All-in-one vehicle-mounted antenna test system and test method

Abstract

The invention discloses an all-in-one vehicle-mounted antenna test system and test method. The test system comprises a computer, a network analyzer, a programmable RF switch, a DC bias tee, a programmable multimeter, a DC power supply, a GPIB-USB converter, a reference antenna and a shielding box. The network analyzer is used to test a voltage standing wave ratio and a power transmission coefficient of the antenna and the antenna to be tested is placed in the shielding box. The computer is connected with the network analyzer and the programmable multimeter separately through the GPIB-USB converter and is connected with the programmable RF switch. The network analyzer is connected with the reference antenna and the programmable RF switch, separately. The DC power supply is connected to theprogrammable multimeter. The programmable multimeter is connected to the DC bias tee. The programmable RF switch is separately connected to a plurality of ports of the antenna to be tested in the shielding box or connected to a navigation antenna containing a low noise amplifier through the DC bias tee. The test data are all stored, and the traceability of the test data can be realized. The test speed is high.

Description

technical field [0001] The invention relates to a vehicle-mounted antenna testing system and a testing method, in particular to an all-in-one vehicle-mounted antenna testing system and a testing method. Background technique [0002] Most of the current vehicle-mounted antennas are complexes of several antennas, that is, antennas with multiple functions are integrated together to meet user requirements. Such as including navigation antenna, mobile communication antenna, broadcast antenna, 4G LTE MIMO antenna, WiFi antenna. Since a vehicle antenna is integrated with two, three, or even four antennas, and navigation antennas and broadcast antennas are generally active antennas, which include amplifiers, there are many parameters to be tested for the entire antenna, such as the antenna Multiple parameters such as voltage standing wave ratio, transmission power, current consumption and voltage. [0003] To complete the test of multi-functional vehicle antennas, the test network...

AI Technical Summary

Problems solved by technology

[0003] To complete the test of multi-functional vehicle antennas, the test network analyzer of the test system needs to have multiple ports, such as four ports, but even with a four-port network analyzer, it is difficult to test up to four or more integrated vehicle antennas , at the same time, the cost of the multi-port network analyzer is also very high, and the test data cannot be saved only by using the network analyzer, so as to realize the traceability of the data

[0004] Some test systems also use mechanical switches to achieve multi-port testing. This approach brings about slow test speed and the problem that the antenna to be tested is easily missed during the test.

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