Broadband near-field measurement system and method for fast calibration of amplitude and phase of radio frequency link
A radio frequency link and broadband technology, applied in the field of broadband near-field measurement systems, can solve the problem of slow scanning data transmission rate, and achieve the effects of fast data transmission speed, simple system structure, and shortened measurement time.
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[0034] The method and apparatus of the amplitude phase rapid calibration provided by the present invention not only for the phase-controlled array radar, but can be a radio frequency link and antenna that require calibration of any amplitude or phase. Next, a further detailed description of the implementation of the technical solution in conjunction with the drawings:
[0035] A broadband near field measuring circuit for amplitude phase rapid calibration of RF links, such as figure 1As shown, including a broadband phase lock ring 1, a single knife double-throw switch, a multiplier 3, an amplifier 4, a filter 5, a toner failure unit 6, a microcontrol unit 7, a power detector 8, a strip line orientation coupler 9 , Mixer 10, analog-to-digital converter 11, field programmable array 12, host machine 13, power divider 14, transmit antenna, and link 15, receive antennas and links 16.
[0036] The circuit has the following functions:
[0037] First, realize the frequency source of broadb...
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