Aim satellite and data receiving circuit for satellite communication receiver

A satellite communication and receiving circuit technology, applied to electrical components, transmission systems, etc., can solve problems such as troubles, and achieve the effects of easy portability, small clutter interference, and outdoor measurement

Inactive Publication Date: 2011-04-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Description
  • Claims
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Problems solved by technology

But at some point, technicians often need to set up satellite communication equipment in the

Method used

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  • Aim satellite and data receiving circuit for satellite communication receiver
  • Aim satellite and data receiving circuit for satellite communication receiver
  • Aim satellite and data receiving circuit for satellite communication receiver

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Embodiment Construction

[0019] The present invention adopts a double frequency conversion structure, and when performing star alignment, the beacon signal with a frequency of 4193 MHz is converted twice to output an intermediate frequency signal of 10.7 MHz. After the star alignment is completed, the data signal with a frequency of 3643MHz to 4425MHz is received by changing the two-stage local oscillator signal. The schematic diagram of the circuit structure of the present invention is as figure 1 shown.

[0020] In the present invention:

[0021] Both mixers use silicon-based bipolar active double-balanced mixers, which integrate a local oscillator amplifier and an intermediate frequency amplifier; the operating frequency range is 0.1-5GHz, and the intermediate frequency output is DC-1GHz. The typical power required by the local oscillator is -5dBm. Single 5V power supply, surface mount small package, very suitable for system miniaturization design. In the first stage of down-conversion, the fre...

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Abstract

The invention discloses an aim satellite and data receiving circuit for a satellite communication receiver, belonging to the technical field of electronic communication. A satellite beacon signal or data signal is subject to down-conversion by a first mixer so that a first intermediate-frequency signal is obtained; the first intermediate-frequency signal successively passes through a band-pass filter, a first amplifier, a numeral control attenuator and a temperature-compensating attenuator, and then is subject to the down-conversion by a second mixer so that a second intermediate-frequency signal is obtained; and after the second intermediate-frequency signal successively passes through a low pass filter and a second amplifier, a one-way signal is output by the through output end of a coupler to be used for subsequent processing, and the other one-way signal is output by the coupling end of the coupler is filtered by a crystal band-pass filter and then is converted into a direct current voltage signal by a logarithmic detector. In the invention, the detector is arranged in the receiver so that the beacon signal is converted into a direct current voltage convenient for measurement, thereby being convenient for finishing aim satellite in the wild; and when the aim satellite work is completed, the circuit can also be utilized to receive the data signal. The circuit disclosed by the invention has the characteristics of good sensitivity, dynamic range, small noise jamming and the like, and is convenient for carrying.

Description

technical field [0001] The invention belongs to the technical field of electronic communication, and relates to a satellite communication receiver and data receiving circuit, which is mainly used for the satellite communication receiver to complete the two functions of star alignment and data reception. Background technique [0002] When installing satellite communication equipment, technicians first need to align the satellite. The so-called star alignment is to align the antenna of the communication equipment with the satellite to ensure that the communication equipment can receive the maximum satellite signal power. When aligning the star, it is impossible to judge whether it is aligned with the naked eye, and electronic equipment is often needed for auxiliary judgment. Under normal circumstances, the technician receives the beacon signal of the satellite, performs power measurement on the spectrum analyzer or power meter, and rotates the antenna until the spectrum analy...

Claims

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Application Information

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IPC IPC(8): H04B1/16
Inventor 杨自强杨涛张志喜黄海刘辉于实
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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