Ultra-broadband folding coil antenna of coplanar waveguide feed and method for producing the same
A coplanar waveguide and ultra-broadband technology, applied in the microwave field, can solve the problems of complex feeding and narrow bandwidth of the folded loop antenna, and achieve the effect of simple manufacturing process, low cost and simple structure
Active Publication Date: 2012-08-15
ZHONGTIAN BROADBAND TECH +1
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the problems of narrow bandwidth and complex feeding of the folded loop antenna, and propose an ultra-wideband folded loop antenna with simple and novel structure, wide operating frequency, and easy fabrication and integration. The development of communication antennas provides technical reserves
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[0013] Control attached figure 1 , its structure is that the folded ring is composed of the top sub-ring 2 and the bottom sub-ring 3, the top sub-ring and the bottom sub-ring are printed on the front and bottom of the dielectric substrate 1 respectively, and the structure is exactly the same, the two through
[0014] Two rows of metallized vias (11 in each row) are connected to form a complete folding ring; each row of metallized vias has 11.
[0015] The structure of the folded ring is pentagonal, and the angle 8 between the gradient line and the horizontal line is controlled at 25-35 degrees; the feed adopts a coplanar waveguide structure, and the characteristic impedance of the coplanar waveguide is 50 ohms. Rectangular patch-shaped tuning branches, the coplanar waveguide feeder and rectangular patch tuning branches are connected through a ladder impedance transformation structure, and the three are located on the same side of the dielectric substrate as the top sub-ring; t...
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The invention relates to a coplanar waveguide feeder ultra wide band folded ring antenna and a manufacturing method thereof; the structure of the antenna is that a top layer subring and a bottom layer subring are respectively positioned at the two sides of a dielectric substrate and are connected with each other by two rows of metalized via holes, so that a complete folded ring is formed; the range of the included angle between a transition line and a horizontal line is 25-35 degrees; a coplanar waveguide feeder is connected with rectangle tuning branchknot by ladder impedance conversion structure, and the coplanar waveguide feeder, the rectangle tuning branchknot and the ladder impedance conversion structure form broadband feeding structure and are positioned at one side of the dielectric substrate together with the top layer subring. The manufacturing method utilizes the technique of a printed circuit board, designs the folded ring on the dielectric substrate with low specific inductive capacity and adopts the structure of a gradual transition ring, so as to reduce the lowest operating frequency and increase the operation bandwidth; on the other hand, the coplanar waveguide and the patch-shaped tuning branchknot are adopted as the feeder; at the same time, the multistage ladder impedance conversion structure is introduced between the branchknot and the feeder. The antenna has the advantages of simple structure, no feeding part attachment, simple manufacturing technique, convenient integration and low cost.
Description
technical field [0001] The invention relates to a folded loop antenna with ultra-wideband working characteristics and a manufacturing method thereof. The antenna has good radiation characteristics and a simple structure, can be used as a small ultra-wideband (UWB) communication equipment transceiver antenna or a mobile communication indoor distribution antenna, and belongs to the field of microwave technology. Background technique [0002] Due to its high data rate, simple system structure, and low cost, ultra-wideband communication technology has become a hot spot in the research of wireless communication technology. In the design of ultra-wideband communication system, one of the important tasks is the design and realization of ultra-wideband small antenna. The performance of the antenna will directly affect the performance of the whole machine. An ultra-wideband antenna refers to an antenna with wide-band operating characteristics. Generally speaking, an antenna with a r...
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IPC IPC(8): H01Q1/38H01Q13/08H05K3/00
Inventor 吕文俊朱洪波
Owner ZHONGTIAN BROADBAND TECH