An error calibration method and device for a tuned circuit
A tuning circuit and error calibration technology, applied in the direction of electrical components, automatic power control, etc., can solve problems such as difficulty in meeting high-end application requirements, poor VCO phase noise index, etc., achieve strong operability and scalability, and reduce costs , The effect of simplifying the calibration process
Active Publication Date: 2018-08-03
DATANG LINKTESTER TECH
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Problems solved by technology
However, due to the relatively poor phase noise index of broadband VCO, it is difficult to meet the requirements of high-end applications
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[0045] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0046] In order to solve the problem that the traditional VCO's phase noise index is relatively poor and it is difficult to meet the requirements of high-end applications, the yttrium iron garnet (YIG, yttrium iron garnet) tuned oscillator (YTO, YIG-tuned oscillator) came into being.
[0047] YTO achieves tuning in a wide range by changing the size of the bias magnetic field of the resonant ball, and it has a high Q value (Q value is also called the quality factor of the inductance, which is the main parameter to measure the inductance device. It refers to the inductor When working under an AC voltage of a certain frequency, the ratio of the inductive reactance presented to its equivalent loss resistance. The higher the Q value, th...
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An embodiment of the present invention provides a method and device for error calibration of a tuned circuit. The method includes: obtaining the test tuning frequency, tuning voltage, and preset sensitivity coefficient of the tuning circuit; using the test tuning frequency, tuning voltage, and preset sensitivity coefficient; The resistance error value is obtained by using the preset sensitivity coefficient; the modified tuning frequency is obtained by using the resistance error value, the tuning voltage and the preset sensitivity coefficient; and the tuning circuit is configured by using the modified tuning frequency. The embodiment of the present invention is used to simplify the calibration process of the tuning circuit, reduce human participation, get rid of the method of changing the hardware resistance to compensate the circuit, and compensate the error of the tuning circuit by changing the software calculation parameters, which not only reduces the cost, but also has a strong Operability and scalability.
Description
technical field [0001] The invention relates to the technical field of mobile communication, in particular to an error calibration method for a tuned circuit and an error calibration device for a tuned circuit. Background technique [0002] For an analog receiver, the frequency synthesis source is its heart, which determines the spectral purity of the analog receiver and determines the error vector magnitude (EVM, Error Vector Magnitude) and adjacent channel leakage power ratio (ACPR) of the analog receiver. , Adjacent Channel Power Ratio), bit error rate (BER, Bit Error Rate) and other indicators. [0003] The spectral purity of frequency synthesis sources is usually measured by phase noise and spurious indicators. Phase-locked loop (PLL, PhaseLocked Loop) is one of the most important technologies to realize high-frequency frequency synthesis source. As the application frequency becomes higher and higher, and the bandwidth becomes wider and wider, the great challenge broug...
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IPC IPC(8): H03L7/08
Inventor 刘浩周游陈建永
Owner DATANG LINKTESTER TECH