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Double-passband-to-three-passband-to-four-passband passband-reconfigurable filter

A technology for reconfiguring filters and four-pass bands, which is applied to waveguide devices, electrical components, circuits, etc., can solve the problems of large overall size, high filter insertion loss, and small number of reconfigurable pass bands, and achieve reduction Size, effect of reducing insertion loss

Inactive Publication Date: 2018-11-13
XIANGNAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of the passband reconfigurable filter formed by this scheme is that the number of passband reconfigurables is too small, and only the reconfigurability of double pass bands to three pass bands can be realized; and the overall size is too large, double pass bands and three pass bands The insertion loss of the passband filter is too high

Method used

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Examples

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Embodiment 1

[0023] Embodiment 1: A dual passband filter of a passband reconfigurable filter, with center frequencies at 1.71 GHz and 1.94 GHz.

[0024] refer to figure 1 and figure 2 , the present invention includes a dielectric substrate 1, a metal ground plate 2, an input feeder 3, an output feeder 4, a left outer ring resonator 5, a right outer ring resonator 6, a left inner ring resonator 7, a right inner ring resonator 8, a left Outer ring diode unit 9, right outer ring diode unit 10, left inner ring diode unit 11, right inner ring diode unit 12, left outer ring open circuit branch 13, right outer ring open circuit branch 14, left inner ring open circuit branch 15, right inner ring Ring open branch 16, characterized in that:

[0025] The dielectric substrate 1 adopts a copper-clad grounding plate with a dielectric constant of 2.45 and a thickness of 0.8 mm.

[0026] The metal ground plate 2 is the copper clad surface of the microstrip dielectric substrate.

[0027] The input fee...

Embodiment 2

[0039] Embodiment 2: A dual passband filter of a passband reconfigurable filter, with center frequencies at 1.71GHz, 1.94GHz and 2.8GHz.

[0040] The structure of this embodiment is the same as that of Embodiment 1, and the structural parameters different from Embodiment 1 are provided below:

[0041] The left outer ring diode unit 9 is located on the left side of the left outer ring resonator 5. It is composed of a DC feed power supply, a PIN diode, a DC blocking capacitor, and two choke inductors. The voltage of the DC feed power supply Set to 12V.

[0042] The right outer ring diode unit 10 is located on the right side of the right outer ring resonator 6, and it is composed of a DC feed power supply, a PIN diode, a DC blocking capacitor, and two choke inductors. The voltage setting of the DC feed power supply is 12V.

[0043] In this embodiment, the traditional resonator cascade structure is replaced by a nested resonator combination form, which reduces the size of the filt...

Embodiment 3

[0044] Embodiment 3: A dual passband filter of a passband reconfigurable filter, with center frequencies at 1.71GHz, 1.94GHz, 2.75GHz and 2.85GHz.

[0045] The structure of this embodiment is the same as that of Embodiment 1, and the structural parameters different from Embodiment 1 are provided below:

[0046] The left outer ring diode unit 9 is located on the left side of the left outer ring resonator 5. It is composed of a DC feed power supply, a PIN diode, a DC blocking capacitor, and two choke inductors. The voltage of the DC feed power supply Set to 12V.

[0047] The right outer ring diode unit 10 is located on the right side of the right outer ring resonator 6, and it is composed of a DC feed power supply, a PIN diode, a DC blocking capacitor, and two choke inductors. The voltage setting of the DC feed power supply is 12V.

[0048] The left inner ring diode unit 11 is located on the left side of the left inner ring resonator 7. It is composed of a DC feed power supply...

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Abstract

The invention discloses a double-passband-to-three-passband-to-four-passband passband-reconfigurable filter. The invention aims to solve the problems of few reconfigurable passbands, large size and large insertion loss. The double-passband-to-three-passband-to-four-passband passband-reconfigurable filter based on microstrip lines includes a dielectric substrate metal grounding plate, an input feeder line, an output feeder line, four microwave resonators, four diode units, and four open-circuit branches. Loading voltages on the diodes can be adjusted, so that a double-passband passband filter effect, a three-passband passband filter effect, and a four-passband passband filter effect can be obtained, and therefore, a double-passband-to-three-passband-to-four-passband passband-reconfigurablefiltering function can be realized. The double-passband-to-three-passband-to-four-passband passband-reconfigurable filter has the advantages of increased reconfigurable passbands, miniaturization andlow passband insertion loss, and can be used in a multi-channel wireless communication system.

Description

technical field [0001] The invention belongs to the technical field of microwave electronic devices, in particular to a microstrip multi-pass band filter, which can be used in a multi-channel wireless communication system. Background technique [0002] In recent years, with the rapid development and research of the fourth generation mobile communication and the fifth generation mobile communication, in order to be compatible with the first three generations, the fourth generation and the fifth generation mobile communication at the same time, a multi-frequency and miniaturization requirements. The microband passband reconfigurable filter can independently select multiple frequency bands for filtering, so that the multi-channel communication system can share a filter, thereby reducing the number of filters in the system, which has an important impact on improving the performance of the communication system. [0003] In 2015, Xu J et al. published "Compact Switchable Bandpass...

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/203
CPCH01P1/20H01P1/203
Inventor 邱枫黄健全雷大军唐政华姚敏
Owner XIANGNAN UNIV