Signal processing circuit

A signal processing circuit and circuit technology, applied in the field of communication, can solve problems such as poor applicability of limiter circuits

Pending Publication Date: 2021-09-14
HANDAN BRANCH OF CHINA MOBILE GRP HEBEI COMPANYLIMITED +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above problems, an embodiment of the present invention provides a signal processing circuit for solving the problem of poor applicability of the limiter circuit in the prior art

Method used

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Embodiment Construction

[0041] Exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein.

[0042] figure 1 A structural block diagram of a signal processing circuit according to the first embodiment of the present invention is shown. The circuit is applied in the wireless signal transceiving link. It is used to limit the power of the radio frequency signal before the radio frequency signal is input into the active antenna device, so that the power of the radio frequency signal is within the specified range, so as to avoid damage to the active antenna device. Such as figure 1 As shown, the circuit includes: a first attenuation circuit 10 , a second attenuation circuit 20 , a power coupling circuit 30 , a powe...

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Abstract

The embodiment of the invention relates to the technical field of communication, and discloses a signal processing circuit which comprises a first attenuation circuit, a second attenuation circuit, a power coupling circuit, a power detection circuit and a control circuit. The first attenuation circuit receives a power signal and sends the power signal to the second attenuation circuit; the power coupling circuit is connected with the second attenuation circuit, and the coupling end of the power coupling circuit is connected with the power detection circuit; the input end of the power detection circuit is connected with the coupling end of the power coupling circuit, the output end of the power detection circuit is connected with the input end of the control circuit, a first voltage signal is generated according to the amplitude of a detected detection signal, and the first voltage signal is sent to the control circuit; and the input end of the control circuit is connected with the output end of the power detection circuit, and the first output end and the second output end of the control circuit output a first control signal and a second control signal respectively. According to the embodiment of the invention, the amplitude limiting of the input power signal is realized.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of communications, and in particular to a signal processing circuit. Background technique [0002] In a wireless communication system, the output signal of the wireless signal transceiving link is amplified and enters the active antenna device. If the output signal of the wireless signal transceiver link is too large, it will cause damage to the active antenna device. In order to prevent the active equipment from being damaged, the signal is limited by the limiting circuit before inputting into the active antenna equipment. [0003] The existing limiter circuit realizes limiter by cascading limiter tubes. The limiting value of the limiting tube cannot be adjusted after the limiting tube is selected, resulting in poor applicability of the limiting circuit. Contents of the invention [0004] In view of the above problems, an embodiment of the present invention provides a signal p...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G05B19/042
CPCG05B19/0423G05B2219/25257
Inventor赵威董健刘鹏王超薛云山秘俊杰
OwnerHANDAN BRANCH OF CHINA MOBILE GRP HEBEI COMPANYLIMITED