Millimeter wave miniaturized multichannel transmitting-receiving subassembly and its phase compensation process
A transceiver component and phase compensation technology, applied in radio wave measurement systems, instruments, etc., can solve the problems of unguaranteed phase consistency, no implementation method, poor phase modulation accuracy, etc., to achieve simple and easy operation of phase compensation method, and improve power Combination efficiency, the effect of increasing the effective radiation gain
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[0046] Example 1
[0047] Taking the phase error of the transmitting channel of 95 degrees as an example, the operation steps of the phase error compensation of the transceiver component proposed by the present invention are introduced:
[0048] 1. Calculate the phase relationship between the transmitting channels as zero degree according to the requirements of the radar device;
[0049] 2. Use a vector network analyzer to measure the phase error of the transmitting channel, and get the phase error θ between the two transmitting channels of the transceiver component when the operating frequency is 33GHz 1 It is 95 degrees.
[0050] 3. Choose a regular rectangular parallelepiped ceramic medium to load, the thickness is 0.5 mm, the width is the same as the width of the shielding cavity, and the side wall is fully in contact with the metal side wall of the shielding cavity. The height of the air shielding cavity is 3 mm, which is convenient for calculation and selection of a rectangu...
Example Embodiment
[0056] Example 2
[0057] The phase error of the transmitting channel is 50 degrees as an example to introduce the phase error compensation operation steps of the transceiver module proposed in the present invention. The specific operation steps are the same as those in Embodiment 1, except that the length of the compensation section is different. Assuming phase error θ 2 Is 50 degrees, when the operating frequency is 33GHz λ 0 9.09mm, equivalent dielectric constant ε re Is 1.583, substituting these known parameters into formula (1), we can get
[0058] (4)
[0059] Perform phase compensation according to the operating steps in Example 1. Figure 4-2 shows the measured results of the phase error before and after compensation using the medium loading microstrip line method proposed by the present invention when the channel phase error is 50 degrees. The operating frequency after compensation is 33 GHz. The channel phase error is 2.21 degrees.
Example Embodiment
[0060] Example 3
[0061] Taking the phase error of the transmitting channel of 35 degrees as an example to introduce the phase error compensation operation steps of the transceiver module proposed in the present invention, the specific operation steps are the same as those in Embodiment 1, except that the length of the compensation section is different. Assuming phase error θ 3 Is 35 degrees, when the operating frequency is 33GHz λ 0 Is 8.57 mm, equivalent dielectric constant ε re Is 1.583, substituting these known parameters into formula (1), we can get
[0062] (5)
[0063] Perform phase compensation according to the operating steps in Example 1. Figure 4-3 shows the measured results of the phase error before and after compensation using the medium loading microstrip line method proposed by the present invention when the channel phase error is 35 degrees. The operating frequency after compensation is 33 GHz. The channel phase error is 4.57 degrees.
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