Design method of 5G microwave congruent-width parallel line coupling filter for industrial internet

An industrial Internet, coupled filter technology, applied in waveguide-type devices, computer-aided design, CAD circuit design, etc., can solve the problems of high-frequency filters are difficult to be highly consistent, filter design is not large, high R&D costs, etc. Achieve the effect of good agreement between design and processing, simple and smooth design process, and good performance guarantee

Active Publication Date: 2020-02-14
CHANGZHOU INST OF MECHATRONIC TECH
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Problems solved by technology

The corrosion process will lead to the discontinuity of the line width of each order of parallel lines and the rounding of the right angles, which will cause processing errors and frequency offsets. It can be clearly found that the design and processing results are inconsistent, making it difficult to realize high-frequency filters. The design and detection are highly consistent, resulting in a large filter design and high R&D costs

Method used

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  • Design method of 5G microwave congruent-width parallel line coupling filter for industrial internet
  • Design method of 5G microwave congruent-width parallel line coupling filter for industrial internet
  • Design method of 5G microwave congruent-width parallel line coupling filter for industrial internet

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specific Embodiment 1

[0060] according to figure 1 As shown, the present invention provides a kind of design method of the 5G microwave full equal width parallel line coupling filter that is used for Industrial Internet, comprises the following steps:

[0061] Step 1: Use N coupling line segments to form a parallel line coupling bandpass filter, number from left to right, and determine the central operating frequency and relative bandwidth of the filter according to the wireless transmission system index of the filter;

[0062] Consider a band-pass filter composed of N coupled line segments, such as figure 1 As shown, the line segments are numbered from 1 to N from left to right. Available for each coupled line segment figure 2 The equivalent circuit representation of , where J represents the inverter, that is, the inverter constant, then figure 1 The overall equivalent circuit diagram of the bandpass filter represented can be expressed as image 3 As shown, a line of length θ at each end of t...

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Abstract

The invention relates to a design method of a 5G microwave congruent-width parallel line coupling filter for an industrial internet. The method comprises the following steps of connecting N coupling line segments to form a parallel line coupling band-pass filter, and determining the correction center frequency according to the center working frequency and the relative bandwidth of the filter; according to the type of the filter and the in-band ripples, determining the inductance value of each series coil and the capacitance of a parallel capacitor, determining the value of the impedance converter parameter by adopting an odd-even mode impedance method, and determining the odd-even mode impedance of the filter; determining the length and precision of each coupling line segment according tothe chemical corrosion precision of the circuit board, so that the lengths and widths of all parallel lines are equal; and simulating the lengths and widths of all levels of the obtained parallel linecoupling band-pass filter through ADS, outputting the simulated lengths and widths as a layout file, and carrying out rounded corner processing on the open-circuit end of the parallel line coupling band-pass filter according to the layout file.

Description

technical field [0001] The invention relates to the technical field of full-equal-width parallel-line coupling filters, and relates to a design method for a 5G microwave full-equal-width parallel-line coupling filter used in the industrial Internet. Background technique [0002] In the circuit design of wireless signal transmission, in order to avoid the generation of harmonics and image signals, filters are one of the most common ways. [0003] As a widely used microwave device, filter plays an important role in front-end circuit design. With the development of microwave circuit integration, the microstrip parallel line coupled filter is easy to integrate, easy to design, easy to manufacture (printed circuit), large bandwidth, planar structure, large aspect ratio and easy rotation to adapt to the receiver channel. etc. advantages have been widely used. [0004] This invention patent involves the field of radio frequency / microwave / millimeter wave technology / industrial Inte...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/36G06F30/367H01P1/203
CPCH01P1/203Y02D30/70
Inventor 杨保华顾卫杰施皓邹华杰
Owner CHANGZHOU INST OF MECHATRONIC TECH
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