CN102544652B - Ultra-wide-band filter with high selectivity and ultrahigh attenuation band restrain effect - Google Patents
Ultra-wide-band filter with high selectivity and ultrahigh attenuation band restrain effect Download PDFInfo
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- CN102544652B CN102544652B CN201210017994.9A CN201210017994A CN102544652B CN 102544652 B CN102544652 B CN 102544652B CN 201210017994 A CN201210017994 A CN 201210017994A CN 102544652 B CN102544652 B CN 102544652B
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Abstract
The invention provides an ultra-wide-band filter with high selectivity and an ultrahigh attenuation band restrain effect, which is composed of a first input/output port, a second input/output port, an interlayer medium substrate, an upper layer micro-strip structure arranged on the interlayer medium substrate and an underlying metal floor board. The upper layer micro-strip structure comprises a first feed network, a multi branch knot loading multimode resonator and a second feed network. The multi branch knot loading multimode resonator of the upper layer micro-strip structure has five resonance modes in an ultra-wide-band frequency band scope, a transmission zero is generated above and below a passband respectively, and passband selectivity is greatly improved. In addition, generated zero and frequency doubling zero of the zero restrains high sequence resonance modes of the multimode resonator, and restraining effects of an upper attenuation band of the passband are greatly broadened. The ultra-wide-band filter has good passband character, high passband selectivity and ultra-high attenuation band restraining effect, and is applicable to ultra-wide-band wireless communication systems with high standard communication.
Description
Technical field
The present invention relates to the radio-frequency filter technical field in radio communication, more particularly, relate to a kind of ultra-wide band filter with high selectivity and superelevation stopband inhibition.
Background technology
Along with developing rapidly of the communication technology, people are not only simple speech exchange to the requirement of radio communication, but pursue the wireless communication system of the big data quantities such as HD video and high security.The features such as ultra broadband (UWB) wireless communication technology is simple with its system configuration, cost is low, power consumption is little, transmission rate is high, good confidentiality become a study hotspot of current wireless communication field.The Technology of Ultra original form be directly utilize pulsewidth to be nanosecond or subnanosecond level pulse as the pulse wireless power technology of information carrier, be mainly used in the wireless system of radar and low intercepting and capturing/low investigation rate.Along with the development of microelectronic component technology, UWB technology starts to be applied to civil area, causes the upsurge to its research, development and application in the world, and is considered to the revolutionary technology of next generation wireless communication.In February, 2002, FCC (FCC) have approved the application of UWB technology in short-distance wireless communication field, has opened this frequency range of 3.1GHz to 10.6GHz as commercialization.UWB technology has broad application prospects, and the various fields such as such as Technology in High-speed WPAN, wireless ether interface link, intelligent wireless local area network have a wide range of applications.As one of Primary Component in UWB communication system, ultra-wide band filter is extensively studied.
The current major design method of ultra-wide band filter comprises: 1, based on short circuit minor matters loaded transmission line structure.This type of pass band width can load number by short circuit minor matters and control, and designed ultra-wide band filter size is large, passband poor selectivity, and stopband suppresses poor, and Insertion Loss also increases with minor matters increased number.2, cascade high pass, low pass (band leads to, be with resistance) filter realize ultra broadband.This type of ultra-wide band filter same size is larger, is unfavorable for the miniaturized application of radio ultra wide band system.3, multimode resonator design ultra-wide band filter.Step electric impedance resonator in 2005 by first Application in ultra-wide band filter design, thereafter, in order to improve its passband selectivity, Out-of-band rejections etc., minor matters load multimode resonator, micro-band/co-planar waveguide multi-mode structure by succession be applied in ultra-wide band filter design in.But the ultra-wide band filter how designing pass-band performance, high selectivity and the high stopband suppression characteristic had is still the study hotspot of current ultra-wide band filter design.
The realization of ultra-wide band filter mentions certain methods in some patents, as the ultra-wide band filter loaded based on step electric impedance resonator that the patent No. is 201020585865.6, this patent is a kind of ultra-wide band filter utilizing step electric impedance resonator to design.This step electric impedance resonator is half-wave resonator centre position loading stepped impedance open circuit minor matters, can respectively produce a transmission zero, greatly improve the selectivity of passband by stepped impedance open circuit minor matters at the upper and lower sides of ultra broadband passband.But this multimode resonator only has three modes of resonance in passband, the transmission characteristic in passband needs to improve further; The upper stopband suppressing bandwidth of designed ultra-wide band filter is also very narrow, and this is also need to improve.
