CN101533939B - Collaboratively designed double frequency-band antenna-filter device - Google Patents
Collaboratively designed double frequency-band antenna-filter device Download PDFInfo
- Publication number
- CN101533939B CN101533939B CN200910074123A CN200910074123A CN101533939B CN 101533939 B CN101533939 B CN 101533939B CN 200910074123 A CN200910074123 A CN 200910074123A CN 200910074123 A CN200910074123 A CN 200910074123A CN 101533939 B CN101533939 B CN 101533939B
- Authority
- CN
- China
- Prior art keywords
- conductive plate
- wavelength
- double frequency
- filter
- substrate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
- Waveguide Aerials (AREA)
Abstract
The invention relates to the miniaturization design of an antenna and an RF front-end in a wireless communication system, in particular to a collaboratively designed double frequency-band antenna-filter device, solving the problem that the current antenna-filter devices have large volume and low degree of integration or miniaturization. The device comprises a first conductive plate, a first substrate, an earth plate, a second substrate and a second conductive plate, which are laminated in sequence; wherein, the first conductive plate is a rectangular radiation sticker with two C-shaped gas and feed holes thereon; the second conductive plate is composed of two stepped impedance resonators with 1/4 wavelength and two uniform impedance resonators with 1/4 wavelength; the first conductive plate is connected with one of the stepped impedance resonators with 1/4 wavelength of the second conductive plate through a metal via hole, and the stepped impedance resonators with 1/4 wavelength and the uniform impedance resonators with 1/4 wavelength of the second conductive plate are connected respectively by a metal via hole and the earth plate. The miniaturization design reduces the volume of the antenna-filter device, improves the degree of integration and miniaturization of the device and is suitable for dual-band wireless communication systems.
Description
Technical field
The present invention relates to wireless communication technology, the particularly miniaturization Design of antenna and radio-frequency front-end in the wireless communication system is specially a kind of double frequency-band antenna-filter device of collaborative design.
Background technology
Along with development of wireless communication devices, portable terminal develops into a personalized smart machine progressively by simple means of communication, can listen to the FM program, also supports TV reception; Wireless terminal still is the palm small computer simultaneously, realizes high speed Internet access at any time.In addition, the later system (B3G) of 3G realizes that with the radio communication of integrated various criterion many standards insert as required, and between different system seamless switching, realize the fusion of multiple business.
The multimedia function of portable terminal, high-speed data service and many standards insert requirement as required; Make antenna and radio frequency receiving and transmitting front end all face great challenge; As the necessary passage of signal turnover, the radio frequency receiving and transmitting front end of wireless terminal and antenna must be realized multiband work on present basis; Must improve integrated level simultaneously, further realize miniaturization.
Miniaturization method at present commonly used can be summed up as two kinds, and a kind of is system-in package for RF system, passive and the active device of radio system is embedded in the multilayer dielectricity, thereby in an encapsulation function of realization system; A kind of in addition is the collaborative design of radio system, and the multiple function that radio-frequency front-end requires is integrated in the restriction at the 50 Ω normal impedance interfaces that promptly break traditions, and original a plurality of devices are integrated into a device, in a device, realizes multiple function.
The outstanding advantage of collaborative design is fundamentally to change circuit structure, and the integrated circuit function reduces device count, thereby reduces the volume and weight of radio system, reduces the cost of radio system.Simultaneously, collaborative design has reduced because the loss that match circuit brings has increased design freedom, thereby improved the performance of radio system.
One of main mode of antenna and radio frequency receiving and transmitting front end collaborative design is the collaborative design of antenna and filter (perhaps also comprising low noise amplifier).In October, 2002; People such as Queudet have delivered " Integration of pass-bandfilters in patch antennas " at EuropeanMicrowave Conference (european microwave meeting), this article proposition single-band antenna and filter are in the conception of same plane collaborative design.Fig. 1 shows the structural representation of this antenna-filter apparatus.As shown in Figure 1, antenna radiation unit 21 and filter signal layer 22 are positioned at the upper surface of medium substrate 23 at same metal level, and ground plate 24 is positioned at the lower surface of medium substrate 23.Because antenna radiation unit 21 is positioned at same plane with filter signal layer 22; Though reduced the loss that match circuit brings; But the antenna of this collaborative design-filter apparatus volume is bigger; Integrated level or degree of miniaturization are still not high, can't satisfy the requirement of the volume and weight that reduces radio system to greatest extent.
