A miniature three-dimensional dual-mode high-performance narrow-band filter
A narrow-band filter and high-performance technology, applied in the field of radio frequency microwave filters, can solve the problems of not being able to obtain low insertion loss narrow-band characteristics at the same time, the requirements for processing technology are relatively strict, and it is not conducive to miniaturization and integration. It achieves light weight, Deconstructed compact, low in-band insertion loss effect
Inactive Publication Date: 2016-08-24
NANJING UNIV OF SCI & TECH
View PDF7 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The surface acoustic wave filter has better filtering characteristics, but its production cost is relatively high and the requirements for processing technology are relatively strict, and the yield rate is low
Microstrip filters and LC filters are not easy to obtain the characteristics of narrow-band insertion loss and large volume is not conducive to miniaturization and integration
The prior art has the defect that low insertion loss narrowband characteristics, better filtering characteristics, miniaturization, high yield and low cost characteristics can not be obtained at the same time
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0031] The first double-mode resonator B1 first strip line C3 of the novel three-dimensional miniature dual-mode broadband filter of the present invention, the first double-mode resonator B1 second strip line C4, the second dual-mode resonator B2 first strip line The dimensions of the stripline C9, the second dual-mode resonator B2, the second stripline C10 and the first connecting stripline C7 are 1.8mm×0.4mm, 1.52mm×0.5mm, 1.8mm×0.5mm, 1.9mm× 0.6mm and 3.2mm×0.3mm.
[0032] The size of a miniature three-dimensional dual-mode high-performance narrowband filter of the present invention is only 4.8mm×4.2mm×1.5mm, and its simulation performance can be obtained from figure 2 , image 3 It can be seen that the center frequency of the passband is 2.984GHz, the passband is 2.92GHz to 3.02GHz, the relative bandwidth is 3%, the minimum insertion loss in the passband is 1.58dB, and the return loss of the input port is better than 19.58dB. Two zeros, better out-of-band rejection.
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention relates to a miniature three-dimensional dual-mode high-performance narrow-band filter, including input / output ports, input and output inductors, and three dual-mode resonators realized by using a stripline structure. The above structures all adopt multi-layer low-temperature co-fired ceramic technology accomplish. The invention has the advantages of wide frequency coverage, narrow relative bandwidth, small insertion loss, light weight, small volume, high reliability, good electrical performance, good temperature stability, good batch consistency of electrical performance, low cost, and mass production, etc. , suitable for narrowband communication systems that have strict requirements on volume, electrical performance, temperature stability and reliability, such as communications in radio frequency, microwave and millimeter wave bands, and satellite communications.
Description
technical field [0001] The invention relates to a radio frequency microwave filter, in particular to a miniature three-dimensional double-mode high-performance narrow-band filter. Background technique [0002] In recent years, with the rapid development of miniaturization of mobile communication, satellite communication and national defense electronic systems, high performance, low cost and miniaturization have become the development direction of the microwave / radio frequency field. The performance, size and reliability of microwave filters Both sex and cost have put forward higher requirements. In some cutting-edge defense equipment, the current frequency bands are quite crowded, so cutting-edge equipment such as satellite communications are developing towards the millimeter-wave band, so microwave millimeter-wave band filters have become key electronic components in the receiving and transmitting branches of this band, described The main indicators of the performance of t...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/203H01P1/208
Inventor 戴永胜朱丹邓良陈相治陈宇
Owner NANJING UNIV OF SCI & TECH