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A double-pass band power divider filter

A filter and double passband technology, applied in the field of microwave passive devices, can solve the problems of high selectivity and high isolation level, and achieve the effects of high selectivity, good isolation and low loss

Active Publication Date: 2021-04-30
NANJING IND INST FOR ADVANCED INTELLIGENT EQUIP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: The technical problem to be solved by this invention is to provide a compact structure, low loss, high selectivity, and isolation for the current power division filter technology with high isolation level, low loss and high selectivity. Good dual passband power divider filter

Method used

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  • A double-pass band power divider filter
  • A double-pass band power divider filter
  • A double-pass band power divider filter

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Embodiment 1

[0028] like figure 1 , figure 2 As shown, the present embodiment provides a kind of double-pass band power divider filter, including double-sided, rectangular PCB board, PCB board includes the circuit layer of the top surface, the dielectric substrate 12 and the metal ground plate 13 of the bottom surface, its It is characterized in that it includes an isolation resistor 11, and the circuit layer of the PCB board includes an input port feeder 1 and two sets of left and right mirror circuits, and the mirror circuit is arranged symmetrically with the central axis of the PCB board; the input port feeder 1 is along the central axis of the PCB board Layout, starting from the front end of the PCB board, extending to the rear of the PCB board, the rear end is short-circuited with the metal ground plate 13 at the bottom of the PCB board; the mirror circuit on the left includes the first output port feeder 2, the first coupled microstrip line strip 4. The third coupled microstrip lin...

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Abstract

The invention provides a dual-passband power division filter, which includes a PCB board, the PCB board includes a circuit layer on the top surface, a dielectric substrate and a metal grounding plate on the bottom surface, and the circuit layer includes an input port feeder and two sets of symmetrical mirror circuits. The input port feeder is arranged along the central axis of the PCB board, starting from the front end of the PCB board, extending to the rear of the PCB board, and the rear end is short-circuited with the metal ground plate at the bottom of the PCB board; the mirror circuit includes the output port feeder, two coupling Microstrip strips, quarter-wave open lines and half-wave open lines, one coupled microstrip strip is close to the rear section of the input port feeder and is arranged in parallel with the rear section of the input port feeder, and the other is coupled with a microstrip line. The strip line strips are arranged in parallel with the quarter-wave open lines. The invention has compact structure, low loss, high selectivity and good isolation.

Description

technical field [0001] The invention relates to the technical field of microwave passive devices, in particular to a double-passband power division filter. Background technique [0002] Power splitters and filters are two types of passive components that are indispensable in modern wireless communication systems. In the system, they are usually cascaded together, which often results in large circuit size and high insertion loss. In order to solve this problem, the power divider and the bandpass filter are integrated into one component, that is, the power divider filter (Filtering Power Diver, FPD), and the specified power distribution / combination and frequency selectivity are realized at the same time. As a functionally integrated passive component, the power divider filter has attracted extensive attention from academic researchers. [0003] Document 1 [C.F.Chen, T.Y.Huang, T.M.Shen and R.B.Wu, "Design of Miniaturized Filtering Power Dividers for System-in-a-Package," IEE...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203H01P5/16
CPCH01P1/20309H01P1/2039H01P5/16
Inventor 张钢张其运焦飞李则灵张琪马烁焜杨继全
Owner NANJING IND INST FOR ADVANCED INTELLIGENT EQUIP