Summary of the invention
The object of the invention is to overcome shortcoming of the prior art with not enough, a kind of ultra-wide band filter with high selectivity and superelevation stopband inhibition is provided, the present invention loads multimode resonator by adopting novel racemosus joint, design the ultra-wide band filter of the stopband inhibition characteristic of the pass-band performance, high passband selectivity and the superelevation that have had, this ultra-wide band filter is particularly suitable for being applied in the ultra-wideband communication system in short-distance wireless communication.
In order to achieve the above object, the present invention is achieved by following technical proposals: a kind of ultra-wide band filter with high selectivity and superelevation stopband inhibition, is characterized in that: be made up of the first input/output end port, the second input/output end port, interlayer substrate, the upper-layer micro-strip structure being arranged on interlayer upper surface of base plate and the underlying metal floor that is arranged on interlayer substrate bottom surface; Described upper-layer micro-strip structure comprises the first feeding network, racemosus joint loads multimode resonator and the second feeding network; Described first feeding network is made up of uniform transmission line three, uniform transmission line four and uniform transmission line five, one end of described uniform transmission line three is connected with the first input/output end port, the other end is connected with uniform transmission line five with uniform transmission line four, and uniform transmission line four is parallel to uniform transmission line five; Second feeding network is made up of uniform transmission line six, uniform transmission line seven and uniform transmission line eight, one end of described uniform transmission line six is connected with the second input/output end port, the other end is connected with uniform transmission line eight with uniform transmission line seven, and uniform transmission line seven is parallel to uniform transmission line eight; Described racemosus joint loads multimode resonator and is made up of uniform transmission line nine, uniform transmission line ten, uniform transmission line 11, uniform transmission line 12, uniform transmission line 13, non uniform transmission line 14 and non uniform transmission line 15, and described non uniform transmission line 14 and non uniform transmission line 15 are arranged on the centre position of uniform transmission line nine and lay respectively at the both sides of uniform transmission line nine; Non uniform transmission line 14 and non uniform transmission line 15 form by two sections of not wide uniform transmission lines successively stack combinations, and are all connected with uniform transmission line nine by narrower one section of uniform transmission line; Described uniform transmission line ten, uniform transmission line 11, uniform transmission line 12 and uniform transmission line 13 are four sections of identical uniform transmission lines and are carried on uniform transmission line nine symmetrically, wherein uniform transmission line ten and uniform transmission line 11 are positioned at the side of non uniform transmission line 14 and non uniform transmission line 15, and uniform transmission line 12 and uniform transmission line 13 are positioned at the opposite side of non uniform transmission line 14 and non uniform transmission line 15; One end of described uniform transmission line nine is inserted between the uniform transmission line four of the first feeding network and uniform transmission line five, and the other end inserts between the uniform transmission line seven of the second feeding network and uniform transmission line eight;
Described non uniform transmission line 14 respectively produces a transmission zero in the upper and lower both sides of ultra broadband passband; Frequency multiplication zero point of described transmission zero and the transmission zero produced by non uniform transmission line 15 and uniform transmission line ten, uniform transmission line 11, uniform transmission line 12 or uniform transmission line 13, be positioned at the upper stopband of ultra broadband passband.
In such scheme, non uniform transmission line 14 can respectively produce a transmission zero in the upper and lower both sides of ultra broadband passband, improves the passband selectivity of filter greatly; On the other hand, frequency multiplication zero point at above-mentioned zero point and the transmission zero produced by the non uniform transmission line 15 loaded and uniform transmission line ten or uniform transmission line 11 or uniform transmission line 12 or uniform transmission line 13, be positioned at the upper stopband of ultra broadband passband, these transmission zeros have expanded bandwidth of rejection, achieve the stopband inhibition of superelevation.
More particularly, described first input/output end port and the second input/output end port are on same level line, and symmetrical about medial axis, and described medial axis is positioned at uniform transmission line nine mid-point position and perpendicular to uniform transmission line nine.
It is five mould resonators that described racemosus joint loads multimode resonator.This resonator (3.1GHz-10.6GHz) in ultra wideband frequency has five modes of resonance, ensure that the pass-band performance that designed ultra-wide band filter has had.
Described underlying metal floor comprises the first defect ground unit 16, second defect ground unit 17 and metal unit 18; Described first defect ground unit and the second defect ground unit are the air element etching formation in metal unit.