Summary of the invention
The present invention is big for the antenna one filter apparatus volume that solves existing collaborative design, integrated level or the not high problem of degree of miniaturization, and the double frequency-band antenna-filter device of the higher relatively collaborative design of a kind of integrated level or degree of miniaturization is provided.
Another object of the present invention is through optimizing structure, and regulates the impedance that is connected between antenna and the filter, improves the bandwidth of the double frequency-band antenna-filter device of collaborative design, and then improves the performance of radio system.
The present invention adopts following technical scheme to realize: the double frequency-band antenna-filter device of collaborative design; Comprise first conductive plate, first substrate, ground plate, second substrate and second conductive plate that stack gradually from top to bottom; First conductive plate is for having the rectangular radiation patch of two C shape slits and power feed hole on it; Selecting the paster center is the origin of coordinates; Two C shape slits are about the initial point left-right symmetric; Second conductive plate is made up of two 1/4 wavelength step electric impedance resonator and two 1/4 wavelength uniform impedance resonators that have signal port on it respectively; Have a circular slit on the ground plate; The power feed hole of first conductive plate connects (through metallic vias two conductors that are positioned on the different aspects being connected is the ordinary skill in the art, promptly on each aspect between two conductors, has metallic vias and connects the conductor on the different aspects) with the signal port of one of them 1/4 wavelength step electric impedance resonator of second conductive plate through the metallic vias that is connected of passing the circular slit on the ground plate, and two 1/4 wavelength step electric impedance resonators on second conductive plate are connected with ground plate through the grounded metal via hole respectively with two 1/4 wavelength uniform impedance resonators; Double frequency band aerial is formed at first conductive plate, first substrate and ground plate, and first frequency band of double frequency band aerial is by the size in two C shape slits and the size decision of rectangular patch, and second frequency band is by the size decision of rectangular patch; Dual frequency filter is formed at second conductive plate, second substrate and ground plate, and first frequency band of dual frequency filter is by the decision of step electric impedance resonator, and second frequency band is determined by step electric impedance resonator and uniform impedance resonator jointly; The ground plate of double frequency band aerial and the shared centre of dual frequency filter.Described double frequency band aerial adopts the coaxial feed mode, and power feed hole is in distributing point.In the work; When transmitting; The signal of emission is delivered to a signal port of filter, and this transmits and is coupled to another signal port of filter through step electric impedance resonator and uniform impedance resonator, and warp connection metallic vias is delivered to double frequency band aerial and launched again.When receiving signal; The wireless signal that double frequency band aerial receives is at first delivered to a signal port of dual frequency filter via connecting metallic vias; This signal is exported through another signal port that step electric impedance resonator and uniform impedance resonator are coupled to filter then, realizes the filtering to signal.Antenna-the filter apparatus of above-mentioned collaborative design is only realized stacked antenna-filter apparatus with the two layer medium substrate; The ground plate of double frequency band aerial and the shared centre of dual frequency filter; Reduced the volume of device; Improve the integrated level and the degree of miniaturization of device, improved the bandwidth of device, thereby improved the performance of radio system.
Usually, the size of rectangular radiation patch antenna is about 1/2 guide wavelength, and the selection of rectangular radiation patch size makes it be operated in second frequency band among the present invention.Rectangular radiation patch is opened two C shape slits, has changed the current path on the paster, has encouraged the another one mode of resonance of paster antenna, and the size through Electromagnetic Simulation software AnsoftHFSS optimizes C shape slit makes paster antenna be operated in first frequency band.Therefore, first frequency band of double frequency band aerial is by the size decision of the size in two C shape slits and paster, and second frequency band is by the size decision of radiation patch.Theoretically; Can make antenna become double frequency band aerial as long as on radiation patch, have the slit; The size of rectangular patch is determined by second frequency band; Those skilled in the art can easily determine the gap size under required first frequency band through Electromagnetic Simulation software Ansoft HFSS through the l-G simulation test of limited number of time.The present invention selects C shape slit for use and makes two C shape slits about the initial point left-right symmetric, can be more easily through selecting gap size and patch size to obtain required double frequency-band.
