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Multifunctional filter with adjustable center frequency and bandwidth based on microstrip line resonator

A center frequency, resonator technology, applied in the field of multi-function filters, can solve the problems of increasing the circuit insertion loss and application difficulty, loading too many varactor diodes, etc.

Active Publication Date: 2020-06-12
CHENGDU PINNACLE MICROWAVE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this patent also has the following disadvantages: First, there are more varactor diodes, which increases the insertion loss of the circuit and the difficulty of application

Method used

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  • Multifunctional filter with adjustable center frequency and bandwidth based on microstrip line resonator
  • Multifunctional filter with adjustable center frequency and bandwidth based on microstrip line resonator
  • Multifunctional filter with adjustable center frequency and bandwidth based on microstrip line resonator

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Embodiment

[0056] Such as Figure 1 to Figure 2 As shown, this embodiment provides a multifunctional filter with adjustable center frequency and bandwidth based on a microstrip line resonator. The multifunctional filter includes a balun filter, a power divider filter and a dual-port reconfigurable filter. Wherein, the thickness of the dielectric substrate in this embodiment is 25 mil, and the relative permittivity is 10.2. In addition, the varactor diode is selected from SMV123 series. It should be noted that the serial numbers such as "first" and "second" in this embodiment are only used to distinguish similar components, and should not be understood as specific limitations on the scope of protection. In addition, directional terms such as "bottom", "top", and "edge" described in this embodiment are described based on the drawings.

[0057] Specifically, the multifunctional filter includes a first impedance resonator, a second impedance resonator, and a third impedance resonator all a...

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Abstract

The invention discloses a multifunctional filter with adjustable center frequency and bandwidth based on a microstrip line resonator, comprising a first impedance resonator, a second impedance resonator, a third impedance resonator, a varactor diode D1, a varactor diode D2, a varactor diode D3, a varactor diode D4, a varactor diode D5, a varactor diode D6, a varactor diode D7, a varactor diode D8,a varactor diode D9, a varactor diode D10, a varactor diode D11, a varactor diode D12, a varactor diode D13, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R5,a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a capacitor C1, a capacitor C2 and a capacitor C3, wherein the distance between the first low impedance bandand the first low impedance band of the second impedance resonator is 2mm, and the distance between the first low impedance band of the second impedance resonator and the first low impedance band ofthe third impedance resonator is 1.2mm.

Description

technical field [0001] The invention relates to the field of wireless communication systems, in particular to a multifunctional filter with adjustable center frequency and bandwidth based on a microstrip line resonator. Background technique [0002] With the rapid development of modern wireless communication systems, spectrum resources are increasingly tight, and more and more environments require electronic devices used in them to be tunable and multi-functional, so as to improve the utilization of spectrum resources. Among them, the balun filter is an independent microwave passive device. It relies on the principle of anti-interference of the balanced circuit in the signal system. At the same time, the balun filter also has the advantages of low cost, high integration, and miniaturization. Therefore, The balun filter has become one of the keys to develop a radar communication system that is resistant to electromagnetic interference. In addition, the power divider is also ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203H01P7/08
CPCH01P1/203H01P7/088
Inventor 杨涛朱旭董元旦
Owner CHENGDU PINNACLE MICROWAVE CO LTD
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