Multi-mode resonance-based ultra-wideband band-pass filter

A technology of band-pass filter and multi-mode resonance is applied in the field of ultra-wideband band-pass filter to achieve the effects of low cost, convenient processing and simple design

Inactive Publication Date: 2016-07-20
HARBIN HESON SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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At the same time, it also poses more challenges to us, because most of the existing communication syst

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  • Multi-mode resonance-based ultra-wideband band-pass filter
  • Multi-mode resonance-based ultra-wideband band-pass filter

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Embodiment Construction

[0018] The invention designs an ultra-wideband band-pass filter based on multi-mode resonance. The filter has a wider pass band, smaller return loss and insertion loss, and good out-of-band characteristics.

[0019] The invention will be described in more detail below in conjunction with the accompanying drawings:

[0020] An example of the present invention is figure 1 As shown, the dielectric substrate (4) is FR-4 with a dielectric constant of 4.9. The dielectric substrate has a thickness of 1 mm. The grounding plate (5) under the dielectric substrate is made of copper material.

[0021] Such as figure 1 As shown, the present invention is based on a multi-mode resonance ultra-wideband bandpass filter, and the open stub structure (1), microstrip feeder structure (2) and (3) on the dielectric substrate are made of copper material.

[0022] The invention is based on the design parameters of the multi-mode resonance ultra-wideband bandpass filter:

[0023] Selection of diel...

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Abstract

The invention discloses a multi-mode resonance-based ultra-wideband band-pass filter, which comprises an open-circuit stub structure (1), microstrip feeder structures (2) and (3) and a ground surface (5) of the lower surface of a dielectric plate. The ultra-wideband is achieved by an interdigital coupling structure formed by transmission microstrip lines in the open-circuit stub structure and the microstrip feeder structures. The related filter has small return loss and insertion loss, good low-frequency characteristic and harmonics inhibition property. The filter is simple in design, compact in structure, attractive in appearance, convenient to process and low in cost, and can achieve 3.1-10.6GHz ultra-wideband.

Description

technical field [0001] The invention relates to an ultra-wideband bandpass filter based on multi-mode resonance, which can realize ultra-wideband in the 3.1-10.6GHz frequency band. Background technique [0002] UWB technology appeared in the late 1950s and was mainly used in military radars and communication systems with low intercept rates until the 1990s. In recent years, with the development of microelectronic device technology and technology, UWB technology has only begun to be gradually applied in the civilian field. On February 14, 2002, ultra-wideband wireless technology was first approved by the FCC of the Federal Communications Commission of the United States and can be used in short-distance wireless communications. This opened the door for the commercial application of ultra-wideband technology products and promoted ultra-wideband systems and Its devices such as: UWB filter, UWB antenna, UWB amplifier and other research progress. [0003] UWB technology can be a...

Claims

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Application Information

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IPC IPC(8): H01P1/203
Inventor 郝术苗张兰超孟祥余
Owner HARBIN HESON SCI & TECH
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