Dual frequency filter is made up of step electric impedance resonator and uniform impedance resonator, and step electric impedance resonator and uniform impedance resonator mutual alignment relation is known to those skilled in the art in dual frequency filter.The present invention selects 1/4 wavelength step electric impedance resonator and 1/4 wavelength uniform impedance resonator, helps reducing the volume of filter, thereby reduces the volume of double frequency-band antenna-filter device, improves the integrated level and the degree of miniaturization of device.Described 1/4 wavelength step electric impedance resonator constitutes (total length that so-called 1/4 wavelength is meant the step electric impedance resonator is 1/4 of first frequency band guide wavelength) by two sections (be wide section with narrow section) microstrip lines, and characteristic impedance, the electrical length of these two sections microstrip lines are respectively Z
1And Z
2, θ
1And θ
2Through regulating the impedance ratio Z of step electric impedance resonator
2/ Z
1Compare θ with length
2/ (θ
1+ θ
2); Make the step electric impedance resonator be operated on two frequency bands of design; Those skilled in the art regulate characteristic impedance, the electrical length of two sections microstrip lines through Electromagnetic Simulation software Ansoft HFSS; L-G simulation test through limited number of time can easily make filter be operated in two required frequency bands, but the insertion loss of second frequency band is bigger.Described 1/4 wavelength uniform impedance resonator is a single section microstrip line, is used for strengthening the coupling of second frequency band, reduces the insertion loss of second frequency band, and its length is 1/4 of second frequency band guide wavelength.In sum, first frequency band of dual frequency filter is by the decision of step electric impedance resonator, and second frequency band determined by step electric impedance resonator and uniform impedance resonator jointly.
In order further to realize the miniaturization of dual frequency filter; Narrow section microstrip line of 1/4 wavelength step electric impedance resonator carries out four times 90 degree bendings to a side; And make second bending segment of narrow section microstrip line of two 1/4 wavelength step electric impedance resonators relative when placing; 1/4 wavelength uniform impedance resonator carries out twice 90 degree bendings; And make second bending segment of two 1/4 wavelength uniform impedance resonators relative when placing, the 3rd bending segment with narrow section microstrip line of two 1/4 wavelength step electric impedance resonators is relative respectively to make first bending segment of two 1/4 wavelength uniform impedance resonators simultaneously.The size of 1/4 wavelength step electric impedance resonator and 1/4 each bending segment of wavelength uniform impedance resonator can influence the bandwidth of the dual frequency filter of collaborative design, and each bending part size can obtain through Electromagnetic Simulation software Ansoft HFSS optimization.
The size in the circular slit of the position that is connected metallic vias (power feed hole) of described first conductive plate and second conductive plate, size and ground plate directly influences the impedance that is connected of antenna and filter; And then influence the bandwidth of antenna-filter apparatus; Make antenna and filter obtain good impedance match through the size of regulating the circular slit of position, size and ground plate that connects metallic vias (power feed hole), improve the bandwidth of antenna-filter apparatus.
Compare with the direct cascade antenna-filter apparatus of the accurate impedance interface of traditional 50 Europe superscripts; Antenna-the filter apparatus of collaborative design of the present invention is only realized stacked antenna-filter apparatus with the two layer medium substrate; The ground plate of double frequency band aerial and the shared centre of dual frequency filter; Reduce the volume of antenna-filter apparatus, improved the integrated level and the degree of miniaturization of device, thereby improved the integrated level of radio system; Size through regulating antenna radiation unit (first conductive plate) and filter signal layer (second conductive plate) realizes required working band; The size in the circular slit of the position that is connected metallic vias, size and ground plate through regulating first conductive plate and second conductive plate, the impedance that is connected of adjustment antenna and filter has improved the bandwidth of antenna-filter apparatus.The present invention is applicable to the double-frequency wireless communication system.
Description of drawings
Fig. 1 is existing antenna in the collaborative design of same plane-filter apparatus structural representation;
Fig. 2 is the double frequency-band antenna-filter device structural representation of collaborative design of the present invention;
Fig. 3 is the plane graph of double frequency-band antenna-filter device first conductive plate of collaborative design of the present invention;
Fig. 4 is the plane graph of double frequency-band antenna-filter device second conductive plate of collaborative design of the present invention;
Fig. 5 is double frequency band aerial S
11Frequency characteristic;
Fig. 6 is the double frequency-band antenna-filter device S of collaborative design of the present invention
11Frequency characteristic.
