Optimal Design Method of Circularly Polarized Triangular Microstrip Antenna Based on Eigenmode Theory

A microstrip antenna, triangular technology, applied in the direction of radiating element structure, instrument, 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 process. Effect

Active Publication Date: 2016-01-20
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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  • Optimal Design Method of Circularly Polarized Triangular Microstrip Antenna Based on Eigenmode Theory
  • Optimal Design Method of Circularly Polarized Triangular Microstrip Antenna Based on Eigenmode Theory
  • Optimal Design Method of Circularly Polarized Triangular Microstrip Antenna Based on Eigenmode Theory

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Embodiment

[0035] Embodiment: To form the resonant frequency f=1.912Ghz of the circularly polarized triangular microstrip antenna, the selected dielectric constant is 4.4, and the high-frequency dielectric plate whose loss tangent is 0.02 is the dielectric layer, and the resonant frequency formula of the cavity mode theory The optimized side length a=48mm is obtained.

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

[0037] Step 201: Apply the eigenmode theory to the circularly polarized triangular microstrip antenna with slots, build a circularly polarized microstrip antenna model in the Matlab simulation software, and mesh the antenna model, as shown in figure 2 shown.

[0038] Step 202: According to the eigenmode theory, extract the impedance matrix of the antenna model obtained in step 201, analyze the eigenmode of the antenna impedance matrix, extract the eigenmode of the antenna, and determine the mode distribution of the antenna, including the first-order mode (ie Mode1 ...

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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, more specifically, a method for optimizing the design of a circularly polarized triangular microstrip antenna based on the eigenmode theory combined with the characteristics of the circularly polarized antenna. Background technique [0002] Since the concept of microstrip antenna was put forward, it has been widely used in satellite communication, navigation and other fields because of its thin profile, light weight, conformal shape with 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 antennas of arbitrary polarization. ; Circularly polarized antennas have the orthogonality of rotation,...

Claims

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Application Information

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Patent Type & Authority Patents(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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