Ultra Wideband Filter with Triple Notch Function
An ultra-wideband filter and triple-notch technology, which is applied in waveguide devices, electrical components, circuits, etc., can solve the problems of increasing filter size, reduce circuit size, improve passband selectivity, and have flexible and diverse applications Effect
Active Publication Date: 2017-09-22
XIAN UNIV OF TECH
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Problems solved by technology
[0006] The purpose of the present invention is to provide a kind of ultra-wideband filter with triple notch function, solves the problem that the ultra-wideband filter in the prior art needs to generate notch by introducing the coupling or loading of external circuit, so that the size of the filter is greatly increased additional questions
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[0027] refer to figure 2 , the ultra-wideband three-notch filter of the present invention is applied in the ultra-wideband communication system receiver, the main structure of receiver is, comprises ultra-wide-band antenna 1, and ultra-wide-band antenna 1 passes through (ultra-wide-band low-noise) amplifier-2, Amplifier two 3, ultra-wideband notch filter one 4, down-conversion circuit 5, ultra-wideband notch filter two 6, amplifier three 7 are connected with A / D conversion 11, and A / D conversion 11 communicates with microprocessor through relevant channel 13 The device 12 and the memory 14 are connected to each other at the same time, and the microprocessor 12 and the memory 14 are connected to each other; in addition, the reference crystal oscillator 8 is connected to the down-conversion circuit 5 (another input terminal) through the frequency synthesizer 9, and the amplifier 3 7 itself is connected to an AGC module 10.
[0028] Above-mentioned ultra-wideband antenna 1 and ...
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The invention discloses an ultra-broadband filter with triple-notch function, which comprises a ring resonator. Two microstrip lines are respectively fixed and fixed symmetrically along the diameter on both sides of the outer circle of the ring resonator, and the two microstrip lines on each side are Parallel coupling, all four microstrip lines have the same structural size; a feeder line is inserted between the two microstrip lines on each side, and the outer end of the feeder line is drawn from the feeder port; an open branch is embedded in a feeder line on each side, That is, the left open-circuit branch and the right open-circuit branch, the direction of one open-circuit branch on each side extends from the respective feeder ports to the direction of the ring resonator. The device of the invention can flexibly adjust the three notch frequencies and the high-frequency out-of-band zero point, and the application occasions are more flexible and diverse, and play an important role.
Description
technical field [0001] The invention belongs to the technical field of microwave microstrip filters, and is a filter with a notch function made of a microstrip line and operating in an ultra-wideband frequency band, in particular to an ultra-wideband filter with a triple-notch function. Background technique [0002] Ultra-wideband (UWB) technology is an emerging wireless communication technology in recent years. Since the US Federal Communications Commission (FCC) approved the frequency band from 3.1GHz to 10.6GHz for commercial communication in 2002, UWB communication technology It has received more and more attention. With the rapid development of ultra-wideband wireless communication technology, higher requirements have been put forward for ultra-wideband wireless communication electronic equipment. High reliability and miniaturization have become the key points for the development of ultra-wideband wireless communication systems. This is an inevitable trend, which requir...
Claims
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IPC IPC(8): H01P1/203
Inventor 席晓莉师晓敏
Owner XIAN UNIV OF TECH