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Warm back-up and multual-aid system of power amplifier

A power amplifier and backup technology, applied in the direction of power amplifiers, amplifiers, amplifier combinations, etc., can solve the problems of reduced sector isolation, failure to meet adjacent frequency interference requirements, phase difference, etc., and achieve the effect of increasing output power

Active Publication Date: 2008-10-15
HONOR DEVICE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] 1. Due to design or process reasons, the coupling degree of the 3dB bridge coupler is not the ideal 3dB; even an ideal 3dB bridge generally only meets the requirements of phase and coupling degree at the center frequency point, while For signals that deviate from the center frequency, the amplitude and phase difference cannot meet the requirements at the same time in theory;
[0011] 2. If the lengths of the four transmission lines A1, A2, A3, A4 in the pre-mixing matrix are not equal, or the lengths of the transmission lines B1, B2, B3, B4 connecting the pre-mixing matrix and the power amplifier matrix are not equal, or connecting the power amplifier The lengths of the transmission lines C1, C2, C3, and C4 of the matrix and the post-mixing matrix are not equal, or the transmission lines D1, D2, D3, and D4 of the post-mixing matrix are not equal, which will cause additional phase differences;
[0013] All of the above factors will lead to a decrease in sector isolation. Under general process conditions, it is difficult to achieve 25dB of sector isolation, and the index of 25dB can no longer meet the protocol requirements of the CDMA system, and it is far from meeting the special sector configuration. Adjacent channel interference requirements under the condition
[0014] In the commercial process of the above-mentioned prior art system, when one of the power amplifiers is replaced, it is necessary to find a power amplifier with the same gain and phase as the replaced power amplifier, which is very difficult

Method used

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  • Warm back-up and multual-aid system of power amplifier
  • Warm back-up and multual-aid system of power amplifier
  • Warm back-up and multual-aid system of power amplifier

Examples

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no. 1 example

[0041] The first embodiment illustrates the implementation of the present invention by using 1+1 hot backup and mutual assistance technology. figure 2 The structure of the system in the first embodiment shown, the system includes a main power amplifier PA1, a backup power amplifier PA and a switching module, wherein the switching module includes an input switching module and an output switching module, since there is only one main power amplifier , so the input switching module and the output switching module respectively include an input switching circuit and an output switching circuit. The above-mentioned input switching circuit has the functions of power distribution and microwave single-pole double-throw switching, and the output switching circuit has the functions of power combining and microwave single-pole double-throw switching.

[0042] refer to figure 2 , the input switch circuit includes transmission lines A1, B1, C1, D1, E1, F1, G1, H1, I1, J1, K1, switching de...

no. 2 example

[0051] The 1+1 hot backup and mutual aid system of the power amplifier is given in the first embodiment, and the 3+1 hot backup and mutual aid system of the power amplifier will be given in the second embodiment of the present invention.

[0052] refer to image 3 , the power amplifier system of the second embodiment includes three main power amplifiers PA1, PA2, PA3, a backup power amplifier PA and a switching module, wherein the switching module includes an input switching module and an output switching module, since there are three main power amplifiers , so the input switching module and the output switching module respectively include corresponding three input switch circuits and three output switch circuits. Each of the above-mentioned input switching circuits has the functions of power distribution and microwave single-pole double-throw switching, and each output switching circuit has the functions of power combining and microwave single-pole double-throw switching.

...

no. 3 example

[0065] Different from the first embodiment and the second embodiment, the third embodiment of the present invention provides different structures of the input switch circuit and the output switch circuit. The third embodiment uses a 1+1 hot backup and mutual aid system to illustrate the system.

[0066] refer to Figure 4 , the power amplifier system of the third embodiment includes a main power amplifier PA1, a backup power amplifier PA and a switching module, wherein the switching module includes an input switching module and an output switching module, since there is only one main power amplifier, the input switching module The and output switch modules respectively include an input switch circuit and an output switch circuit. The above-mentioned input switching circuit has the functions of power distribution and microwave single-pole double-throw switching, and the output switching circuit has the functions of power combining and microwave single-pole double-throw switchi...

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PUM

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Abstract

This invention discloses a power amplifier system including: M primary power amplifiers and a backup power amplifier, in which, M is a positive integral, an input switch module connected with the inputs of the primary and the backup power amplifiers, an output switch unit connected with the outputs of the two amplifiers , in the system, after the M signals are input into the power amplifier and processed by the input switch module, they are output by the output switch module, the backup power amplifier in this invention exists independently, which can replace faulty primary power amplifiers immediately without stopping.

Description

technical field [0001] The invention relates to the technical field of power amplifiers, in particular to the hot backup and mutual aid system of power amplifiers. Background technique [0002] With the development of mobile communications, RF power amplifiers are widely used in wireless access and microwave systems to amplify signals and become an important part of the system. In the CDMA wireless access multi-carrier system, there is only one power amplifier in one sector. If the power amplifier in a certain sector fails, mobile terminal users in this sector cannot be connected. Therefore, the CDMA wireless access multi-carrier system puts forward high requirements on the stability and reliability of the power amplifier. [0003] Since the power amplifier works in a state of high current and high voltage, and the thermal environment in which the power amplifier works is not good, the power amplifier is prone to failure. Therefore, it is necessary to develop the hot backu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/00H03F3/72H03F3/20H04B1/74
CPCH04B1/74H03F3/602H03F1/526H04B1/0483H03F3/24H03F3/68H03F3/72
Inventor 袁文欣
Owner HONOR DEVICE CO LTD