Among the figure: 1-first conductive plate, 2-first substrate, 3-ground plate, 4-second substrate; 5-C shape slit, 6-power feed hole, 7-1/4 wavelength step electric impedance resonator, 8-1/4 wavelength uniform impedance resonator; The circular slit of 9-, 10-connects metallic vias, 11-grounded metal via hole, 21-antenna radiation unit; 22-filter signal layer, 23-medium substrate, 24-ground plate.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are elaborated, present embodiment has provided detailed execution mode being to implement under the prerequisite with technical scheme of the present invention.
Shown in accompanying drawing 2-4; The double frequency-band antenna-filter device of collaborative design of the present invention; Comprise first conductive plate 1 that stacks gradually from top to bottom, first substrate 2, ground plate 3, second substrate 4 and second conductive plate; First conductive plate 1 (for antenna radiation unit) is for having the rectangular radiation patch of two C shape slits 5 and power feed hole 6 on it; Selecting the paster center is the origin of coordinates; Two C shape slits 5 are about the initial point left-right symmetric; Second conductive plate (for filter signal layer) is made up of two 1/4 wavelength step electric impedance resonator 7 and two 1/4 wavelength uniform impedance resonators 8 that have signal port on it respectively; The power feed hole 6 that has a circular slit 9, the first conductive plates 1 on the ground plate 3 connects through the metallic vias 10 that is connected of passing the circular slit 9 on the ground plate 3 with the signal port of one of them 1/4 wavelength step electric impedance resonator of second conductive plate, and two 1/4 wavelength step electric impedance resonators 7 on second conductive plate are connected with ground plate 3 through grounded metal via hole 11 respectively with two 1/4 wavelength uniform impedance resonators 8; Double frequency band aerial is formed at first conductive plate, first substrate and ground plate; Dual frequency filter is formed at second conductive plate, second substrate and ground plate; The ground plate of double frequency band aerial and the shared centre of dual frequency filter.Described double frequency band aerial adopts the coaxial feed mode, and power feed hole is in distributing point.
In order further to realize the miniaturization of dual frequency filter; Shown in accompanying drawing 4; Narrow section microstrip line of 1/4 wavelength step electric impedance resonator 7 carries out four times 90 degree bendings to a side; And make second bending segment of narrow section microstrip line of two 1/4 wavelength step electric impedance resonators relative when placing; 1/4 wavelength uniform impedance resonator 8 carries out twice 90 degree bendings, and makes second bending segment of two 1/4 wavelength uniform impedance resonators relative when placing, and the 3rd bending segment with narrow section microstrip line of two 1/4 wavelength step electric impedance resonators is relative respectively to make first bending segment of two 1/4 wavelength uniform impedance resonators simultaneously.During practical implementation, it is the Copper Foil of 35um that described first conductive plate 1, ground plate 3 and second conductive plate all adopt thickness; First substrate 2 and second substrate 4 adopt identical materials, and have identical thickness, specifically are that first substrate 2 and second substrate 4 all adopt epoxy glass fiber plate (also can adopt other materials), and dielectric constant is 4.4, and thickness is 0.8mm.
The size that is connected metallic vias (power feed hole) and the circular slit of ground plate of described first conductive plate and second conductive plate directly influences the impedance that is connected of antenna and filter, and then influences the bandwidth of antenna-filter apparatus.When the operating frequency of the double frequency-band antenna-filter device of collaborative design is 2.41GHz and 5.36GHz; Size as the rectangular radiation patch of first conductive plate 1 is long * wide be 26 * 24mm (being positioned at the centre of first substrate); The diameter of the power feed hole 6 on it (connection metallic vias) is 0.2mm; Be positioned on the vertical symmetrical line in two C shape slits 5 and apart from patch edges 6.6mm place, the diameter in the circular slit 9 of ground plate 3 is 1.3mm.Confirm exactly that through above-mentioned the size in the circular slit of position, size and ground plate of power feed hole (connection metallic vias) makes antenna and filter obtain good impedance match, having improved this operating frequency is the bandwidth of antenna-filter apparatus of 2.41GHz and 5.36GHz.
