High-precision log-periodic dipole antenna integral forming method

Abstract

The invention provides a high-precision log-periodic dipole antenna integral forming method. The main structure of a high-precision log-periodic dipole antenna comprises an assembly line with a pentagonal cross section, and multi-layer radiation oscillators which are integrally designed and attached to the assembly line and have different lengths and different cross sections. According to productworking requirements, detailed structural design is carried out through theoretical calculation and simulation, materials meeting task requirements are selected, complex workpiece machining is carriedout by means of various combined machining processes such as numerical control machining, precision wire cutting and deep hole machining, a 3D laser scanner is adopted to perform effective precisionmonitoring on the complex shape of the high-precision log-periodic dipole antenna and screening qualified parts after the machining is completed, and the structural consistency between products is ensured to guarantee requirements for electrical performance of log-periodic antennas after assembly. The high-precision log-periodic dipole antenna integral forming method effectively solves the problems of guaranteeing high phase consistency, wide frequency band, wide directional diagram, high gain and the like between different log-periodic antennas in the L/S/C band, effectively reduces product weight, improves structural strength of products, broadens the application range of measurement and control type log-periodic antennas, and is adapted to different application fields of the products.

Description

technical field [0001] The invention belongs to the technical field of measurement and control logarithmic period antenna development, and specifically relates to a high-precision logarithmic period dipole antenna integral forming method. Background technique [0002] The dipole antenna is an important component of the logarithmic periodic antenna, which is mainly composed of collection lines, radiation dipoles with different cross-sections and lengths, etc., see figure 1 As shown in Fig. 1, the position accuracy of the radiating oscillators directly determines the electrical performance index of the antenna. The common forming processes of radiating vibrator and assembly wire mainly include screwing, welding, riveting, gluing, etc. The disadvantages mainly include low mechanical precision, high weight, and low mechanical reliability. [0003] Measurement and control logarithmic periodic antennas are mainly used for large-angle interferometric measurements. There are two te...

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Problems solved by technology

[0006] The current common radiating oscillator and assembly line forming process is difficult to meet the requirements of high phase and high wide-angle gain of the logarithmic periodic antenna

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