PA (power amplifier) overpower protecting method and device

An over-power protection and power technology, applied in the field of communication, can solve the problems of business impact and system performance that cannot be ignored
CN102780460AInactive Publication Date: 2012-11-14DATANG MOBILE COMM EQUIP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DATANG MOBILE COMM EQUIP CO LTD
Publication Date
2012-11-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a PA (power amplifier) overpower protecting method and a PA overpower protecting device, which is used for realizing the more complete overpower protection of a PA. The method comprises the following steps that the existing statistical energy protection mechanism is adopted; by aiming at in-phase component and orthogonal component data of phase and amplitude signals of each antennas subjected to DUC (digital up converter), CFR (crest ractor reduction) and DPD (digital pre distortion) processing, the sum of the energy value of the orthogonal component data and the energy value of the in-phase component of phase and amplitude signals in each second time duration is respectively calculated, and the second sum value is obtained; and the second sum value is compared with the preset second power protection threshold value, and when the second sum value of any one antenna is greater than the second power protection threshold value, the in-phase component and orthogonal component data of the phase and amplitude signals in each second time duration is sent to the PA after zero clearing, wherein the second time duration is smaller than 1 chip, so the more complete overpower protection of the PA is realized.
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Description

technical field

[0001] The present invention relates to the field of communication technology, in particular to a power amplifier (PA) overpower protection method and device. Background technique

[0002] TD-SCDMA and TD-LTE are the current mainstream 3G and 4G wireless communication technology standards. In the wireless communication system networking, the power amplifier (PA) used in the base station equipment is an important device to ensure seamless system coverage and reasonable cost performance. How to protect the PA to the greatest extent and prolong the service life of the PA is one of the technical issues that various wireless communication equipment manufacturers and operators focus on.

[0003] In the prior art, the high-power amplifier used in the base station equipment of the wireless communication system works at a frequency of about GHZ, the rated output power is above 40dbm, and the gain characteristic at the rated output power is also above 40db, which is re...

Claims

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