CN207426089U - A kind of ultra-wide band filter with trap characteristic - Google Patents
A kind of ultra-wide band filter with trap characteristic Download PDFInfo
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- CN207426089U CN207426089U CN201721407579.9U CN201721407579U CN207426089U CN 207426089 U CN207426089 U CN 207426089U CN 201721407579 U CN201721407579 U CN 201721407579U CN 207426089 U CN207426089 U CN 207426089U
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- high impedance
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Abstract
The utility model discloses a kind of ultra-wide band filter with trap characteristic, the filter construction including medium substrate and positioned at medium substrate upper surface；One 50 microstrip line（1）Connect the first high impedance line（3）, the 2nd 50 microstrip line the second high impedance line of connection（4）；Toroidal cavity resonator（5）With the one 50 microstrip line（1）The first parallel coupled line is connected on immediate side（6）With the second parallel coupled line（7）, with the 2nd 50 microstrip line（2）The 3rd parallel coupled line is connected on immediate side（8）With the 4th parallel coupled line（9）；First parallel coupled line（6）It is arranged at the first high impedance line（3）With the second parallel coupled line（7）Between, the 3rd parallel coupled line（8）It is arranged at the second high impedance line（4）With the 4th parallel coupled line（9）Between.The utility model can not only realize trap characteristic, also with good pass-band performance and with external characteristics by using follow-on resonator and feeder line collective effect.
Description
Technical field
The utility model is related to microwave device field, a kind of ultra-wide band filter with trap characteristic.
Background technology
With making rapid progress for science and technology, requirement of the people for wireless communication is higher and higher.Ultra wide band (Ultra-
Wideband, UWB) technology with its low-power consumption, the features such as low cost, high-speed, high power capacity, penetration capacity be strong, high safety into
One of research hotspot for Current wireless communication field.With the fast development of the Technology of Ultra, to ultra wide band
Electronic equipment proposes higher requirement, and high reliability, miniaturization have become super broad band radio communication system hair
The inexorable trend of exhibition, this requires circuits while electric property is met, and reduce circuit footprint as far as possible.
Wave filter plays important role in super broad band radio communication system, it plays the important work of selection signal
With being essential critical elements in super broad band radio communication system, its working performance quality directly influences ultra wide band
The integral working of wireless communication system, its size also directly influence the size of super broad band radio communication system.
However, defined in ultra wide band in passband there is some other frequency ranges, such as WLAN (Wireless local-
Area network, WLAN) etc..In order to avoid the interference of this part signal, it is necessary to design the ultra-wide with trap characteristic
Band filter.This is also one of hot and difficult issue in current ultra-wide band filter research.
The ultra-wide band filter of the prior art has following defect and deficiency：（1）Trap is realized by etching ground technology,
The shortcomings that technology, is to be unfavorable for the integrated of circuit；（2）The trap characteristic being difficult to realize in passband；（3）The stopband of wave filter
Characteristic is bad, and selectivity is not high；（4）The size of wave filter is not compact enough, complicated, high processing costs.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of ultra wide band filter with trap characteristic
Ripple device.
The purpose of this utility model is achieved through the following technical solutions：A kind of ultra wide band filter with trap characteristic
Ripple device, the metal ground plate including medium substrate, positioned at medium substrate lower surface and the wave filter positioned at medium substrate upper surface
Structure；The filter construction includes the one 50 microstrip line, the 2nd 50 microstrip line, the first high impedance line, the second high resistant
Anti- line, toroidal cavity resonator, the first parallel coupled line, the second parallel coupled line, the 3rd parallel coupled line, the 4th parallel coupled line and
Wriggle molded line；
One end of one 50 microstrip line is arranged at input port, and one end of the 2nd 50 microstrip line is arranged at defeated
Exit port；The other end of one 50 microstrip line connects the first high impedance line, the other end connection of the 2nd 50 microstrip line
Second high impedance line；The toroidal cavity resonator is arranged at the center of medium substrate upper surface, and the four of toroidal cavity resonator
It is a parallel while respectively corresponding four with medium substrate；Toroidal cavity resonator on the one 50 immediate side of microstrip line
Be connected with the first parallel coupled line and the second parallel coupled line, toroidal cavity resonator on the 2nd 50 immediate side of microstrip line
It is connected with the 3rd parallel coupled line and the 4th parallel coupled line；
First high impedance line, the first parallel coupled line and second parallel coupled line is mutually parallel, and first is parallel
Coupling line is arranged between the first high impedance line and the second parallel coupled line, the second high impedance line, the 3rd parallel coupling
Line and the 4th parallel coupled line are mutually parallel, and the 3rd parallel coupled line is arranged at the second high impedance line and the 4th parallel coupled line
Between；The sinuous molded line loads on the inside of toroidal cavity resonator；
Molded line wriggle in quasi-square wave graphic structure, and the both ends for the molded line that wriggles extend be connected to toroidal cavity resonator not with
Parallel coupled line connection two in from high impedance line closer to that while on.
