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Portable broadcast monitoring receiver

A receiver, portable technology, applied in the direction of broadcast monitoring/testing/troubleshooting devices, etc., can solve the problems of inconvenient use, complex structure of monitoring equipment, etc., and achieve the effects of convenient use, simple and easy monitoring and measurement, and convenient assembly and maintenance

Inactive Publication Date: 2012-01-04
SHIJIAZHUANG DEV ZONE TAISHUN ELECTRONICS COMM
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a portable broadcast monitoring receiver to solve the problems of complex structure and inconvenient use of existing monitoring equipment

Method used

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  • Portable broadcast monitoring receiver

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Embodiment Construction

[0029] like figure 1 As shown, the broadcast monitoring receiver of the present invention includes a low-pass filter and a sub-octave filter circuit 1, a high-frequency channel gating circuit 2, a first local oscillator circuit 3, a first frequency mixing circuit 4, a first intermediate amplifier and an intermediate frequency Filter circuit 5, second local oscillator circuit 6, second frequency mixing circuit 7, second intermediate amplifier and intermediate frequency filter circuit 8, third local oscillator circuit 9, third mixer circuit 10, third intermediate amplifier and intermediate frequency filter Circuit 11, wave detection or frequency discrimination demodulation circuit 12, A / D conversion and sampling circuit 13, DSP processing chip 14, FPGA chip 15, program and data memory 16, voice compression chip 17, controller 18 and other parts.

[0030] Wherein, the low-pass filter in the low-pass filter and the sub-octave filter circuit 1 is a low-pass filter of 30MHz, such as...

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PUM

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Abstract

The invention relates to a portable broadcast monitoring receiver which comprises a lowpass filtering and suboctave filter circuit, a high frequency channel gate circuit, a first local oscillator circuit, a first mixer circuit, a first mid-frequency amplifier and mid-frequency filter circuit, a second local oscillator circuit, a second mixer circuit, a second mid-frequency amplifier and mid-frequency filter circuit, a third local oscillator circuit, a third mixer circuit, a third mid-frequency amplifier and mid-frequency filter circuit, a detection or frequency discrimination demodulator circuit, an A / D (analog / digital) conversion and sampling circuit, a DSP (digital signal processor) processing chip, an FPGA (field programmable gate array) chip, a programming and data memory, a voice compressed chip, a controller and the like. The invention provides a broadcast monitoring and receiving device which is developed for radio and television administrative departments to master the detailed quality condition of wireless broadcast coverage of AM / FM modulation in responsible regions and all kinds of technical indexes including frequency deviation, power level and modulation degree of operating frequency, the digitization of the sound signal, code rate compression and the like.

Description

technical field [0001] The invention relates to a broadcast communication monitoring device, in particular to a portable broadcast monitoring receiver for monitoring AM / FM modulated broadcast quality indicators. Background technique [0002] At present, the radio and television management department monitors and measures the quality indicators of AM / FM modulated wireless broadcast signals, such as the frequency deviation of the frequency used, power level (including frequency band level scanning), modulation degree, digitization of audio signals, and code When measuring technical performance indicators such as rate compression, it is often necessary to build and connect multiple related measuring instruments, or to select box-type / desk-top related measuring equipment for measurement. inconvenient. Contents of the invention [0003] The purpose of the present invention is to provide a portable broadcast monitoring receiver to solve the problems of complex structure and inc...

Claims

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Application Information

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IPC IPC(8): H04H20/12
Inventor 周希国周贤博苏鸿宾
Owner SHIJIAZHUANG DEV ZONE TAISHUN ELECTRONICS COMM
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