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Hybrid band-pass filter

A filter and mixed-band technology, applied in the direction of impedance network, electrical components, etc., to achieve the effect of flexible bandwidth adjustment

Pending Publication Date: 2022-06-17
苏州航凯微电子技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the quality factor of traditional passive filters is limited by itself, and it is difficult to meet today's communication needs

Method used

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Embodiment Construction

[0040] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", The orientation or positional relationship indicated by "vertical", "horizontal", "horizontal", "longitudinal", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only used to illustrate the relative positional relationship between each component or component , and does not specifically limit the specific installation orientation of each component or component.

[0041] In addition, some of the above-mentioned terms may be used to express other meanings besides orientation or positional relationship. For example, the term "on" may also be used to express a certain attachment or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the present application can be understood according to specific situations.

[0042] Furthermore, t...

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Abstract

The embodiment of the invention discloses a hybrid band-pass filter which is used for adjusting a transfer function of the band-pass filter so as to flexibly adjust parameter indexes such as bandwidth of the band-pass filter. The device comprises a first resonance module, a second resonance module, a first adjusting module, an input module and an output module. The first resonance module is respectively connected with the input module, the second resonance module and the first adjusting module, and the first resonance module is used for enhancing out-of-band rejection; the second resonance module is connected with the output module, the second resonance module is used for generating resonant frequency, and the set frequency range is determined by the resonant frequency generated by a parallel loop formed by the second resonance module and the first adjusting module; and the first adjusting module is connected with the output module, and the first adjusting module is used for adjusting a transfer function of the hybrid band-pass filter so as to change the resonant frequency.

Description

technical field [0001] The embodiments of the present application relate to the field of bandpass filters, and in particular, to a hybrid bandpass filter. Background technique [0002] With the development of wireless communication technology, in order to save frequency band resources and improve anti-interference ability, various circuit systems have higher and higher requirements on the performance of filters. Prior to this, although the thin film bulk acoustic wave filter and the surface acoustic wave filter technology were also developing rapidly, it was difficult to keep up with the update of the requirements of wireless communication. In the context of this application, the wireless communication industry needs a filter with better performance at high frequencies. [0003] With the increasing demand in wireless communication, the frequency spectrum in the communication system becomes more crowded, so a bandpass filter with narrower bandwidth and narrower roll-off coef...

Claims

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Application Information

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IPC IPC(8): H03H1/00
CPCH03H1/00
Inventor 盖广洪刘兆年冯铭昆黄一
Owner 苏州航凯微电子技术有限公司
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