Generalized Chebyshev SIW filter magnetic tuning method

A Chebyshev and filter technology, applied in waveguide-type devices, electrical components, circuits, etc., can solve the problems that SIW cavity filters cannot be tuned and cannot be locally tuned, and achieve the effect of flexible and controllable local tuning.

Inactive Publication Date: 2018-09-21
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

The disadvantage of this method is that it is only suitable for microstrip or stripline filters, and ca

Method used

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  • Generalized Chebyshev SIW filter magnetic tuning method
  • Generalized Chebyshev SIW filter magnetic tuning method
  • Generalized Chebyshev SIW filter magnetic tuning method

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Embodiment Construction

[0018] The technical scheme of the present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0019] Such as figure 1 Shown is a generalized Chebyshev six-cavity coupled filter without spinning ferrite, which is a bandpass filter with a center frequency of 11.673GHz, a bandwidth of 28M, and a passband insertion loss of less than 1dB.

[0020] According to the indicators, the designed SIW six-cavity coupling filter with upper and lower distribution is calculated by calculating the coupling coefficient between each cavity. The coupling coefficients of 12 cavities, 23 cavities, 34 cavities, 56 cavities, 16 cavities and 25 cavities are respectively are 1.0456, 0.59968, 0.84974, 0.59978, 1.0456, 0.033491, -0.3164.

[0021] According to the size of the coupling coefficient, the size of each cavity, as well as the radius, spacing, and number of SIW cylinders are designed. The wide side of the designed filter is 7.62mm, the h...

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Abstract

The invention relates to the microwave and filter technology, and particularly relates to a generalized Chebyshev SIW filter magnetic tuning method. Tuning is performed for the SIW cavity filter in the generalized Chebyshev filter. A ferrite cylinder is embedded in the region of the highest coupling in the target SIW cavity filter, then an external magnetic field is applied to the embedded ferritecylinder, the coupling coefficient is changed by adjusting the size of the external magnetic field and finally the result is changed and magnetic tuning is realized. Magnetic tuning of the SIW cavityfilter can be realized.

Description

technical field [0001] The invention relates to microwave and filter technology, in particular to a magnetic tuning method of a generalized Chebyshev SIW filter. Background technique [0002] In recent years, with the rapid development and application of microwave technology in today's era, the allocation of frequency band resources has become increasingly scarce. The microwave filter, which is used to adjust the frequency response of the microwave system, has become the core component of the microwave system. Its ability to control the frequency response In many cases, it will determine the overall index of the microwave system. [0003] In order to meet the requirements of microwave technology to keep up with the changes of the times, and to overcome the deviation between the result and the performance index caused by the influence of the environment on the specific use of the filter, if the filter can be tuned conveniently and quickly, it will have a great impact on the r...

Claims

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Application Information

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IPC IPC(8): H01P1/207
CPCH01P1/207
Inventor 汪晓光张丽君赵圆圆陈良方建成刘水平肖宇杜凤媛谢海岩梁迪飞
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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