Novel defected ground structure antenna of U-shaped feeder line resonance

Abstract

The present invention discloses a novel defected ground structure antenna of U-shaped feeder line resonance. The novel defected ground structure antenna comprises a dielectric substrate (1), a radiation unit (2), a groove shaped like a Chinese character gong on the radiation unit, a microstrip transmission line (4), looped defected ground structures (5), a grounding surface (6) and a U-shaped feeder line resonant unit (7). The radiation unit and the microstrip transmission line are printed on the upper surface of the dielectric substrate, the radiation unit is located in the middle part of the dielectric substrate, and the looped defected ground structures (5) are located at the two sides of the microstrip transmission line and are etched on a grounding plate. The groove shaped like the Chinese character gong is slotted on the radiation unit, and a U-shaped feeder line structure is etched on the microstrip transmission line.

Description

technical field [0001] The invention relates to an antenna, specifically designing a novel U-shaped feeder resonant defect ground structure antenna Background technique [0002] Since the U.S. Federal Communications Commission (Federal Communications Commission) allowed the commercial use of the 3.1-10.6GHz frequency band, UWB technology has received wider attention in the academic and commercial fields, and at the same time it has also put forward higher requirements for UWB antennas, making them more efficient than traditional antennas. The design of the antenna is more challenging, mainly in the following aspects: In addition to having an ultra-wide operating frequency band (generally 3.1GHz-10.6GHz), the antenna must also be able to maintain a compact size, light weight, and easy integration with planar large-scale circuits. integrated. [0003] However, the frequency band occupied by the current ultra-wideband communication and the wireless local area network share a p...

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Problems solved by technology

[0003] However, the frequency band occupied by the current ultra-wideband communication and the wireless local area network share a part, so it is necessary to design an antenna that can reduce the interference to the wireless local area network, and the design of an ultra-wideband antenna with dual notch characteristics has become a current research hotspot

If there is no proper design to suppress harmonic resonance and spurious emission, the antenna will cause electromagnetic interference to nearby equipment, endangering the normal operation of the system itself and adjacent systems, especially causing interference to the currently used LAN system

Adding a filter is the most commonly used method to solve such problems, but it often causes mismatch between the antenna and the microwave circuit, and even reduces the overall performance of the system. Therefore, a new type of U-shaped feeder resonance with double notch characteristics is designed. The defective ground structure antenna is one of the important methods to solve this problem, and at the same time solve the problem that the structure and process of the current antenna are relatively complicated

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