Accompanying drawing 5 shows the double frequency band aerial S that operating frequency is antenna-filter apparatus of 2.41GHz and 5.36GHz
11Frequency characteristic, wherein abscissa is represented frequency variable, unit is GHz, ordinate is represented the amplitude variable, unit is dB.At S
11Under the situation of＜-10dB, the relative bandwidth of antenna first working band is that the relative bandwidth of 4.2%, the second working band is 1.4%.Obviously, second working band can not satisfy the bandwidth requirement of radio communication.
Accompanying drawing 6 shows the double frequency-band antenna-filter device S that operating frequency is the collaborative design of 2.41GHz and 5.36GHz
11Frequency characteristic.At S
11Be not higher than-situation of 10dB under, the relative bandwidth of first working band (2.41GHz) is that the relative bandwidth of 3.3%, the second working band (5.36GHz) is 5.4%.
Compare with double frequency band aerial, the bandwidth of its first working band of the double frequency-band antenna-filter device of collaborative design slightly reduces, and the bandwidth of second working band then increases greatly, makes two working bands all can satisfy the bandwidth requirement of radio communication.
The described double frequency-band antenna-filter device of present embodiment; When transmitting; The signal of emission is delivered to the filter input end mouth; This transmits and is coupled to the output port of filter through step electric impedance resonator and uniform impedance resonator, and warp connection metallic vias is delivered to double frequency band aerial and launched again.When receiving signal; The wireless signal that double frequency band aerial receives is at first delivered to the input port of dual frequency filter via connecting metallic vias; This signal is coupled to the output port of filter through step electric impedance resonator and uniform impedance resonator 42 then, realizes the filtering to signal.
Claims (5)
1. the double frequency-band antenna-filter device of a collaborative design; It is characterized by: comprise first conductive plate (1), first substrate (2), ground plate (3), second substrate (4) and second conductive plate that stack gradually from top to bottom; First conductive plate (1) is for having the rectangular radiation patch of two C shape slits (5) and power feed hole (6) on it; Selecting the paster center is the origin of coordinates; Two C shape slits (5) are about the initial point left-right symmetric; Second conductive plate is made up of two 1/4 wavelength step electric impedance resonator (7) and two 1/4 wavelength uniform impedance resonators (8) that have signal port on it respectively; Have a circular slit (9) on the ground plate (3); The power feed hole (6) of first conductive plate (1) connects through the metallic vias (10) that is connected of passing the circular slit (9) on the ground plate (3) with the signal port of one of them 1/4 wavelength step electric impedance resonator of second conductive plate, and two the 1/4 wavelength step electric impedance resonators (7) on second conductive plate are connected with ground plate (3) through grounded metal via hole (11) respectively with two 1/4 wavelength uniform impedance resonators (8); Double frequency band aerial is formed at first conductive plate, first substrate and ground plate; Dual frequency filter is formed at second conductive plate, second substrate and ground plate; The ground plate of double frequency band aerial and the shared centre of dual frequency filter.
2. the double frequency-band antenna-filter device of collaborative design as claimed in claim 1; It is characterized by: narrow section microstrip line of 1/4 wavelength step electric impedance resonator (7) carries out four times 90 degree bendings to a side; And make second bending segment of narrow section microstrip line of two 1/4 wavelength step electric impedance resonators relative when placing; 1/4 wavelength uniform impedance resonator (8) carries out twice 90 degree bendings; And make second bending segment of two 1/4 wavelength uniform impedance resonators relative when placing, the 3rd bending segment with narrow section microstrip line of two 1/4 wavelength step electric impedance resonators is relative respectively to make first bending segment of two 1/4 wavelength uniform impedance resonators simultaneously.
3. according to claim 1 or claim 2 the double frequency-band antenna-filter device of collaborative design; It is characterized by: the operating frequency of the double frequency band aerial-filter apparatus of collaborative design is 2.41GHz and 5.36GHz; Size as the rectangular radiation patch of first conductive plate (1) is long * wide be 26 * 24mm; The diameter of the power feed hole on it (6) is 0.2mm, is positioned on the vertical symmetrical line in two C shape slits (5) and apart from patch edges 6.6mm place, the diameter in the circular slit (9) of ground plate (3) is 1.3mm.
