Metallized through-hole infinitesimal disturbance based low profile back-cavity circularly polarized antenna

A metallized through-hole, circularly polarized antenna technology, applied in the direction of antenna, slot antenna, radiating element structure, etc., can solve the problems of large volume, unable to plane integration, low gain axis ratio, low axial ratio bandwidth, unable to plane integration, etc. Achieve excellent radiation characteristics, reduce production costs, and reduce volume

Inactive Publication Date: 2008-05-14
舟山乐讯智能科技有限公司
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Compared with the previous cavity-backed circularly polarized antenna, this implementation method is greatly reduced in size, but its processing cost is still high, and it cannot be integrated in a plane; the helical antenna is mainly used in space applications o

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  • Metallized through-hole infinitesimal disturbance based low profile back-cavity circularly polarized antenna
  • Metallized through-hole infinitesimal disturbance based low profile back-cavity circularly polarized antenna
  • Metallized through-hole infinitesimal disturbance based low profile back-cavity circularly polarized antenna

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Example Embodiment

[0021] As shown in Figures 1 and 2, the low-profile cavity-backed circularly polarized antenna based on metallized through-hole perturbation includes a Rogers 5880 dielectric substrate 1 with a thickness of 0.5 mm. The two sides of the dielectric substrate 1 are plated with metal layers, respectively. Layer 7 and lower metal layer 8, wherein lower metal layer 8 serves as a ground layer. As shown in Figure 3, the upper metal layer 7 is etched with a microstrip line 2 for power feeding and a coplanar waveguide transmission line 3 (the dashed box includes the part). The coplanar waveguide transmission line 3 is a coplanar waveguide structure with a common ground, and the middle metal strip The strip extends outward as a microstrip line 2. The length and width of the microstrip line 2 are 4 mm and 1.45 mm, respectively, and the two air gaps of the coplanar waveguide transmission line 3 are both 0.7 mm in width and 4.2 mm in length. A through hole with a diameter of 1 mm is opened thro...

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Abstract

The invention relates to a lowly-outlined cavity-backed circularly polarized antenna based on the disturbance of plated-through hole. The existing cavity-backed circularly polarized antenna can not be planar integrated has a complex structure, a large size, and a high cost. In the invention, a metal layer is plated at two faces of a dielectric substrate; an upper metal layer is etched with a micro-strip line used for feeding and a coplanar waveguide transmission line; a middle metal strip of the coplanar waveguide transmission line extends outwards as a micro-strip line. A plurality of plated-through holes are installed by penetrating the upper metal layer, the dielectric substrate and a lower metal layer forming a round cavity into which the coplanar waveguide transmission line extends. Two strips of vertical rectangular slots are etched at the region on the lower metal layer of the corresponding cavity. Two perturbation plated-through holes are installed by penetrating the whole dielectric substrate at the two ends of the central line of one of the two slots. Compared with the existing cavity-backed circularly polarized antenna formed by the metal cavity, the cavity adopted by the invention is manufactured by the common PCB technology with a low manufacturing cost, and the invention can be seamlessly integrated with a micro-strip circuit, thus increasing the integrity of the system.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a low-profile cavity-backed circularly polarized antenna based on metallized through-hole perturbation based on substrate integrated waveguide technology. Communication, radar and other wireless communication systems are used to solve the polarization mismatch problem caused by the Faraday electromagnetic rotation effect, and can also play a role in suppressing rain and fog interference and anti-multipath reflection. Background technique [0002] As a key component of a communication system, antennas are widely used in wireless communication occasions. Due to the Faraday rotation effect of radio wave propagation in space and the uncertainty of the position of the receiving antenna in mobile communication, if a traditional single-polarized antenna is used as the transceiver unit, the polarization matching alignment of the transceiver antenna is required to achieve better receptio...

Claims

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Application Information

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IPC IPC(8): H01Q1/38H01Q13/08H01Q13/10
Inventor 罗国清孙玲玲
Owner 舟山乐讯智能科技有限公司
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