Millimeter wave integration multichannel active transmitting antenna and phase compensation method thereof
A phase compensation and transmitting antenna technology, applied in antennas, antenna arrays, electrical components and other directions, can solve the problems of poor phase modulation accuracy, increased volume, large phase error of transmitted signals, etc., to improve the effective radiation gain of the antenna, and the method is simple and convenient Easy to operate and improve efficiency
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Examples
Embodiment 1
[0048] Taking the phase error of 95 degrees as an example to introduce the operation steps of the active transmitting antenna phase error compensation proposed by the present invention:
[0049] 1. Use a vector network analyzer to measure the phase error of the transmitting channel, so as to obtain the phase error θ between the two channels of the active transmitting antenna when the operating frequency is 33GHz 1 is 95 degrees.
[0050] 2. Choose a regular cuboid ceramic medium to load, the thickness is 0.5 mm, the width is equal to that of the shielding cavity and the side wall is in full 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 cuboid structure without a transition section . At this time, the equivalent dielectric constant ε of the structure re is 1.583.
[0051] 3. Determine the length l of the phase compensation section according to formula (1) 1 , p...
Embodiment 2
[0057] Taking the phase error of 50 degrees as an example to introduce the phase error compensation operation steps of the active transmitting antenna proposed by 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. Suppose the phase error θ 2 λ is 50 degrees and the operating frequency is 33GHz 0 9.09 mm, equivalent dielectric constant ε re is 1.583, and these known parameters are substituted into formula (1) to get
[0058] (4)
[0059] Perform phase compensation according to the operation steps in Embodiment 1, Figure 4-2 It is the actual measurement result of the phase error before and after compensation by using the medium-loaded microstrip line method proposed by the present invention when the channel phase error is 50 degrees. After compensation, the phase error of the channel with an operating frequency of 33 GHz is 2.21 degrees.
Embodiment 3
[0061] Taking the phase error of 35 degrees as an example to introduce the phase error compensation operation steps of the active transmitting antenna proposed by 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. Suppose the phase error θ 3 is 35 degrees, when the operating frequency is 33GHz λ 0 is 8.57 mm, the equivalent dielectric constant ε re is 1.583, and these known parameters are substituted into formula (1) to get
[0062] (5)
[0063] Perform phase compensation according to the operation steps in Embodiment 1, Figure 4-3 It is the actual measurement result of the phase error before and after compensation using the medium-loaded microstrip line method proposed by the present invention when the channel phase error is 35 degrees. After compensation, the phase error of the channel with an operating frequency of 33 GHz is 4.57 degrees.
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Description
Claims
Application Information
- IPC
- H01Q23/00; H01Q21/00; H01Q13/00; H01Q3/34
- Inventors
- 孙厚军; 于伟华