4. according to claim 1 or claim 2 double frequency band aerial one filter apparatus of collaborative design, it is characterized by: first substrate (2) adopts identical materials with second substrate (4), and has identical thickness.
5. the double frequency-band antenna-filter device of collaborative design as claimed in claim 3 is characterized by: first substrate (2) adopts identical materials with second substrate (4), and has identical thickness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910074123A CN101533939B (en) | 2009-04-09 | 2009-04-09 | Collaboratively designed double frequency-band antenna-filter device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910074123A CN101533939B (en) | 2009-04-09 | 2009-04-09 | Collaboratively designed double frequency-band antenna-filter device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101533939A CN101533939A (en) | 2009-09-16 |
| CN101533939B true CN101533939B (en) | 2012-10-17 |
Family
ID=41104401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910074123A Active CN101533939B (en) | 2009-04-09 | 2009-04-09 | Collaboratively designed double frequency-band antenna-filter device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101533939B (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610879B (en) * | 2012-02-29 | 2014-06-11 | 南京航空航天大学 | Double-frequency band-pass filter |
| TWI495196B (en) * | 2012-11-20 | 2015-08-01 | Quanta Comp Inc | Antenna system |
| WO2015139288A1 (en) * | 2014-03-21 | 2015-09-24 | 华为技术有限公司 | Antenna apparatus |
| EP2963733A1 (en) * | 2014-07-03 | 2016-01-06 | Agfa Healthcare | Dual band SRR loaded cavity antenna |
| CN104638360B (en) * | 2015-02-16 | 2018-03-16 | 中天宽带技术有限公司 | Filter antenna |
| CN104681905A (en) * | 2015-03-06 | 2015-06-03 | 西安电子科技大学 | Multi-frequency-band radio-frequency filter easy to regulate and control |
| CN106340702A (en) * | 2016-09-28 | 2017-01-18 | 华南理工大学 | Novel high-gain WLAN dual-frequency filtering antenna |
| CN106299671B (en) * | 2016-10-17 | 2019-05-17 | 山西大学 | Double frequency-band filter antenna |
| CN106450737B (en) * | 2016-11-25 | 2023-07-18 | 华南理工大学 | Omnidirectional low-profile filtering patch antenna |
| CN106992797A (en) * | 2017-03-30 | 2017-07-28 | 联想(北京)有限公司 | Electronic equipment and wave filter |
| CN107069203A (en) * | 2017-04-15 | 2017-08-18 | 深圳市景程信息科技有限公司 | Miniaturization high-gain filtering is antenna integrated |
| CN107834165A (en) * | 2017-05-18 | 2018-03-23 | 北京利方达真空技术有限责任公司 | A kind of two-band medium resonator antenna applied to more mobile communication modes |
| JP6849086B2 (en) * | 2017-09-14 | 2021-03-24 | 株式会社村田製作所 | Antenna module and communication device |
| CN108649334A (en) * | 2018-04-28 | 2018-10-12 | 南京邮电大学 | dual-band dual-polarized wearable relay antenna |
| CN109244656B (en) * | 2018-10-31 | 2024-07-12 | 至晟(临海)微电子技术有限公司 | 5G millimeter wave filtering broadband antenna |
| CN109301472B (en) * | 2018-10-31 | 2024-07-12 | 至晟(临海)微电子技术有限公司 | Dual-band millimeter wave antenna |
| CN109449573B (en) | 2018-11-14 | 2020-10-02 | 深圳Tcl新技术有限公司 | Microstrip antenna and television |
| CN109411885B (en) * | 2018-11-28 | 2024-07-12 | 至晟(临海)微电子技术有限公司 | Caliber-controllable ultra-surface filtering antenna |
| CN109599645B (en) * | 2018-12-10 | 2023-11-03 | 华南理工大学 | On-chip second-order band-pass filter and radio frequency wireless communication device |
| CN109546329B (en) * | 2018-12-26 | 2024-02-02 | 东莞市仁丰电子科技有限公司 | Slot antenna |
| CN109841950A (en) * | 2019-03-29 | 2019-06-04 | 钟祥博谦信息科技有限公司 | Wideband filtered antenna |
| CN110263901B (en) * | 2019-06-25 | 2024-04-02 | 深圳市易太思智能科技有限公司 | Ultra-small RFID electronic tag antenna and electronic tag |
