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Miniaturized wide-stopband ultra-wideband filter with dual band-notched characteristics

An ultra-wideband filter and wide stopband technology, which is applied in the field of communication, can solve the problems of filters without notch characteristics, wide notch bandwidth, and large filter size, and achieve flexible and diverse designs, easy integration, and compact structure Effect

Inactive Publication Date: 2017-06-23
CHONGQING UNIV OF POSTS & TELECOMM
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

Such as an ultra-wideband filter with high selectivity and ultra-high stop-band suppression effect, but the filter designed by this patent has no notch characteristics and cannot be well used in actual production; another one has notch characteristics The ultra-wideband filter of the patent produces a notch characteristic by loading stubs on the parallel coupling line, but the filter size of the patent design is larger and the notch bandwidth is wider

Method used

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  • Miniaturized wide-stopband ultra-wideband filter with dual band-notched characteristics
  • Miniaturized wide-stopband ultra-wideband filter with dual band-notched characteristics
  • Miniaturized wide-stopband ultra-wideband filter with dual band-notched characteristics

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Embodiment Construction

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] Such as figure 1 As shown, the UWB filter of the present invention consists of a first input / output port 10, a second input / output port 20 and a dielectric substrate 6, and the dielectric substrate includes an upper layer microstrip structure and a bottom metal ground structure of the dielectric substrate The upper microstrip structure of the dielectric substrate includes: the first uniform transmission unit 11, the second uniform transmission unit 20, the parallel coupled line unit I, the parallel coupled line unit II, the ring resonator I, the first resonant unit I, The second resonant unit I, the underlying metal grounding structure of the dielectric substrate includes: a grounding metal unit 7, a first complementary open-loop resonator unit, a second complementary open-loop resonator unit, a first rectangular defect ground unit, ...

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Abstract

The invention relates to a miniaturized wide-stopband ultra-wideband filter with dual band-notched characteristics. The filter comprises a first input / output port, a second input / output port, and a dielectric substrate. A top micro-strip structure and a bottom metal grounding structure of the dielectric substrate are connected. The top micro-strip structure comprises a first uniform transmission unit, a second uniform transmission unit, a parallel coupling line unit I, a parallel coupling line unit II, and a ring resonator. The first input / output port is connected with one end of the first uniform transmission line unit, and the other end of the first uniform transmission line unit is coupled to one end of the ring resonator. The second input / output port is connected with one end of the second uniform transmission line unit, and the other end of the second uniform transmission line unit is coupled to the other end of the ring resonator. By designing the ring resonator to be of a folding structure and arranging the two input / output ports on the same side of the dielectric substrate, the filter is miniaturized. The filter has the advantages of compact structure, high frequency selectivity and wide stopband rejection.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a miniaturized wide-stop ultra-wideband filter with dual-notch characteristics, which can suppress the interference of ultra-wideband pass-band signals (such as wireless local area network (WLAN) signals and satellite communication signals) . Background technique [0002] Since 2002, the U.S. Federal Communications Commission (FCC) officially approved the commercial license of ultra-wideband technology, releasing the communication frequency band from 3.1GHz to 10.6GHz, and ultra-wideband communication technology has received extensive attention. Due to its low cost, low power consumption, fast data transmission, high security, and wide application, ultra-wideband technology has quickly become a research hotspot in the field of communication. Among them, the ultra-wideband filter is one of the core components of the ultra-wideband communication system, and its performance ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
CPCH01P1/20381
Inventor 王斌荆麟郝宏刚尹波
Owner CHONGQING UNIV OF POSTS & TELECOMM
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