A signal frequency detection method, device and signal frequency controller
A signal frequency and detection device technology, applied in the direction of automatic power control, electrical components, etc., can solve the signal count error of the frequency detection device 2, increase the power consumption of the frequency detection device 2, increase the structural complexity of the frequency detection device 2, etc. problems, to achieve the effect of ensuring work stability and accuracy
Active Publication Date: 2020-09-22
上海顺久电子科技有限公司
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[0005] However, if the frequency of the output signal of the oscillator 1 is high, the frequency of the clock source in the frequency detection device 2 will also be multiplied, which not only increases the power consumption of the frequency detection device 2, but also increases the structural complexity of the frequency detection device 2 ; In addition, when the frequency of the output signal of the oscillator 1 exceeds the bandwidth and the timing limit of the internal integrated circuit of the frequency detection device 2, it will also cause the signal counting error problem of the frequency detection device 2
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[0035] Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present invention. Rather, they are merely examples of apparatuses and methods consistent with aspects of the invention as recited in the appended claims.
[0036] In view of the high frequency of existing signals (in the order of GHz), when the frequency detection device is used to directly count and detect high-frequency signals, due to the bandwidth and timing constraints of the internal integrated circuit of the frequency detection device, the signal counting error, frequency For problems such as high power consumption of the detection device, the embodiment of the ...
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The invention relates to a signal frequency detection method and device, and a signal frequency controller. According to the detection method, frequency division processing is carried out on to-be-detected signals, thereby obtaining frequency divided to-be-detected signals with relatively low frequency; when a reference clock signal is in a preset level state, statistics is carried out on the period number of the frequency divided to-be-detected signals, thereby obtaining the statistic period number of the frequency divided to-be-detected signals; the practical frequency of the to-be-detected signals is calculated according to the statistic period number, the duration during which the reference clock signal is in the preset level state and the frequency division times of the to-be-detected signals; and the next-step adjustment direction of the frequency of the output signals of an oscillator can be guided according to the deviation between a practical frequency value and a theoretical value. According to the embodiment of the invention, after frequency reduction is carried out on the to-be-detected signals, the period statistics is carried out on the frequency reduced to-be-detected signals through utilization of the reference clock signal with relatively low frequency; the problem of a count error resulting from directly sampling and counting high-frequency signals is solved, and the signal detection precision is ensured.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a signal frequency detection method, device and signal frequency controller. Background technique [0002] In wireless communication technology, the higher the frequency of communication signals, the wider the available frequency bandwidth and the larger the channel capacity. Correspondingly, the interference between different channels can be reduced or avoided. Therefore, in the process of wireless communication , widely use high-frequency signals as carrier signals. [0003] At present, high-frequency signals are mainly generated by oscillators. Therefore, in a wireless communication system, the performance of various indicators of the oscillator determines the performance of the wireless communication system, but the frequency stability and frequency accuracy of the oscillator are the most influential. Specifically, if the frequency stability of the oscillator ...
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IPC IPC(8): H03L7/18
CPCH03L7/18
Inventor吴彪孙文郑方
Owner上海顺久电子科技有限公司