Described first defect ground unit is arranged on immediately below parallel three lines that are made up of uniform transmission line four, uniform transmission line five and uniform transmission line nine; Described second defect ground unit is arranged on immediately below parallel three lines that are made up of uniform transmission line seven, uniform transmission line eight and uniform transmission line nine.
Compared with prior art, tool of the present invention has the following advantages and beneficial effect:
1, the present invention adopts racemosus to save and loads multimode resonator, has five modes of resonance, make its pass-band performance better in ultra wideband frequency.
2, the centre that racemosus joint of the present invention loads multimode resonator is that asymmetrical stepped impedance minor matters load, and one of them stepped impedance minor matters can respectively produce a transmission zero in the upper and lower side of passband, greatly improves the selectivity of passband.
3, the present invention by each load minor matters produce transmission zero and frequency multiplication be positioned at stopband on passband zero point, these transmission zeros inhibit the higher modes of multimode resonator, obtain the stopband inhibition of superelevation.
4, the ultra-wide band filter in the present invention adopts planar circuit structure, and be suitable for other devices in radio ultra wide band system integrated, in addition, circuit integrity size is little, compact conformation, and space availability ratio is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of ultra-wide band filter of the present invention;
Fig. 2 is the upper-layer micro-strip structure schematic diagram of ultra-wide band filter of the present invention;
Fig. 3 is the underlying metal ground structure schematic diagram of ultra-wide band filter of the present invention;
Fig. 4 is the frequency response curve schematic diagram of ultra-wide band filter of the present invention at frequency range 0-16GHz;
Fig. 5 is the frequency response curve schematic diagram of ultra-wide band filter of the present invention at frequency range 0-39GHz.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Embodiment
The structural representation of ultra-wide band filter of the present invention as shown in Figure 1, the stopband inhibition of the pass-band performance that this ultra-wide band filter has had, high passband selectivity and superelevation, this ultra-wide band filter is made up of the first input/output end port 1, second input/output end port 2, upper-layer micro-strip structure, interlayer substrate and underlying metal floor, and wherein upper-layer micro-strip structure and underlying metal floor are attached to interlayer substrate above and below respectively.
As shown in Figure 2, upper-layer micro-strip structure comprises the first feeding network, racemosus joint loads multimode resonator, the second feeding network.Wherein the first feeding network is made up of uniform transmission line 33, uniform transmission line 44 and uniform transmission line 55, wherein one end of uniform transmission line 33 is connected with the first input/output end port 1, and its other end is connected with uniform transmission line 55 with uniform transmission line 44 respectively.Second feeding network is made up of uniform transmission line 66, uniform transmission line 77 and uniform transmission line 88, and wherein one end of uniform transmission line 66 is connected with the second input/output end port 2, and its other end is connected with uniform transmission line 88 with uniform transmission line 77 respectively.Racemosus joint loads multimode resonator and is made up of uniform transmission line 99, uniform transmission line 10, uniform transmission line 11, uniform transmission line 12, uniform transmission line 13, non uniform transmission line 14 and non uniform transmission line 15, wherein non uniform transmission line 14 and non uniform transmission line 15 are in the centre position of uniform transmission line 99, and combined by two sections of not wide uniform transmission lines respectively, all be connected with uniform transmission line 99 by narrower one section of uniform transmission line, and lay respectively at the both sides up and down of uniform transmission line 99; Uniform transmission line 10, uniform transmission line 11, uniform transmission line 12 and uniform transmission line 13 are four sections of identical uniform transmission lines and are carried on uniform transmission line 99 symmetrically, wherein, uniform transmission line 10 and uniform transmission line 11 are positioned at the side of non uniform transmission line 14 and non uniform transmission line 15, and uniform transmission line 12 and uniform transmission line 13 are positioned at the opposite side of non uniform transmission line 14 and non uniform transmission line 15.First input/output end port 1 and the second input/output end port 2 are on same level line, and symmetrical about the medial axis of interlayer substrate, and medial axis is perpendicular to uniform transmission line 99.First feeding network and the second feeding network are symmetrical about the medial axis of interlayer substrate, and medial axis is perpendicular to uniform transmission line 99.One end of uniform transmission line 99 is inserted between the uniform transmission line 44 of the first feeding network and uniform transmission line 55, and the other end inserts between the uniform transmission line 77 of the second feeding network and uniform transmission line 88.
