An active antenna, a standard value acquisition method, and a correction method
An active antenna and antenna technology, which is applied to antennas, antenna arrays, and devices for manufacturing antenna arrays, etc., can solve problems such as the inability to effectively ensure the accuracy of active antenna beams, and achieve the effect of improving accuracy.
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Embodiment 1
[0085] Referring to FIG. 1, FIG. 1 is a schematic block diagram of a microwave system of an active antenna according to an embodiment, including:
[0086]Antenna front 10, a correction coupling channel is integrated in the line source of the antenna front 10;
[0087] a plurality of TR assemblies 20, and a plurality of the TR assemblies 20 are connected to the antenna array 10;
[0088] several sub-array feeder networks 30, the sub-array feeder networks 30 are respectively connected to the TR components 20;
[0089] a switch feeder network 40, the switch feeder network 40 is connected to the sub-array feeder network 30;
[0090] a switch correction network 50, the switch correction network 50 is connected to the switch feeder network 40;
[0091] a plurality of receiving channels 60, the receiving channels 60 are connected to the switch calibration network 50, the receiving channels 60 receive control signals through optical fibers, and send echo sampling signals and working...
Embodiment 2
[0147] Figure 6a) shows a flow chart of the standard value collection for the single-send single-receive working system in the embodiment of the present invention, a method for collecting correction values, and its specific process is: the first step, the radar system is powered on and performs self-checking The second step is to test the amplitude and phase working code values of each TR component 20 of the active antenna under different working modes in a microwave anechoic chamber; the third step is to open the TR components one by one in a microwave anechoic chamber or a similar electromagnetic environment 20. The transmitting channel 70 generates a correction signal, the switch feeder network 40 adopts the signal paths of the transmitting sub-correction mode and the receiving sub-correction mode in FIG. 8 respectively, the switch correction network 50 adopts the signal path of the default state in FIG. 9, and the system uses the switch to correct The network 50 inputs th...
Embodiment 3
[0149] Figure 6b) shows a flow chart of the standard value acquisition for the multi-transmit and multi-receive working system in the embodiment of the present invention, a standard value acquisition method, and its specific process is: the first step, the radar system is powered on and performs self-checking, The switch calibration network 50 adopts the signal paths of the receiving multi-channel calibration mode and the transmitting multi-channel calibration mode in FIG. 9 respectively, and the transceiver channel performs self-calibration after power on; The amplitude and phase working code values of each TR component 20 in the mode; the third step, in a microwave anechoic chamber or a similar electromagnetic environment, turn on the TR components 20 one by one, the transmission channel 70 generates a correction signal, and the switch feeder network 40 adopts Fig. 8 In the signal paths of the transmit main correction mode and the receive main correction mode, the switch co...
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