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Microstrip dual-mode and dual-pass band-pass filter

A filter and microstrip technology, applied in the field of filters, can solve the problem of inconvenient independent adjustment of dual-passband filters, and achieve the effects of simple structure, reduced area, and high precision

Inactive Publication Date: 2012-11-28
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this prior art is not convenient for the independent adjustment of the two passband center frequencies and the passband out-of-band characteristics of the dual-passband filter

Method used

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  • Microstrip dual-mode and dual-pass band-pass filter
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  • Microstrip dual-mode and dual-pass band-pass filter

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Embodiment Construction

[0026] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0027] Such as Figure 1-3 As shown, this embodiment includes: a first microwave dielectric substrate layer 1, a second microwave dielectric substrate layer 2, a metal layer 3 and an adhesive connecting the first microwave dielectric substrate layer 1 and the second microwave dielectric substrate layer 2 Combined medium 4, in which:

[0028] Such as figure 2 As shown, the first microwave dielectric substrate layer 1 is provided with a first resonator 5, a pair of input and output feeders 6 and 7, and a pair of coupling arms 8 and 9 (relatively located behind the input and output feeders 6 and 7, not shown), whe...

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Abstract

The invention relates to a microstrip dual-mode and dual-pass band-pass filter belonging to the technical field of microwave communication. The filter comprises two microwave medium substrate layers, a metal layer and a bonding medium for connecting the two microwave medium substrate layers, wherein, a first resonator, a pair of input and output feeders and a pair of coupling arms are arranged onthe first microwave medium substrate layer, a second resonator is arranged on a second microwave medium substrate layer, and the second resonator is opposite to the first resonator. The microstrip dual-mode and dual-pass band-pass filter has the advantages of simple structure and easy realization and convenient planar integration, and simultaneously can greatly improve the performance of the filter and realize dual-mode coupling; and compared with the traditional structure, the filter has two adjustable variables of length and width and increases the range in which two orthogonal modes generate coupling and cause resonant frequency splitting so that the band-pass bandwidth can be changed easily in design.

Description

technical field [0001] The invention relates to a filter in the field of microwave communication technology, in particular to a microstrip dual-mode dual-pass band-pass filter based on a perturbation ringlet. Background technique [0002] With the continuous development of mobile communication, satellite communication, radar and remote sensing technology, the system puts forward higher and higher requirements for the design of microwave filter at the front end of radio frequency transceiver. The microstrip filter has the characteristics of easy design and integration, so it has been widely used in the design of integrated circuits. With the rapid development of wireless communication technology, many wireless interconnection technologies and standards have emerged. The communication system working in two passbands at the same time is an important direction for the development of wireless communication. research hotspot. However, the traditional dual-band band-pass filter is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203
Inventor 毛军发褚瑞
Owner SHANGHAI JIAO TONG UNIV
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