As shown in Figure 3, underlying metal floor comprises the first defect ground unit 16, second defect ground unit 17 and metal unit 18 to the underlying metal ground structure schematic diagram of ultra-wide band filter of the present invention; Wherein, the first unit 16, second defect ground, defect ground unit 17 is all that etching removes corresponding planform in metal unit 18, forms air element.As shown in Figure 1, the first defect ground unit 16 is positioned at immediately below parallel three lines that are made up of uniform transmission line 44, uniform transmission line 55 and uniform transmission line 99; Second defect ground unit 17 is positioned at immediately below parallel three lines that are made up of uniform transmission line 77, uniform transmission line 88 and uniform transmission line 99.
In the present embodiment, the dielectric constant of middle level medium substrate is 2.55, and thickness is 0.8mm.In this ultra-wide band filter, the live width of uniform transmission line 99 is set to 0.5mm, and length is half guide wavelength under mode frequency 4.61GHz, i.e. 22.2mm.Racemosus saves the mode profile that the uniform transmission line 10, uniform transmission line 11, uniform transmission line 12 and the uniform transmission line 13 that load multimode resonator can control this multimode resonator, and its live width is all set to 1.0mm, and length is all set to 2.65mm.Non uniform transmission line 14 can respectively produce a transmission zero in passband the upper side and lower side, greatly improve the selectivity of ultra broadband passband, and its frequency multiplication is positioned at stopband on passband zero point, also the bandwidth of rejection of this ultra-wide band filter has been expanded, the low-resistance line live width of non uniform transmission line 14 is 1.1mm, line length is 8.9mm, and its high resistant line part live width is 4.78mm, and live width is 4.23mm.The non uniform transmission line 15 being positioned at the downside of uniform transmission line 99 can produce transmission zero by stopband on passband, and improve stopband inhibition, its low-resistance line live width is 0.28mm, and line length is 0.33mm, and high resistant line part live width is 1.4mm, and line length is 1.8mm.
Namely the frequency response characteristic of filter comprises transmission characteristic | S21| amplitude response, reflection characteristic namely | S11| amplitude response, in addition, also requires to have smooth delay character in passband for ultra-wide band filter.Fig. 4 ultra-wide band filter of the present invention is at the frequency response curve schematic diagram of frequency range 0-16GHz, its 3-dB bandwidth contains the frequency range from 3.1GHz to 11.1GHz, have ultra broadband bandpass characteristics, the Insertion Loss wherein in 3.1GHz to 10.6GHz frequency band is less than 1.0dB.Respectively there is a transmission zero at the upside 2.8GHz of passband and 11.5GHz place, downside, there is good passband selectivity.
Fig. 5 is the frequency response curve schematic diagram of ultra-wide band filter of the present invention at frequency range 0-39GHz.-20dB the bandwidth of rejection of this filter is extended to 29.7GHz, has very high stopband inhibition.Meanwhile, the passband delay character of this filter is good.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (5)
1. there is a ultra-wide band filter for high selectivity and superelevation stopband inhibition, it is characterized in that: be made up of the first input/output end port, the second input/output end port, interlayer substrate, the upper-layer micro-strip structure being arranged on interlayer upper surface of base plate and the underlying metal floor that is arranged on interlayer substrate bottom surface; Described upper-layer micro-strip structure comprises the first feeding network, racemosus joint loads multimode resonator and the second feeding network; Described first feeding network is made up of uniform transmission line three, uniform transmission line four and uniform transmission line five, one end of described uniform transmission line three is connected with the first input/output end port, the other end is connected with uniform transmission line five with uniform transmission line four, and uniform transmission line four is parallel to uniform transmission line five; Second feeding network is made up of uniform transmission line six, uniform transmission line seven and uniform transmission line eight, one end of described uniform transmission line six is connected with the second input/output end port, the other end is connected with uniform transmission line eight with uniform transmission line seven, and uniform transmission line seven is parallel to uniform transmission line eight; Described racemosus joint loads multimode resonator and is made up of uniform transmission line nine, uniform transmission line ten, uniform transmission line 11, uniform transmission line 12, uniform transmission line 13, non uniform transmission line 14 and non uniform transmission line 15, and described non uniform transmission line 14 and non uniform transmission line 15 are arranged on the centre position of uniform transmission line nine and lay respectively at the both sides of uniform transmission line nine; Non uniform transmission line 14 and non uniform transmission line 15 form by two sections of not wide uniform transmission lines successively stack combinations, and are all connected with uniform transmission line nine by narrower one section of uniform transmission line; Described uniform transmission line ten, uniform transmission line 11, uniform transmission line 12 and uniform transmission line 13 are four sections of identical uniform transmission lines and are carried on uniform transmission line nine symmetrically, wherein uniform transmission line ten and uniform transmission line 11 are positioned at the side of non uniform transmission line 14 and non uniform transmission line 15, and uniform transmission line 12 and uniform transmission line 13 are positioned at the opposite side of non uniform transmission line 14 and non uniform transmission line 15; One end of described uniform transmission line nine is inserted between the uniform transmission line four of the first feeding network and uniform transmission line five, and the other end inserts between the uniform transmission line seven of the second feeding network and uniform transmission line eight;
Described non uniform transmission line 14 respectively produces a transmission zero in the upper and lower both sides of ultra broadband passband; Frequency multiplication zero point of described transmission zero and the transmission zero produced by non uniform transmission line 15 and uniform transmission line ten, uniform transmission line 11, uniform transmission line 12 or uniform transmission line 13, be positioned at the upper stopband of ultra broadband passband.
