Method for automatically realizing tuning of electronic tuning radio

Abstract

The invention provides a method for automatically realizing the tuning of an electronic tuning radio, which relates to the field of a broadcast technology and a computer software application technology. The method for automatically realizing the tuning of the electronic tuning radio mainly utilizes an established test module to carry out automatic test, interpolation operation and fine tuning on an ANT_vtune ATBACK list and an AMP_vtune ATBACK list, so that an antenna tuning loop calibrates r frequency points on some wave band L point by point, obtains accurate Vtune value, and stores the accurate Vtune value into the ANT_vtune ATBACK list, and a high-frequency amplifying tuning loop also calibrates the r frequency points on some wave band L point by point and adjusts the AMP_vtune ATBACKlist in time. The optimal resonance capacitance values of all the frequency points of the radio can be automatically calculated by assessing noise level, so that the optimal tuning of all the frequency points can rapidly and accurately be realized. The invention solves the problem that the optimal tuning can not be carried out on all the frequency points one by one during the production of the electronic tuning radio, overcomes the disadvantages of the long time period and the cumbersome process of manually tuning a sample machine one by one, and reduces the production complexity.

Description

technical field

[0001] The invention relates to the field of broadcasting technology and computer software application technology, in particular to a method for realizing optimal tuning of an electronic tuning radio through an automatic noise evaluation algorithm. Background technique

[0002] Before the emergence of electronic tuning technology, the tuned high-frequency amplifier of the radio composed of antenna loop, high amplifier loop and oscillation loop needs to perform triple tuning among the above three components in order to improve selectivity. Triple tuning is generally realized by using triple variable capacitors. Triple tuning requires that the three resonant circuits of the antenna loop, the high-amplification loop and the mixer local oscillator cooperate with each other to realize the tracking of the three frequency points in the band, in order to achieve the purpose of precise tuning. .

[0003] After the emergence of electronic tuning means, the local oscil...

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