Dual-band narrow-band band-pass dielectric filter
A technology of dielectric filter and dielectric resonator, which is applied to waveguide-type devices, electrical components, circuits, etc., can solve the problems of difficult to achieve high Q value, large filter size, poor temperature drift coefficient, etc., and achieve good temperature drift. Performance, light weight, high Q effect
Inactive Publication Date: 2016-06-01
SOUTHWEST JIAOTONG UNIV
View PDF6 Cites 3 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] The combination of two bandpass filters with different frequencies will result in a larger filter size and an additional connected network; it is difficult to achieve a high Q value for a dual-band filter implemented using a microstrip resonator; use a metal cavity The dielectric resonator of the body realizes the dual-frequency filter, but its weight is large and the temperature drift coefficient is poor
Generally speaking, it is difficult for existing dual-band bandpass filters to meet the requirements of small size and simple structure, high Q value and good temperature drift performance at the same time, and it is urgent to improve
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 Construction
[0022] The present invention will be further described below with reference to the accompanying drawings and examples, and the embodiments of the present invention include but not limited to the following examples.
[0023] Such as Figure 1 ~ Figure 3 As shown, it shows a preferred embodiment of a novel dual-band narrowband bandpass dielectric filter of the present invention. Two rectangular parallelepiped dielectric resonators 5 are placed symmetrically inside the rectangular parallelepiped dielectric cavity 4 covered with metal plating, and the dielectric cavity 4 and the dielectric resonator 5 are made of ceramic materials; the metal top cover plate 7 is fastened to the dielectric cavity On the top of the body 4, a metal coupling screw 2 rotatable through the metal top cover plate for adjusting the coupling amount between the two dielectric resonators is arranged at the middle position between the two dielectric resonators, and at the outer ends of the two dielectric reson...
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 discloses a dual-band narrow-band band-pass dielectric filter. The dielectric filter comprises a dielectric cavity body, a dielectric resonator and a cover plate, wherein a coupling threaded rod for adjusting coupling quantity is arranged on the cover plate; an input / output apparatus is arranged on the top cover plate; the dielectric resonator and the dielectric cavity body are made from the same kind of ceramic material; the dielectric resonator and the dielectric cavity body are connected to form an integral body; the dielectric resonator adopts a cuboid structure; an air cavity is formed in the dielectric cavity body; air is full of the periphery of the resonator; and the top cover plate is made from a metallic material or a metallic compound material. The dual-band narrow-band band-pass dielectric filter has the advantages of simple structure, light weight, small dimensions, easy manufacturing, easy mass production and good performance.
Description
Technical field: [0001] The invention relates to the technical field of wireless communication, in particular to a novel dual-frequency narrowband bandpass dielectric filter. Background technique [0002] In recent years, with the rapid development of wireless communication systems, people continue to propose new standards and develop new technologies for communication systems. From the early GSM, CDMA, WCDMA to the current TD-SCDMA, WLAN, WiMAX, etc., microwave frequency band division is getting thinner. The existing single-band signal can no longer meet the needs of modern communication systems, and dual-channel signals have gradually become the main mode of communication systems. The filter is a key device in the radio frequency communication system, and it needs to be improved to make it a dual-band bandpass filter. [0003] The easiest way to design a dual-band filter is to combine two band-pass filters with different frequencies to achieve a dual-band band-pass filte...
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 IPC IPC(8): H01P1/208
CPCH01P1/2084
Inventor 吴呈龙林文斌陈彦铮
Owner SOUTHWEST JIAOTONG UNIV