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Bent dual-band bandpass filter applying defected ground level waveguide technology

A ground plane and filter technology, applied in the field of filters, can solve the problems of high power consumption and large volume, and achieve the effects of increasing power carrying capacity, easy integration, and compact design structure.

Inactive Publication Date: 2014-04-16
EAST CHINA JIAOTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional design of dual-frequency communication systems, each communication system has its own independent antenna, filter, low-noise amplifier and other components, so the volume is large and the power consumption is large

Method used

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  • Bent dual-band bandpass filter applying defected ground level waveguide technology
  • Bent dual-band bandpass filter applying defected ground level waveguide technology
  • Bent dual-band bandpass filter applying defected ground level waveguide technology

Examples

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Embodiment Construction

[0020] In an embodiment of the present invention, a bent-type dual-band bandpass filter using defect-ground plane waveguide technology is as follows: figure 1 As shown, this embodiment is produced on a dielectric plate with a dielectric constant of 4.5 and a thickness of 0.8 mm.

[0021] The structure of the upper surface microstrip part in the embodiment of the present invention is as follows figure 2 As shown, the microstrip part on the upper surface is composed of microstrip input and output ports (1), (2) and a pair of T-shaped coupling arms (3), (4), and the input port (1) is coupled to the The defect ground plane waveguide structure on the ground, the input port (2) is coupled to the ground defect ground plane waveguide structure by the coupling arm (4), and the coupling arms (3), (4) are respectively located in two pairs of defect ground waveguide square rings (7) directly above the edge.

[0022] The defective ground plane waveguide structure of the ground part in t...

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Abstract

The invention relates to a bent dual-band bandpass filter applying a defected ground level waveguide technology, which comprises an upper surface micro-band part and a defected ground level waveguide structure of a ground part, wherein the upper surface micro-band part comprises a micro-band input port (1), a micro-band output port (2) and a pair of T-shaped coupling arms (3) and (4), wherein the input port (1) is coupled to the defected ground level waveguide structure of the ground through the coupling arm (3), and the output port (2) is coupled to the defected ground level waveguide structure of the ground through the coupling arm (4); and the defected ground level waveguide structure of the ground part is formed by bending and winding a big square defected ground level waveguide ring into three square defected ground level waveguide rings, wherein the three square defected ground level waveguide rings are respectively a defected ground waveguide square ring (5) which is positioned at the outermost layer, a defected ground waveguide square ring (6) which is bent inward and is positioned at the middle layer, and a defected ground waveguide square ring (7) which is bent inward and is positioned at the innermost layer. The invention is applied in intensive integrated circuits.

Description

technical field [0001] The invention relates to a bent double-band band-pass filter using defect ground plane waveguide technology, which belongs to the technical field of filters. Background technique [0002] With the continuous advancement of science and technology, mobile communication, satellite communication, radar and wireless remote sensing technology are also constantly developing, and the system puts forward higher and higher requirements for the design of microwave and radio frequency filters at the front end of radio frequency transceiver. Due to the advantages of small size, relatively low processing complexity, light weight and easy integration, microstrip filters are widely used in circuits such as microwave integrated circuits (MICs). [0003] The dual-band microwave filter can work in two different frequency bands of wireless communication at the same time. This filter uses a dual-band unit to process signals in two bands. This design concept provides an e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
Inventor 刘海文沈溧
Owner EAST CHINA JIAOTONG UNIVERSITY
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