Oval intersecting nesting multi-loop recursive microstrip antenna for compass system

Abstract

The invention relates to a microstrip antenna of a loop-shaped structure, in particular to an oval intersecting nesting multi-loop recursive microstrip antenna for a compass system. The oval intersecting nesting multi-loop recursive microstrip antenna for the compass system is provided with a substrate. Two surfaces of the substrate are coated with good conductors. The good conductors located on the upper surface are processed to be an oval intersecting nesting multi-loop recursive radiating adhesive sheet. An outer loop of the multi-loop recursive radiating adhesive sheet is composed of N oval arcs in an intersecting mode. The focal points of the oval arcs are located on radiating lines of i*360 degrees / N, each oval arc has a long axis and a short axis, and the long axes and the short axes of the oval arcs which form outer contours are identical. A series of recursive nesting contours of the same shape are formed in a shrinking mode according to a ratio eta of the oval short axes of two adjacent loops in the same composing mode. The eta is 0.2 to 0.9 and recursive times are 3 to 11. The conductors between uneven number times and even number times are eliminated, so that a series of gap nesting loops with contour sizes reduced in a recursive mode are formed. The good conductors with the widths between 0.5mm to 2mmare reserved on the ray portion of i*360 degrees / N of the gap nesting loops.

Description

technical field [0001] The invention relates to a ring-shaped microstrip antenna, in particular to an elliptical intersecting nested multi-ring recursive microstrip antenna for a Beidou system. Background technique [0002] China Beidou Satellite Navigation System (COMPASS, Chinese transliteration name BeiDou), as a global satellite navigation system independently developed and operated by China, is an important spatial information infrastructure that the country is building, and can be widely used in various fields of the current economic society. In 2003, my country's Beidou first-generation satellite was completed and opened for operation. In 2007, my country launched the first Beidou second-generation satellite. In just a few years, the Beidou navigation system has developed rapidly. Especially after 2010, my country launched several Beidou satellites, and at 0:12 on February 25, 2012, Beijing time, China used the "Long March 3A" carrier rocket at the Xichang Satellite L...

AI Technical Summary

Problems solved by technology

At present, the application of the fractal loop antenna with a novel nested structure to the Beidou system has not been reported

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