Further, the relative dielectric constant of the medium substrate is 9.6, thickness 0.8mm.
The beneficial effects of the utility model are：The utility model is by using toroidal cavity resonator and feeder line with loading（50
Microstrip line and high impedance line part）Collective effect can not only realize trap characteristic, also with good pass-band performance and band
External characteristics.Entirely logical in-band insertion loss is relatively low, and also tool there are two transmission zero, has been effectively ensured good outside the band of high band
Out-of-band rejection characteristic, the wave filter have it is highly selective.Meanwhile the wave filter overall dimensions are smaller, and it is compact-sized, it need not
Etching ground, beneficial to integrated.
Description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the utility model simulation architecture schematic diagram.
Specific embodiment
The technical solution of the utility model, but the scope of protection of the utility model are described in further detail below in conjunction with the accompanying drawings
It is not limited to as described below.
As shown in Figure 1, a kind of ultra-wide band filter with trap characteristic, including medium substrate, under medium substrate
The metal ground plate on surface and the filter construction positioned at medium substrate upper surface；The filter construction includes the 1st
Microstrip line 1, the 2nd 50 microstrip line 2, the first high impedance line 3, the second high impedance line 4, toroidal cavity resonator 5, the first parallel coupling
Line 6, the second parallel coupled line 7, the 3rd parallel coupled line 8, the 4th parallel coupled line 9 and sinuous molded line 10；
One end of one 50 microstrip line 1 is arranged at input port, and one end of the 2nd 50 microstrip line 2 is arranged at
Output port；The other end of one 50 microstrip line 1 connects the first high impedance line 3, the other end of the 2nd 50 microstrip line
Connect the second high impedance line 4；The toroidal cavity resonator 5 is arranged at the center of medium substrate upper surface, and annular resonance
Four of device 5 are parallel while respectively corresponding four with medium substrate；Toroidal cavity resonator 5 with the one 50 microstrip line 1 most
Be connected with the first parallel coupled line 6 and the second parallel coupled line 7 on close side, toroidal cavity resonator 5 with the 2nd 50 micro-strip
Line is connected with the 3rd parallel coupled line 8 and the 4th parallel coupled line 9 on 2 immediate side；
First high impedance line 3, the first parallel coupled line 6 and second parallel coupled line 7 is mutually parallel, and first is flat
Row coupling line 6 is arranged between the first high impedance line 3 and the second parallel coupled line 7, and the second high impedance line the 4, the 3rd is flat
8 and the 4th parallel coupled line 9 of row coupling line is mutually parallel, and the 3rd parallel coupled line 8 is arranged at the second high impedance line 4 and the 4th
Between parallel coupled line 9；The sinuous molded line 10 loads on the inside of toroidal cavity resonator 5.
More preferably, in the present embodiment, the dielectric constant of the medium substrate is 9.6, thickness 0.8mm.
Wherein, as an option, the molded line 10 that wriggles is in quasi-square wave graphic structure, and the both ends for the molded line 10 that wriggles extend company
Be connected to be not connected with parallel coupled line two of toroidal cavity resonator 5 in from high impedance line closer to that while on, pass through
Adjust its corresponding size, the performance that can be effectively improved in passband.
In addition, filter construction is arranged at medium substrate upper surface by the way of patch.
The wave filter of the present embodiment can realize trap characteristic.Simulation calculation is carried out to the structure using simulation software ADS,
Obtained simulation result is as shown in Figure 2.As can be seen that the trap of the wave filter is located at 5.8 GHz from figure, with outer two biographies
The position of defeated zero point is located at 12.84 GHz and 13.49 GHz respectively, and good Out-of-band rejection characteristic has been effectively ensured.The filter
The overall dimensions of ripple device are 13mm × 1.4mm, and structure closely, need not use etching ground technology, beneficial to integrated.
