A Four-mode Resonator Loaded with High Resistance Line
A dual-mode resonator and resonator technology, applied in resonators, waveguide devices, circuits, etc., can solve problems such as difficult application or transplantation, and achieve the effects of simple structure, high suppression level, and increased bandwidth
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Embodiment 1
[0028] Embodiment 1: UWB notch antenna
[0029] In order to further illustrate the practicability of the above solution, a specific example is given below, which is a high-selectivity double-notch ultra-wideband planar monopole antenna. The dielectric substrate is RT / Duorid 4350 substrate with a thickness of 34mm×25mm×0.508mm and a dielectric constant of 3.48. The structure diagram of the antenna is shown in Figure 6 As shown in (b), the antenna is based on Figure 6 (a) Design. Simulation results such as Figure 7 As shown, it can be seen that the antenna produces two notch stop bands at 4.77-5.35GHz and 7.26-8.35GHz. Except for the two notch stop bands, the return loss S 11 It is still less than -10dB in 3.2-12GHz, and the reflection coefficient in the passband of 10.5-13GHz has been significantly improved.
Embodiment 2
[0030] Embodiment 2: UWB notch filter
[0031] Based on conventional UWB filters (see Figure 8 (a) and (b)), load the novel UWB filter behind the resonator of the present invention (see Figure 8 (c)). Figure 8 The circuit shown in (c) produces a UWB response with two notches. where each notch has 2 transmission zeros, such as Figure 9 shown.
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