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ACPS based filter antenna

A filter antenna and feeder technology, which is applied in the direction of antenna, antenna grounding switch structure connection, waveguide device, etc., can solve the problems of narrow filter antenna bandwidth, increased size and loss, limited application frequency band, etc., to increase antenna bandwidth, The effect of increasing bandwidth and facilitating integration

Active Publication Date: 2020-01-24
NANJING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this complicates the circuit and increases size and losses
For example, in 2013, Xinwei Chen, Fengxian Zhao et al published "A compact filtering antenna with flat gain response within the passband" on IEEE antenna and wireless propagation letters (857-860 2013), and first designed a microstrip line The second-order Butterworth bandpass filter with the structure, the two resonators in the filter are full-wavelength open-loop resonators, using standard filter synthesis technology, and then introducing a sector-shaped patch antenna at the second port, while The defective ground structure (DGS) is used on the floor. Although this structure can initially combine the filter and the antenna to achieve the effect of the filter antenna, the bandwidth of the filter antenna is relatively narrow, the application frequency band is relatively limited, and the double-layer structure is more complicated.

Method used

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  • ACPS based filter antenna
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  • ACPS based filter antenna

Examples

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Embodiment 1

[0022] Embodiment 1 uses a dielectric substrate 5 with a relative permittivity of 2.2 and a thickness of 0.508 mm, and a loss tangent of 0.0009. The three-dimensional structure of the filter antenna based on ACPS is as follows: figure 1 As shown, the top view is as figure 2 As shown, the relevant dimensions and specifications are as follows image 3 shown. combine image 3 , the size parameters of the new filter antenna based on ACPS are as follows: L 1 =27mm, W 1 = 1.1mm, L 2 =13.3mm,W 2 = 0.4mm, L 3 = 3.5mm, W 3 = 0.4mm, L 4 =8.5mm, W 4 =2.3mm, L 5 =9.5mm, W 5 = 0.45mm, L 6 = 4mm, W 6 = 0.4mm, L 7 =6.55mm, W 7 = 0.6mm, W 8 =11.4mm, W 9 = 0.1mm, W 10 =0.8mm The overall area of ​​the new filter antenna based on ACPS is 30.4×27mm 2 , the corresponding guide wavelength size is 0.51λ g ×0.453λ g , where λ g is the guided wavelength corresponding to the center frequency of the passband.

[0023] This example is modeled and simulated in the electromagnetic ...

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Abstract

The invention discloses an ACPS-based filtering antenna, which comprises a dielectric substrate, an input port feeder arranged on the surface of the dielectric substrate, and two radiating patches inaxial symmetry about an axis of the dielectric substrate, wherein a matching branch gap is formed in each of symmetric positions of the radiating patches, a matching branch is embedded in each matching branch gap, and the matching branches are connected with a resonator. The ACPS-based filtering antenna disclosed by the invention combines the features of an asymmetrical coplanar strip line, has the advantages of simple structure, easy integration, low loss, wide bandwidth, high efficiency and the like, and is very suitable for modern wireless communication systems.

Description

technical field [0001] The present invention relates to antenna technology, in particular to an ACPS-based filter antenna. Background technique [0002] In recent years, with the competition in the wireless communication market, communication is developing towards high speed and wide frequency band, and the coverage of antenna bandwidth greatly affects the development of communication technology. Traditional antennas are mostly designed based on microstrip lines, and the bandwidth is increased by designing an antenna array or adopting a double-layer structure, but this design will affect the integration of the antenna with active circuits and monolithic microwave integrated circuits. In addition, the traditional filter antenna design focuses on the antenna and the filter device itself. The antenna is responsible for sending and receiving signals, and the filter is responsible for extracting the desired signal and filtering out redundant signals. However, due to the mutual in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/38H01Q1/50H01Q23/00H01P7/08
CPCH01P7/082H01Q1/38H01Q1/50H01Q23/00
Inventor 陆格格王雪道王建朋杨梦妮
Owner NANJING UNIV OF SCI & TECH