Compact broadband differential band pass filter

A band-pass filter, compact technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve problems such as difficulty in ensuring miniaturization, broadband and low loss, and achieve low loss, small size, and guaranteed symmetry. Effect

Active Publication Date: 2019-06-04
南通大学技术转移中心有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the existing technology is difficult to guarantee the realization of miniaturization, broadband and low loss at the same time

Method used

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  • Compact broadband differential band pass filter
  • Compact broadband differential band pass filter
  • Compact broadband differential band pass filter

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Embodiment Construction

[0018] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Typical embodiments of the invention are shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

[0019] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

[0020] Unless otherwis...

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Abstract

The invention discloses a compact broadband differential band pass filter. The band pass filter comprises a pair of half-wavelength coupling microstrip lines, two pairs of feed lines, a central microstrip line, and two pairs of capacitors; the half-wavelength coupling microstrip lines are arranged side by side, the perpendicular bisectors of the half-wavelength coupling microstrip lines are overlapped, and a bar-shaped slit is formed between the half-wavelength coupling microstrip lines; the two pair of feed lines are arranged corresponding to the pair of half-wavelength coupling microstrip lines, each pair of feed lines is connected to the two ends of the corresponding half-wavelength coupling microstrip line, and the two pairs of the feed lines are symmetrically distributed in the two sides of the perpendicular bisector of the half-wavelength coupling microstrip lines; the central microstrip line is connected between the half-wavelength coupling microstrip lines and symmetric by taking the perpendicular bisector of the half-wavelength coupling microstrip lines as the center; and the two pairs of capacitors are loaded between the half-wavelength coupling microstrip lines, and symmetrically arranged in the two sides of the half-wavelength coupling microstrip lines. The filter is simple in structure, smaller in size, sufficient in bandwidth and extremely low in loss.

Description

technical field [0001] The invention relates to the field of microwave communication, in particular to a compact broadband differential bandpass filter. Background technique [0002] With the rapid development of wireless communication technology, the data transmission rate is getting higher and higher, and the wireless communication system is developing towards the direction of broadband, miniaturization, low loss and high integration. At the same time, the improvement of the integration level of the wireless system has exacerbated problems such as signal crosstalk and environmental noise, so that differential circuits have received extensive attention to improve such problems. Microwave filters are an important part of wireless communication systems. Therefore, differential filters with broadband, miniaturization, and low loss meet the development needs of wireless communication systems. However, the design of such differential filters is still an important issue at presen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P1/203
Inventor 施金董建成徐凯张威陈燕云曹青华王磊
Owner 南通大学技术转移中心有限公司
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