Bandwidth miniaturization conformal monopole antenna

Abstract

The invention discloses a bandwidth miniaturization conformal monopole antenna. The antenna is characterized in that a microstrip loading unit (2) of the antenna, a microstrip monopole radiating unit (3) of the antenna and a microstrip impedance transition section (4) of the antenna are connected sequentially and printed on a thin and flexible printed circuit board (5), the printed circuit board (5) is bent and then adhered on a surface of a medium cylinder (8) to form a cylindrical conformal radiating body of the antenna, a round metal disk (1) is installed at the top end of the cylindrical conformal radiating body and connected with the microstrip loading unit (2) to achieve miniaturization of the antenna, a metal sleeve (6) is sleeved outside the cylindrical conformal radiating body to achieve bandwidth characteristics of the antenna, the bottom of the cylindrical conformal radiating body is connected with a metal grounding plate (7), and the antenna is processed according to a photo-etching technology, so that the processing precision is high, the influence of processing errors on antenna performance is greatly reduced, the radiation efficiency of the antenna is improved, and the weight of the antenna is lightened. Simultaneously, the mechanical processing amount in antenna manufacturing is reduced, and the time and the cost for manufacturing the antenna are reduced.

Description

technical field [0001] The invention relates to a broadband miniaturized conformal monopole antenna, which belongs to the field of antennas in radio equipment. Background technique [0002] Antenna is a key component in radio equipment. It undertakes the function of energy conversion and directional radiation (or reception), directly determines the efficiency of electromagnetic energy transmission in space, and affects the working effect of the entire wireless system. With the rapid development of modern communication technology, many special and harsh requirements are put forward for the antenna performance. For example, in high-speed motion communications such as ships and vehicles, antennas are required to have broadband, miniaturization, no impact on aerodynamics, simple debugging, and easy processing and production. [0003] Monopole antenna is a kind of antenna with excellent performance and wide application. It has the advantages of simple structure and omnidirection...

AI Technical Summary

Problems solved by technology

However, these monopole antennas all use thin straight metal rods as the radiating element, and the overall antenna is a metal structure with large size and weight, and is manufactured by metal machining, resulting in high processing costs; "IEEE Transactions on Antennas and Propagation" No. 12 The paper "A Novel Miniature Broadband / Multiband Antenna Based on an End-Loaded Planar Open-Sleeve Dipole" in volume 54 (2006) uses a planar monopole antenna and proposes loading on the top of the radiation array, thereby reducing the size of the antenna, and at the same time The microstrip sleeve is used to widen the working bandwidth, so that the bandwidth reaches 31%. However, the antenna has a large area and a thick dielectric plate, which makes it difficult to apply to applications in narrow spaces; "Fire Control Radar Technology" Volume 34 (2005) The paper "Research on Miniaturized Planar Monopole Antenna" proposed that the end adopts a serpentine structure, and adopts a concentrated loading resistor at an appropriate position, thereby reducing the size of the antenna and expanding the working bandwidth, but the antenna adopts a concentrated loading components, so that the antenna gain is not high, and the radiation efficiency is greatly reduced

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