The utility model is described by embodiment, but the utility model is not construed as limiting, with reference to this practicality
New description, other variations of the disclosed embodiments, is such as readily apparent that for the professional person of this field, such
Variation should belong within the scope of the utility model claims restriction.
Claims (2)
1. a kind of ultra-wide band filter with trap characteristic, the metal including medium substrate, positioned at medium substrate lower surface connect
Floor and the filter construction positioned at medium substrate upper surface；It is characterized in that：The filter construction includes the 1st
Microstrip line（1）, the 2nd 50 microstrip line（2）, the first high impedance line（3）, the second high impedance line（4）, toroidal cavity resonator（5）,
One parallel coupled line（6）, the second parallel coupled line（7）, the 3rd parallel coupled line（8）, the 4th parallel coupled line（9）And winding type
Line（10）；
One 50 microstrip line（1）One end be arranged at input port, the 2nd 50 microstrip line（2）One end be arranged at
Output port；One 50 microstrip line（1）Other end connect the first high impedance line（3）, the 2nd 50 microstrip line is in addition
One end connects the second high impedance line（4）；The toroidal cavity resonator（5）The center of medium substrate upper surface is arranged at, and
Toroidal cavity resonator（5）Four it is parallel while respectively corresponding four with medium substrate；Toroidal cavity resonator（5）With the 1st
Microstrip line（1）The first parallel coupled line is connected on immediate side（6）With the second parallel coupled line（7）, toroidal cavity resonator
（5）With the 2nd 50 microstrip line（2）The 3rd parallel coupled line is connected on immediate side（8）With the 4th parallel coupled line
（9）；
The first high impedance line（3）, the first parallel coupled line（6）With the second parallel coupled line（7）It is mutually parallel, and first
Parallel coupled line（6）It is arranged at the first high impedance line（3）With the second parallel coupled line（7）Between, the second high impedance line
（4）, the 3rd parallel coupled line（8）With the 4th parallel coupled line（9）It is mutually parallel, and the 3rd parallel coupled line（8）It is arranged at
Two high impedance lines（4）With the 4th parallel coupled line（9）Between；The sinuous molded line（10）Load on toroidal cavity resonator（5）'s
It is internal；
Wriggle molded line（10）In quasi-square wave graphic structure, and the molded line that wriggles（10）Both ends extend and be connected to toroidal cavity resonator
（5）Be not connected with parallel coupled line two in from high impedance line closer to that while on.
2. a kind of ultra-wide band filter with trap characteristic according to claim 1, it is characterised in that：The medium
The relative dielectric constant of substrate is 9.6, thickness 0.8mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721407579.9U CN207426089U (en) | 2017-10-27 | 2017-10-27 | A kind of ultra-wide band filter with trap characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721407579.9U CN207426089U (en) | 2017-10-27 | 2017-10-27 | A kind of ultra-wide band filter with trap characteristic |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207426089U true CN207426089U (en) | 2018-05-29 |
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ID=62309176
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721407579.9U Expired - Fee Related CN207426089U (en) | 2017-10-27 | 2017-10-27 | A kind of ultra-wide band filter with trap characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207426089U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638395A (en) * | 2018-12-06 | 2019-04-16 | 西安电子科技大学 | A kind of micro band superwide band bandpass filter |
| CN112332054A (en) * | 2020-11-18 | 2021-02-05 | 辽宁工程技术大学 | Dual-passband band-pass filter based on asymmetric coupling line |
-
2017
- 2017-10-27 CN CN201721407579.9U patent/CN207426089U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109638395A (en) * | 2018-12-06 | 2019-04-16 | 西安电子科技大学 | A kind of micro band superwide band bandpass filter |
| CN109638395B (en) * | 2018-12-06 | 2020-02-07 | 西安电子科技大学 | Microstrip ultra wide band pass filter |
| CN112332054A (en) * | 2020-11-18 | 2021-02-05 | 辽宁工程技术大学 | Dual-passband band-pass filter based on asymmetric coupling line |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180529 Termination date: 20181027 |