Mirror image calibration device and method with link adaptivity
An adaptive, mirroring technology, applied in transmission monitoring, electrical components, transmission systems, etc., can solve problems such as insufficient dynamic range of power detection, difference in link gain, and inability to quickly transplant, and achieve easy transplant applications and universal adaptation. sexual effect
Pending Publication Date: 2018-06-05
SUNWAVE COMM
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Problems solved by technology
However, in large-scale applications, due to the difference in link gain caused by the frequency characteristics and temperature characteristics of RF devices, it will lead to problems such as insufficient power detection dynamic range and device receiving power overflow, which will eventually affect the quadrature adjustment calibration effect and signal quality. System indicators
Also for different design applications, it is often necessary to recalibrate the optimal calibration gain of the link, which cannot be quickly transplanted and increases manpower input
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[0025] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and examples.
[0026] figure 1 It is a schematic structural diagram of an image calibration device with link adaptability in the present invention.
[0027] Such as figure 1 As shown, the device mainly includes a signal generation unit, a gain adjustment unit, a link to be calibrated, a power detection unit, a micro control unit MCU, and an image calibration module. The signal generation unit, the gain adjustment unit, the link to be calibrated, and the power detection unit are connected in sequence, and the micro control unit MCU is respectively connected with the signal generation unit, the gain adjustment unit, the image calibration module, and the power detection unit.
[0028] figure 1 When the device works, it includes two processes of link pre-calibration an...
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The invention provides a mirror image calibration device with link adaptivity. The mirror image calibration device comprises a micro control unit MCU, a signal generation unit, a gain adjustment unit,a to-be-calibrated link, a mirror image calibration module and a power detection unit, wherein the signal generation unit, the gain adjustment unit, the to-be-calibrated link and the power detectionunit are connected in sequence, and the micro control unit MCU is separately connected with the signal generation unit, the gain adjustment unit, the mirror image calibration module and the power detection unit. The invention further provides an image calibration method with link adaptivity, which makes the existing image calibration methods more universally applicable. For links with different rated gains and links with changed gains due to temperature characteristics or frequency characteristics, the links can be automatically adjusted to an optimal state suitable for mirror image calibration. By adoption of the mirror image calibration device and method provided by the invention, the adaptability and the portability of a mirror image calibration function can be obviously improved, the degree of integration is improved, and the development cycle is accelerated.
Description
technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a mirror calibration device and method with link adaptability. Background technique [0002] Since the zero-IF transceiver directly modulates or demodulates the baseband signal without passing through the intermediate frequency, it is beneficial to the miniaturization and low cost of the system; Power consumption and reduce the chance of external interference to radio frequency signals; so zero-IF transceivers are widely used. [0003] Due to the unique architecture of the zero-IF transceiver, it was found in the application process that the quality of the main signal was degraded due to the leakage of the local oscillator, and the phase and amplitude imbalance of the I-channel and Q-channel data, which affected the system indicators. In order to solve these problems, there are currently many zero-IF transceiver image suppression schemes, and they have goo...
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IPC IPC(8): H04B17/21H04B17/13H04B17/11H04B17/00
CPCH04B17/0085H04B17/11H04B17/13H04B17/21
Inventor 简托沈滨罗宝填
Owner SUNWAVE COMM