Beam scanning microstrip planar reflection array antenna based on microcrystal material and fabrication method of beam scanning microstrip planar reflection array antenna
A planar reflection array and beam scanning technology, applied in antennas, antenna arrays, and devices for manufacturing antenna arrays, etc., can solve the problems of low application frequency, low DC power consumption, and low power capacity, and achieve large occupied space and communication. The effect of long distance and low loss
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Embodiment 1
[0049] This embodiment provides a beam scanning microstrip planar reflectarray antenna of a microcrystalline material, such as Figure 7 , including a microstrip antenna array, a dielectric plate located below the microstrip antenna array in turn, and a ground plane. The phase-shifting unit connected; the beam scanning device connected to the phase-shifting unit and the feed source connected with the beam scanning device, the feed source is located directly below the microstrip reflective array; the phase-shifting unit is a liquid crystal unit ; The feed source is used to connect the input / output end of the antenna; The beam scanning device is used to provide an external bias voltage of the phase shifting unit.
[0050] The loss angle of the liquid crystal material decreases as the frequency increases and there is no cut-off frequency, which can realize the high-frequency band and low loss of the microstrip planar reflectarray antenna; in addition, the liquid crystal material ha...
Embodiment 2
[0067] On the basis of Embodiment 1, this embodiment further optimizes the design of the antenna element.
[0068] The traditional variable-size resonant unit obtains the required phase shift by generating resonances with different strengths in the operating frequency band. The phase shift characteristic of the unit itself responds nonlinearly to frequency changes, which is a key factor limiting the operating bandwidth. In order to increase the operating bandwidth of the reflection unit, it is necessary to reduce the frequency sensitivity of the reflection characteristic of the unit to obtain a nearly linear phase shift characteristic. In order to reduce the frequency sensitivity of the reflection characteristic of the unit and expand the bandwidth of the reflection unit, this embodiment adopts the multi-resonance unit technology. Such as image 3 , the array element of the microstrip antenna in this embodiment is a multi-resonance structure unit, including 7 reflection unit ...
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