Optimum design method of circular polarization triangular micro-strip antenna based on characteristic module theory

A microstrip antenna, optimization design technology, applied in the direction of radiating element structure, instruments, adaptive control, etc., can solve the problems of lack of physical concept explanation, cumbersome design method, low efficiency, etc., to achieve high efficiency, simple structure, easy to use processing effect

Active Publication Date: 2013-09-18
BEIHANG UNIV
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Problems solved by technology

However, these design methods are too cumbersome, inefficient, and lack physical concept explanations

Method used

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  • Optimum design method of circular polarization triangular micro-strip antenna based on characteristic module theory
  • Optimum design method of circular polarization triangular micro-strip antenna based on characteristic module theory
  • Optimum design method of circular polarization triangular micro-strip antenna based on characteristic module theory

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Embodiment

[0035] Example: If the resonant frequency f=1.912Ghz of a circularly polarized triangular microstrip antenna is to be formed, a high-frequency dielectric plate with a dielectric constant of 4.4 and a loss tangent of 0.02 is selected as the dielectric layer, and the resonant frequency formula of cavity mode theory The optimized side length a=48mm.

[0036] Step 2: Optimal design of patch gap size;

[0037] Step 201: Apply the characteristic mode theory to the circularly polarized band-slit triangular microstrip antenna, build the circularly polarized microstrip antenna model in Matlab simulation software, and perform grid division on the antenna model, such as figure 2 Shown.

[0038] Step 202: According to the eigenmode theory, extract the impedance matrix of the antenna model obtained in step 201, and extract the eigenmode of the antenna by analyzing the eigenmode of the antenna impedance matrix, and determine the mode distribution of the antenna, including the first-order mode (ie...

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Abstract

The invention discloses an optimum design method of a circular polarization triangular micro-strip antenna based on a characteristic module theory. The optimum design method includes steps of 1 obtaining the optimum side length a of a triangular patch; 2 optimally designing the gap size of the patch; and 3 optimally designing the feed position. The single feed point circular polarization triangular micro-strip antenna is simple in structure and easy to process and has satisfactory impedance and axial ratio bandwidth. The optimum design method can explain the working principle of the circular polarization triangular micro-strip antenna in the aspect of the physical concept, designs the determined antenna feed position and working frequency, and greatly improves the efficiency compared with manual antenna parameter adjustment processing by aid of High Frequency Structure Simulator (HFSS) simulation software.

Description

Technical field [0001] The invention relates to a design method of a circularly polarized triangular microstrip antenna, and more specifically, is a method for optimizing the design of a circularly polarized triangular microstrip antenna based on the characteristic mode theory and the characteristics of the circularly polarized antenna. Background technique [0002] Since the concept of the microstrip antenna was proposed, it has been widely used in satellite communications, navigation and other fields due to its thin profile, light weight, conformal to the carrier, and easy integration with active devices. In particular, circularly polarized microstrip antennas have some significant advantages: incoming waves of any polarization can be received by circularly polarized antennas, and circularly polarized waves radiated by circularly polarized antennas can also be received by arbitrarily polarized antennas. ; The circularly polarized antenna has the orthogonality of the rotation di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q1/38G05B13/04
Inventor 王珺珺李文孙艳超孟宪超
Owner BEIHANG UNIV
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