Three-frequency frequency reconfigurable antenna for coplanar waveguide feed
A coplanar waveguide and reconfigured antenna technology, which is applied to antennas, antenna grounding devices, and devices that enable antennas to work in different bands at the same time, can solve problems such as high cost, large antenna interference, and increased equipment volume, and achieve radiation Effects of reduced influence of characteristics, good impedance matching, and high usability
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Embodiment 1
[0034] Example 1: see figure 1 , the three-frequency reconfigurable antenna fed by coplanar waveguide includes an upper metal microstrip, a middle dielectric substrate 2 and a lower back floor 10. The metal microstrip includes a radiating patch 8, and the coplanar waveguide floor 6. Coplanar waveguide feeder 7, matching branch 4 and 4 PIN diodes 1, 3, 5, 9, the coplanar waveguide floor 6 surrounds the radiation patch 8, and the coplanar waveguide floor 6 and the radiation patch are connected by The four PIN diodes 1, 3, 5, and 9 are connected, the coplanar waveguide feed line 7 is located at the central opening of the lower side of the coplanar waveguide floor 6 and is integrated with the radiation patch 8, and the matching branch 4 is integrated with the upper part of the coplanar waveguide floor 6. ; The back floor 10 is a metal coating located on the back of the dielectric substrate 2 corresponding to the lower part of the coplanar waveguide floor 6 and below the coplanar w...
Embodiment 2
[0035] Example 2: see figure 1 and figure 2 , this embodiment is basically the same as the first embodiment, with the following special features: the size of the dielectric substrate (2) is 95mm*110mm*0.8mm, the upper and lower layers are metal coatings, and the material is copper.
Embodiment 3
[0036] Embodiment 3: The three-frequency frequency reconfigurable antenna fed by the coplanar waveguide is divided into three layers: upper, middle and lower layers. upper level as figure 1 As shown, it is composed of metal microstrip antenna and radio frequency PIN diodes 1, 3, 5, 9; the lower layer is as follows figure 2 shown, consisting of a metal backed floor; an intermediate layer such as image 3 As shown, the thickness of the dielectric substrate 2 used in this embodiment is H.
[0037]The antenna has a left-right symmetrical structure. The coplanar waveguide floor 6 and the coplanar waveguide feed line 7 constitute the feeding form of the coplanar waveguide. At the same time, there is a back floor 10 on the other side of the dielectric substrate 2 at the corresponding position, which is made of metal. Plating, the above constitute the feeder structure of the present invention. In the three frequency bands of operation, the characteristic impedance of the feeder is...
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