一种自动调谐高频车载电小环天线设计

doi:10.16180/j.cnki.issn1007-7820.2023.06.003

Abstract

Abstract:

For the problem that the shortwave communication antenna is hard to realize broadband operation and inconvenient to transport on a set of equipment, an auto-tuning small loop antenna suitable for high frequency communication of near vertical incident skywave technique is proposed. The antenna is installed on the top of the vehicle, and the main body is composed of coupling loop, radiation loop and auto-tuning unit. Two different tuning methods are skillfully introduced, and the two matching networks are integrated and automatically controlled. The antenna has the advantages of simple physical structure, convenient carrying and high radiation efficiency. The simulation and test results show that the standing wave ratio of the loop antenna is less than 2 in the whole high frequency band from 3 to 30 MHz, the maximum gain of the loop antenna at 25 MHz can reach 2.7 dBi, and the maximum radial direction is in the vertical, which meets the requirements of shortwave near vertical incidence skywave communication, and becomes an important part of the high frequency communication system.

Key words: broadband, near vertical incident skywave, auto-tuning, small loop antenna, coupled-fed, matching network, integrated control

CLC Number:

TN823

ZHAN Fei,YAN Yongmou. Design of A High Frequency Vehicle Small Loop Antenna with Auto-Tuning Characteristic[J].Electronic Science and Technology, 2023, 36(6): 16-20.

Figures/Tables 8

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Design of A High Frequency Vehicle Small Loop Antenna with Auto-Tuning Characteristic

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