal respectively. The offset determination unit (73) determines a uniform offset for the level signals from each signal processing unit, and updates the offset storage units (72a, 72b).

Description

technical field [0001] The present invention relates to a receiving device, in particular to a technique for evenly aligning the gains of each signal processing unit in the receiving device, and each signal processing unit processes respective received signals of a plurality of antennas. Background technique [0002] Conventionally, a wireless communication device that selectively communicates with a counterpart device located in a desired direction by using an adaptive antenna array device has been put into practical use. [0003] The composition of the adaptive antenna array device usually includes: a plurality of antennas, and a signal processing unit for separately processing the respective transmitting and receiving signals of the multiple antennas, and forming the overall antenna by assigning the amplitude difference and phase difference to the transmitting and receiving signals of each antenna. A directional processing unit for the desired directional mode. [0004] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/08H03M1/10H03M1/18H04B1/16H04B1/18H04B1/30H04B7/005H04B7/10H04B17/00H04B17/40
CPCH03M1/1023H03M1/187H04B1/30H04B7/0848H04B7/086H04W52/42H04W52/52H04B17/21
Inventor 成田雅裕
Owner SANYO ELECTRIC CO LTD
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