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Microstrip resonator

A resonator and microstrip technology is applied in the microwave field to achieve the effect of suppressing the appearance of double frequency resonance

Inactive Publication Date: 2009-10-07
INST OF PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For filters that require very high rejection over a wide frequency range in the far field (e.g. including the filter octave passband) (e.g. Figure 7 ), general resonators cannot meet their needs, and new resonators must be found to suppress frequency multiplication to achieve far-field high out-of-band suppression

Method used

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Examples

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no. 1 example

[0028] refer to figure 1 , 2a , 2b, using a complete microstrip line, the microstrip line is a superconducting microstrip line, the upper layer of the microstrip conductor 3 and the lower layer of the ground plane conductor 1 are high-temperature superconducting thin films, and the middle is a dielectric constant ε r The single crystal dielectric sheet 2 forms a microstrip geometric structure in which two ends are inserted into each other and the middle is connected by a broken line. In this embodiment, the selected microstrip line adopts the crystal medium LaAlO3, and its dielectric constant ε r = 23.6.

[0029] Figure 5 is the embodiment according to the given frequency f 0 =940MHz, the dielectric constant ε of the crystal medium LaAlO3 r = 23.6, a designed superconducting microstrip resonator pattern, the connecting microstrip is a broken line, the length is 2.34mm, the width is 2.3mm, the line width is 0.1mm, the line width and spacing of the fingers are 0.1mm, and t...

no. 2 example

[0032] A superconducting microstrip line is used to form a microstrip line geometric structure in which the two ends of the fingers 32 are inserted into each other and connected by broken lines. In the present embodiment, the connecting microstrip 31 is linear and the insertion finger 32 is linear (such as Figure 4a shown). When the frequency is doubled, the charges on the fingers 32 at both ends have the same sign, and the fingers 32 cannot function as capacitors, thereby suppressing the doubled frequency.

no. 3 example

[0034] A superconducting microstrip line is used to form a microstrip line geometric structure in which the two ends of the fingers 32 are inserted into each other and connected by broken lines. In the present embodiment, the connecting microstrip 31 is arc type and the insertion finger 32 is linear (such as Figure 4b shown). When the frequency is doubled, the charges on the fingers 32 at both ends have the same sign, and the fingers 32 cannot function as capacitors, thereby suppressing the doubled frequency.

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Abstract

The invention relates to a microstrip resonator which comprises a microstrip line formed by an upper layer conductor thin film, a lower layer conductor thin film and single crystal media positioned between the upper layer conductor thin film and the lower layer conductor thin film, wherein inserting fingers are arranged at the both ends of the microstrip line and are mutually inserted; and the inserting fingers are connected by connecting the microstrip. The microstrip resonator can inhibit the frequency-doubled resonance.

Description

technical field [0001] The invention relates to the microwave field, in particular to a microstrip resonator. Background technique [0002] In microwave engineering, microstrip filters (a passive device) are composed of multiple microstrip resonators and are used in various microwave devices (such as radars, mobile phone base stations, microwave communication devices, radio astronomy telescopes, etc.). To select a signal of a certain frequency, that is, use the filter to pass the required signal frequency smoothly (that is, pass through the passband of the filter), and suppress the unnecessary signal frequency (that is, pass the out-of-band suppression of the filter). [0003] A microstrip resonator, generally consisting of a section of microstrip line (see figure 1 The cross-sectional view of the microstrip line) is composed, and usually takes one-half wavelength of the resonance frequency, and its physical model is equivalent to the series or parallel resonance of the ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P7/08
Inventor 张强李春光孙亮李翡于涛王跃辉高路郭进边勇波黎红张雪强罗强顾长志冯稷何豫生
Owner INST OF PHYSICS - CHINESE ACAD OF SCI