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Powder divider integrating single-frequency bandpass filter

A power divider and single-band technology, applied in the direction of waveguide devices, electrical components, connecting devices, etc., to achieve low insertion loss, facilitate integration, miniaturization, and size reduction

Inactive Publication Date: 2012-04-04
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there has not been a device that integrates a real filter into a power divider. In order to fill this gap, the present invention proposes a new type of power divider that integrates a single-frequency bandpass filter

Method used

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  • Powder divider integrating single-frequency bandpass filter
  • Powder divider integrating single-frequency bandpass filter
  • Powder divider integrating single-frequency bandpass filter

Examples

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Embodiment

[0030] The structure of the power divider integrated with a single band pass filter is as follows figure 1 As shown, the relevant dimensions are as follows image 3 Shown. The thickness of the dielectric substrate is 0.63 mm, and the relative dielectric constant is 6.15. The isolation element connected between the open ends of the two-terminal open-circuit single-band-pass loop filter is composed of a 500 ohm resistor and a 39 nanohenry inductance element to enhance isolation. Such as image 3 As shown, the size parameters of each microstrip line of the open-ended single band-pass loop filter are as follows: the electrical length of the third microstrip line 3 θ 1 Is 61.3°, the electrical length between the open end of the third microstrip line 3 and the sixth microstrip line 6 θ 2 54°, 4 electrical length of the fourth microstrip line θ 3 Is 45°. The electrical lengths of these microstrip lines are selected to obtain the required input and output impedance characteristi...

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PUM

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Abstract

The invention discloses a powder divider integrating a single-frequency bandpass filter, which comprises an upper-layer micro-strip structure, an isolating component, an intermediate layer dielectric substrate and a lower-layer grounding metal plate. The powder divider integrating the single-frequency bandpass filter comprises two terminal open-circuit single-frequency bandpass annular filters and the isolating component connected between the two terminal open-circuit single-frequency bandpass annular filters. The input impedance and the output impedance of the powder divider integrating the single-frequency bandpass filter are identical; and the input impedance and the output impedance of each terminal open-circuit single-frequency bandpass annular filter are several times those of the powder divider integrating the single-frequency bandpass filter. Each terminal open-circuit single-frequency bandpass annular filter consists of two U-shaped half-wavelength resonators with identical structures. The isolating component can be a resistor, a capacitor or an inductor. The powder divider can be used in various radio-frequency front-end systems, simultaneously has the functions of power division and power selection and facilitates the integration and the miniaturization of devices.

Description

technical field [0001] The invention relates to a power divider with filtering function, in particular to a power divider integrated with a single-frequency band-pass filter, which can be applied to a radio frequency front-end circuit with a filter function. Background technique [0002] Power splitters are a fundamental part of microwave circuits and are used in almost all antenna arrays and balanced circuits because of their ability to separate and combine signals. Bandpass filters are another indispensable device in wireless communication systems because they can separate out the desired frequency bands. Both devices, power dividers and bandpass filters, co-exist in many microwave systems. [0003] In the past few decades, there has been a lot of research on power dividers. The focus of the research is widening the frequency band, reducing the area, dual frequency response and harmonic suppression. [0004] On the other hand, bandpass filter is also an important resear...

Claims

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Application Information

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IPC IPC(8): H01P5/16
Inventor 章秀银胡斌杰
Owner SOUTH CHINA UNIV OF TECH
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