A loop multi-notch ultra-wideband antenna
An ultra-wideband antenna and loop technology, which is applied in loop antennas, antennas, antenna grounding devices, etc., can solve problems such as inconvenient debugging and production, increased antenna volume, electromagnetic wave leakage, etc., to reduce design costs, reduce overall volume, and widen impedance The effect of bandwidth
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[0033] Implementation mode 1:
[0034] Such as figure 1 , figure 2 with image 3 Shown. It is composed of a slotted tuning microstrip line 101, a ring radiating unit 102, a coplanar waveguide ground plane 103, a coplanar waveguide feeding signal strip line 104 and a dielectric substrate 105. The lower end of the coplanar waveguide feeding signal strip line 104 of the antenna is connected to the SMA inner conductor. The outer conductor of the SMA is connected to the coplanar waveguide ground plane 103. according to figure 1 , figure 2 with image 3 The structure shown can satisfy its ultra-wideband operating characteristics and multiple notch characteristics as long as the appropriate size is selected.
[0035] Design of antenna parameters:
[0036] 1. Selection of dielectric substrate
[0037] The dielectric constant of the dielectric substrate is generally between 2 and 9.8. The polytetrafluoroethylene board with a dielectric constant of 2.65 used in the present invention has a ...
Example Embodiment
[0045] Implementation mode 2:
[0046] Such as Figure 4 As shown, two arc-shaped corners are cut off at the part of the ground plane of the coplanar waveguide near the ring radiating unit, which can not only improve the coupling capacitance and coupling inductance between the ring radiating unit and the ground plane of the coplanar waveguide, but also increase the antenna Impedance bandwidth. The antenna is composed of a tuned microstrip line 201, a ring radiating unit 202, a coplanar waveguide ground plane 203, a coplanar waveguide feed signal strip line 204 and a dielectric substrate. The lower end of the coplanar waveguide feeding signal strip line 204 of the antenna is connected to the SMA inner conductor. The outer conductor of the SMA is connected to the coplanar waveguide ground plane 203. In order to achieve the notch characteristics, the slotted tuning microstrip line inside the ring radiator can be replaced by a tuning microstrip line, which can still meet the needs ...
Example Embodiment
[0047] Implementation mode 3:
[0048] Such as Figure 5 As shown, the slotted tuned microstrip line and the tuned microstrip line are removed, and the antenna can be used as an ultra-wideband antenna. The antenna consists of a ring radiating unit 302, a coplanar waveguide ground plane 303, and a coplanar waveguide feed signal strip line 304 And the dielectric substrate composition. The lower end of the coplanar waveguide feeding signal strip line 304 of the antenna is connected to the SMA inner conductor. The outer conductor of the SMA is connected to the coplanar waveguide ground plane 303. The structure is simple, easy to design and implement, and easy to integrate with microwave integrated circuits.
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