2. the ultra-wide band filter with high selectivity and superelevation stopband inhibition according to claim 1, it is characterized in that: described first input/output end port and the second input/output end port are on same level line, and symmetrical about medial axis, described medial axis is positioned at uniform transmission line nine mid-point position and perpendicular to uniform transmission line nine.
3. the ultra-wide band filter with high selectivity and superelevation stopband inhibition according to claim 1, is characterized in that: it is five mould resonators that described racemosus joint loads multimode resonator.
4. the ultra-wide band filter with high selectivity and superelevation stopband inhibition according to claim 1, is characterized in that: described underlying metal floor comprises the first defect ground unit, the second defect ground unit and metal unit; Described first defect ground unit and the second defect ground unit are the air element etching formation in metal unit.
5. the ultra-wide band filter with high selectivity and superelevation stopband inhibition according to claim 4, is characterized in that: described first defect ground unit is arranged on immediately below parallel three lines that are made up of uniform transmission line four, uniform transmission line five and uniform transmission line nine; Described second defect ground unit is arranged on immediately below parallel three lines that are made up of uniform transmission line seven, uniform transmission line eight and uniform transmission line nine.
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103035986B (en) * | 2012-12-15 | 2015-06-03 | 华南理工大学 | Ultra wide-band filter based on double minor matters loading harmonic oscillator |
| CN103151582A (en) * | 2013-02-27 | 2013-06-12 | 西安电子工程研究所 | Micro wave and micro band band-pass filter for miniature large double-frequency ratio wide band |
| CN104051830A (en) * | 2014-06-24 | 2014-09-17 | 中国科学院微电子研究所 | Multimode broadband band-pass filter |
| CN104577268B (en) * | 2015-01-04 | 2017-06-06 | 华南理工大学 | Plane low pass band logical triplexer |
| CN105070990B (en) * | 2015-08-13 | 2018-03-09 | 电子科技大学 | A kind of micro band superwide band bandpass filter based on new king's font multimode resonator |
| CN107395224A (en) * | 2017-06-23 | 2017-11-24 | 深圳市景程信息科技有限公司 | Sender unit with three minor matters coupling microstrip cable architectures of loading |
| CN207038672U (en) * | 2017-06-23 | 2018-02-23 | 深圳市景程信息科技有限公司 | With the broadband band-pass filter for expanding relative bandwidth |
| CN107395223A (en) * | 2017-06-23 | 2017-11-24 | 深圳市景程信息科技有限公司 | Sender unit with the coupling of three minor matters and double minor matters matching microstrip line construction |
| CN107394321A (en) * | 2017-06-23 | 2017-11-24 | 深圳市景程信息科技有限公司 | Load the broadband band-pass filter of three minor matters coupled microstrip lines |
| CN107146932B (en) * | 2017-06-27 | 2019-06-21 | 南京理工大学 | Ultra wide band bandpass filter based on parallel coupled line |
| CN113611992B (en) * | 2021-05-07 | 2022-07-15 | 电子科技大学 | High-frequency reconfigurable microstrip band-pass filter |
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| CN202434678U (en) * | 2012-01-18 | 2012-09-12 | 华南理工大学 | Ultra-wideband filter with high selectivity and ultra-high stopband restraining effect |
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| JP2003347896A (en) * | 2002-05-30 | 2003-12-05 | Toyo Commun Equip Co Ltd | Surface acoustic wave filter |
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|---|
| 吴小虎,褚庆昕.基于非对称阶梯阻抗加载多模谐振器的超宽带带通滤波器.《2011年全国微波毫米波会议论文集(上册)》.2011,1-4页. * |
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