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Four-mode resonator loaded with high-impedance lines

A dual-mode resonator, resonator technology, applied in resonators, waveguide devices, electrical components, etc., can solve problems such as difficult application or transplantation, and achieve the effects of simple structure, high suppression level, and improved bandwidth

Inactive Publication Date: 2016-07-13
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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  • Four-mode resonator loaded with high-impedance lines
  • Four-mode resonator loaded with high-impedance lines
  • Four-mode resonator loaded with high-impedance lines

Examples

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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 uses RT / Duorid4350 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-impedance 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 with a transmission line, wherein the dual-mode resonator is a folding half-wave resonator, the two arms of a metal patch of the resonator are folded inward, the bottom center of the patch is provided with a via hole, and the two high-impedance lines are attached to the two sides of the dual-mode resonator symmetrically and connected with the transmission line. All the structures are printed on the front of a dielectric substrate, and the back of the substrate is completely covered by metal. The resonator overcomes the following defects: the existing ultra-wideband notch device needs multiple resonators to realize multiple notch stop bands, performances such as frequency selectivity and notch bandwidth need improvement, and the resonance structure can hardly apply to or be transplanted to different UWB systems of other radiation units.

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), IEEE802.11a (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 s...

Claims

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Application Information

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Patent Type & Authority Applications(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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