A Bandpass Filter Based on T-shaped Stub Loaded Half-Wavelength Resonators
A resonator, half-wavelength technology, applied in the field of ultra-broadband communication, to achieve the effect of small size, excellent frequency selectivity, and good out-of-band suppression
Inactive Publication Date: 2018-03-06
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] The purpose of the present invention is to overcome the deficiencies of the existing ultra-wideband bandpass filter, providing a microstrip ultra-wideband bandpass filter based on T-shaped stub loaded half-wavelength resonators
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
[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the embodiments of the present invention are not limited thereto. The positive side of the example is as image 3 As shown, the following patterns are included in the metal upper cladding layer (I) of the microstrip: input feeder (1), first gradient impedance transmission line section (11), third open transmission line section (12), fourth open transmission line section ( 13), the first open-circuit quarter-wavelength transmission line section (14), the first open-circuit transmission line section (31), the terminal open-circuit T-shaped structure (32), the transmission line section (33) with both ends short-circuited, the first metallized pass hole (34), second metallized through hole (35), terminal short-circuit T-shaped structure (36), third metallized through hole (37), fourth metallized through hole (38), second open transmission line se...
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
UWB filter is a key device in UWB communication system, which determines the overall performance of the system. The invention relates to a microstrip ultra-broadband bandpass filter, which is based on a novel T-shaped stub-loaded half-wavelength resonator, and is characterized in that: a first open-circuit transmission line section (31) and a second open-circuit transmission line section (39) are formed A half-wavelength resonator with an open-terminated T-shaped structure (32) loaded in the middle; the open-ended T-shaped structure (32) is coupled with a transmission line section (33) that is short-circuited at both ends, and the short-circuit passes through the first metallized through hole ( 34) and the second metallized via hole (35); at the same time, a terminal short-circuit T-shaped structure (36) is loaded in the middle of the half-wavelength resonator, and the short circuit passes through the third metallized via hole (37) and the fourth metallized Through hole (38) realizes. In addition, the frequency selectivity of the filter is improved by connecting an open-circuit quarter-wavelength transmission line section at the input and output ports of the filter. Research shows that the ultra-wideband bandpass filter of the present invention has the advantages of excellent frequency characteristics and the like.
Description
technical field [0001] The invention belongs to the technical field of ultra-wideband communication, and in particular relates to a microstrip ultra-wideband bandpass filter based on a T-shaped stub-loaded half-wavelength resonator. Background technique [0002] In 2002, the Federal Communications Commission (FCC) of the United States opened the frequency band between 3.1 GHz and 10.6 GHz for applications in the communication field. Because of its advantages such as high transmission rate and low transmission loss, UWB communication has received extensive attention and developed rapidly. As a key device in an ultra-wideband communication system, the performance of the ultra-wideband bandpass filter determines the overall performance of the system. However, designing small, high-performance, and low-cost filters remains a major challenge. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the existing ultra-wideband ...
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): H01P1/203
Inventor 肖飞李伟焦益民张亭唐小宏
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA