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

Inactive Publication Date: 2018-12-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

More importantly, since these resonant structures are all changes to the structure of the antenna radiation unit, it is difficult to apply or transplant to other different radiation structures in other UWB systems

Method used

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  • A Four-mode Resonator Loaded with High Resistance Line
  • A Four-mode Resonator Loaded with High Resistance Line
  • A Four-mode Resonator Loaded with High Resistance Line

Examples

Experimental program
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Effect test

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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Abstract

The invention discloses a four-mode resonator loaded with high resistance lines, and relates to the field of microwave passive devices. The resonator is composed of a dual-mode resonator and two symmetrically distributed high-impedance lines connected to the transmission line, wherein the dual-mode resonator is a folded half-wavelength resonator, and the two arms of the metal patch are folded inward , there is a via hole at the center of the bottom of the patch, and two high-impedance lines are symmetrically attached to both sides of the dual-mode resonator and connected to the transmission line. All the above structures are printed on the front side of the dielectric substrate, and the backside of the substrate is completely covered with metal. The resonator overcomes the need for multiple resonators in the existing ultra-wideband notch devices to achieve multiple notch stop bands, frequency selectivity and notch bandwidth and other performance needs to be improved, and the resonant structure is difficult to apply or transplant to other different radiating units Insufficient such as UWB system.

Description

technical field [0001] The invention relates to the field of microwave passive devices, in particular to a double-mode resonator based on half-wavelength. Background technique [0002] Ultra-wideband (UWB) wireless communication systems have attracted widespread attention. UWB antennas and filters, as the key components of UWB wireless communication systems, play a vital role in UWB wireless communication systems. However, there are still some problems in the practical application of UWB antennas. One of them is that some existing wireless communication systems have occupied some frequency bands in the UWB range, such as WiMAX (3.3-3.8GHz), IEEE 802.11a (5.15- 5.35GHz&5.725~5.825GHz) or X-band satellite communication service (7.25~8.395GHz), etc. Therefore, in order to eliminate the influence of these wireless systems on itself, the UWB system needs UWB microwave passive devices with notch characteristics. Such as antennas, filters, etc. [0003] There are currently some ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/00H01P7/08
CPCH01P7/00H01P7/08
Inventor 郭映江唐小宏李文迅蒋远灿叶晶晶田川蔡宗棋罗鸣闫腾飞卢頔
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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