Detection device and method for power and standing wave ratio
A detection device and detection method technology, which are applied to measurement devices, electric power measurement, measurement of electric variables and other directions through the application of digital technology, can solve problems such as difficulty in implementation, and achieve the effects of small package, reduced relative error, and low cost
Inactive Publication Date: 2011-02-09
WUHAN FINGU ELECTRONICS TECH
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[0007] For applications where it is necessary to accurately detect the VSWR and the real power under different modulation modes, for example: some products require reporting the real average power in watts, at -30℃~+ The error of the power in the temperature range of 75°C is less than ±10%, and the existing above-mentioned scheme is difficult to realize simply
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[0038] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments, but these embodiments should not be construed as limiting the present invention.
[0039] The present invention provides a detection device of power and standing wave ratio independent of the signal modulation mode, see Figure 4 As shown, the device includes: a detection switching unit: used to detect one of the two RF signals introduced by the forward and reverse couplers, and switch the detection by controlling the single-pole double-throw switch when a trigger signal is received. channel, and delay to eliminate crosstalk, each radio frequency signal is detected and simultaneously obtained the detection output voltage and feedback voltage; trigger counting unit: used to regularly send trigger signals to the detection switching unit, and count the number of times the trigger signal is sent, Until the number of times reaches the preset threshol...
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The invention discloses a detection device for power and standing wave ratio and a method thereof. The device comprises a detection switch unit, a triggering and counting unit, a signal conversion unit, a power and standing wave ratio detecting unit; wherein, the detection switch unit is used for respectively detecting two paths of radio-frequency signals, switching over detection pathways by controlling a single-pole double-throw switch when receiving trigger signals, converting the trigger signals into output voltage signals after detection; the triggering and counting unit is used for periodically sending and counting the trigger signals till a preset threshold value is reached; the signal conversion unit is used for converting the output voltage signals of a detector into direct current voltage signals and converting the direct current voltage signals into digital signals by the timing sampling of an AD convertor; the power and standing wave ratio detecting unit is used for calling a power detection subprogram to detect every path of digital signals to obtain corresponding power values; the obtained power values are averaged, from which the standing wave specific valve is obtained and used as the valve reported to the leadership. The invention can be applied to the detection of the power and the standing wave ratio in a wireless communication system in any signal modulation module, has low cost and high accuracy.
Description
technical field [0001] The invention relates to the technical field of wireless communication, in particular to a detection device and method for power and standing wave ratio. Background technique [0002] In the field of wireless communication, the matching between the antenna feeder system and the power transmission system of the base station directly affects the quality of signal transmission and reception and the safety of equipment. key indicator. [0003] In practical applications, the standing wave ratio is detected by detecting the coupled forward and reverse power signals to obtain the power value or power ratio in the two directions, thereby obtaining the standing wave ratio. There are generally two implementation schemes for detecting standing wave ratio: one is a pure analog circuit scheme, the implementation circuit of this scheme is relatively complicated, and there are common problems of low detection accuracy and poor anti-interference performance; the othe...
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IPC IPC(8): G01R21/133G01R27/06
Inventor 李军民
Owner WUHAN FINGU ELECTRONICS TECH