Miniature planer ultra-wide-band antenna

Abstract

The invention relates to a miniature planer ultra-wide-band antenna. The miniature planer ultra-wide-band antenna comprises a dielectric substrate, a gap, a micro-strip feeder and an SMA radio frequency connector, wherein the dielectric substrate is an FR4 sheet material with the relative dielectric constant of 4.4; the gap is a circular flat groove with the diameter of 20 to 24 mm remaining after a circular metal layer on the upper surface of the dielectric substrate is removed; a broken corner is formed in the horizontal direction of a circle, the peak of the broken corner is on the horizontal diameter of the circle, the semi-diameter a of the broken corner is equal to 11 to 15 mm, and the angle theta of the broken corner is equal to 13 to 17 degrees; a rectangular blind opening is formed in the lower end of the circle downwards along the vertical diameter; the distance between the intersection point of the rectangular blind opening and the circle and the bottom end face of the dielectric substrate is 11 mm; a strip metal micro-strip feeder is arranged on a vertical center line on the other surface of the dielectric substrate from the bottom end face upwards; the size of the micro-strip feeder meets the requirement of 50 Omega; the SMA radio frequency connector is fixed on the micro-strip feeder; and a metal layer of the dielectric substrate is grounded. The miniature planer ultra-wide-band antenna has compact in structure and small in size, is easy to microwave integration, meets the requirement of an ultra-wide-band wireless communication system for antenna radiation characteristic, and can serve as a transceiving antenna of a miniature ultra-wide-band system.

Description

technical field [0001] The invention relates to an ultra-wideband antenna, in particular to a small planar ultra-wideband antenna. Background technique [0002] In recent years, people's research on ultra-wideband technology has become more and more extensive and in-depth, mainly because this system has a wide frequency range from 3.1GHz to 10.6GHz, and can obtain large data transmission within a short distance (10 meters) At the same time, due to its own low power consumption and high capacity characteristics, it has its own characteristics and advantages compared with practical Bluetooth technology and IEEE 802.11 / a / b / g (54 Mbps / 11 Mbps / 22 Mbps) . [0003] People have designed a variety of antennas suitable for this frequency range, but most of them are three-dimensional antennas, which are relatively difficult to design and manufacture, and will occupy a large space in practice, and it is difficult to realize the integration with small systems. integrated design. Cont...

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Problems solved by technology

[0003] People have designed a variety of antennas suitable for this frequency range, but most of them are three-dimensional antennas, which are relatively difficult to design and manufacture, and will occupy a large space in practice, and it is difficult to realize the integration with small systems. integrated design

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