Reconfigurable band-pass filter and manufacturing method thereof

A technology of band-pass filter and reconstruction filter, which is applied in the direction of waveguide devices, electrical components, circuits, etc., can solve the problems of large insertion loss in the pass-band, difficult elimination of inter-stage resonance, and damage to the pass-band performance, etc., to achieve convenient Mass production, simple and convenient control, cost control effect

Active Publication Date: 2017-12-01
36TH RES INST OF CETC
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  • Abstract
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  • Claims
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Problems solved by technology

However, the above control strategies are complex, the passband insertion loss is large, and cannot meet the requirements of narrowband applications.
In addition, the Chinese patent "Variable Bandwidth RF Filter" (authorized announcement number CN104205481B) adopts two reconfigurable filters to realize the strategy of reconfigurable bandwidth, but

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  • Reconfigurable band-pass filter and manufacturing method thereof
  • Reconfigurable band-pass filter and manufacturing method thereof
  • Reconfigurable band-pass filter and manufacturing method thereof

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[0032] In order to make the objectives, technical solutions and advantages of the present invention clearer, the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0033] Figure 1 to Figure 4 In principle, an embodiment of a reconfigurable filter of the present invention is schematically shown.

[0034] reference Figure 1 to Figure 4 , A reconfigurable bandpass filter of the present invention includes more than two filter units connected in a cascade manner, and an amplifier unit is connected between two adjacent filter units; wherein the filter unit is a frequency Reconfigurable filter unit; the amplifier unit is a gain reconfigurable amplifier unit.

[0035] Preferably, in each embodiment of the present invention, two cascaded filter units are taken as an example, that is, frequency reconfigurable filter 1 (BPF1) and frequency reconfigurable filter 3 (BPF2). A gain reconfigurable amplifier 2 is connec...

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Abstract

The present invention discloses a reconfigurable band-pass filter and a manufacturing method thereof. The reconfigurable band-pass filter includes two or more filter units connected in cascade with amplifier unit(s) connected between two adjacent filter units; the filter units are frequency-reconfigurable filter units, and the amplifier unit(s) is/are gain-reconfigurable amplifier unit(s). Through the arrangement of two or more filter units connected in cascade and the amplifier unit(s) connected between two adjacent filter units, the problem of inter-stage matching among the multi-stage filter units is solved and a reconfigurable band-pass filter featuring the reconfigurable frequency, bandwidth and gain can be reconstructed. The control is simple and convenient and is conducive to the integration, modularization and miniaturization of an RF front-end, helping to further control the cost and the convenience of mass production.

Description

technical field [0001] The invention relates to the technical field of electronic circuits, in particular to a reconfigurable bandpass filter and a manufacturing method thereof. Background technique [0002] In the frequency band below 6GHz, wireless communication systems of various standards (such as GSM, GPS, WCDMA, TD-SCDMA, LTE) and wireless local area network (WLAN) are crowded, so it supports multi-frequency multi-mode radio frequency for wireless communication of various standards Technology has become a research and application hotspot. As a key component of the RF transceiver, the filter plays the role of frequency selection or frequency suppression. If multiple groups of filters are used in a multi-frequency multi-mode radio frequency transceiver, not only the cost is high but also it is not conducive to miniaturization. Therefore, frequency and bandwidth reconfigurable bandpass filter becomes an effective means to solve the above problems. [0003] Therefore, w...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/203H01P11/00
Inventor 黄晓国张锦旗
Owner 36TH RES INST OF CETC
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