| WO2021060167A1 (en) * | 2019-09-27 | 2021-04-01 | パナソニックＩｐマネジメント株式会社 | Antenna device |
| CN112054288B (en) * | 2020-09-04 | 2022-11-08 | 青岛海信移动通信技术股份有限公司 | Electronic device |
| CN116982216A (en) * | 2021-02-20 | 2023-10-31 | 瑞典爱立信有限公司 | Antenna filter unit and base station having the same |
| CN113964495B (en) * | 2021-10-22 | 2023-12-05 | 云南大学 | Integrated substrate gap waveguide filter antenna |
| CN114069241A (en) * | 2021-11-23 | 2022-02-18 | 上海矽杰微电子有限公司 | Millimeter wave circularly polarized microstrip antenna with wide axial ratio and wide axial ratio implementation method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783631A (en) * | 1999-05-28 | 2006-06-07 | X2Y衰减器有限公司 | Multi-functional energy conditioner |
-
2009
- 2009-04-09 CN CN200910074123A patent/CN101533939B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783631A (en) * | 1999-05-28 | 2006-06-07 | X2Y衰减器有限公司 | Multi-functional energy conditioner |
Non-Patent Citations (1)
| Title |
|---|
| 药春晖等.基于共面波导的新型超宽带带通滤波器.《山西大学学报（自然科学版）》.2007,第49-52页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101533939A (en) | 2009-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101533939B (en) | Collaboratively designed double frequency-band antenna-filter device | |
| JP4868128B2 (en) | ANTENNA DEVICE AND RADIO COMMUNICATION DEVICE USING THE SAME | |
| US7015862B2 (en) | Antenna, method for manufacturing the antenna, and communication apparatus including the antenna | |
| EP1307942B1 (en) | Antenna device | |
| US8773317B2 (en) | Antenna apparatus including multiple antenna portions on one antenna element operable at multiple frequencies | |
| CN102394361B (en) | A kind of ultra-wideband antenna and terminal | |
| CN109659686B (en) | High-isolation MIMO antenna | |
| EP3361570B1 (en) | Split ring resonator antenna | |
| CN109672019B (en) | Terminal MIMO antenna device and method for realizing antenna signal transmission | |
| US20090002248A1 (en) | Half-and Quarter-Wavelength Printed Slot Ultra-Wideband (Uwb) Antennas for Mobile Terminals | |
| CN103283087A (en) | Antenna apparatus and methods | |
| US12095163B2 (en) | Antenna module and communication device equipped with the same | |
| US20060044186A1 (en) | Dual band antenna system | |
| CN110829023B (en) | Antenna module and terminal | |
| CN110797642B (en) | Antenna module and terminal | |
| US8593368B2 (en) | Multi-band antenna and electronic apparatus having the same | |
| CN112952362B (en) | Integrated antenna and electronic device | |
| CN103259070A (en) | Transmission line capable of lowering loss | |
| CN2924811Y (en) | Printed circuit board antenna | |
| EP3652805B1 (en) | Apparatus for power combining | |
| CN109755748B (en) | Electronic device | |
| JP5694953B2 (en) | ANTENNA DEVICE AND WIRELESS COMMUNICATION DEVICE | |
| JP5714507B2 (en) | MIMO antenna apparatus and radio communication apparatus | |
| CN101202377B (en) | Double frequency antenna | |
| EP1936738A1 (en) | A microstrip patch antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANXI UNIVERISTY JINCHENG POWER SUPPLY COMPANY, S Effective date: 20131212 Owner name: STATE ELECTRIC NET CROP. Free format text: FORMER OWNER: SHANXI UNIVERISTY Effective date: 20131212 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 030006 TAIYUAN, SHAANXI PROVINCE TO: 100031 XICHENG, BEIJING |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131212 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: Shanxi Univeristy Patentee after: Jincheng Power Supply Company, State Grid Shanxi Electric Power Company Address before: 030006 Taiyuan City, Shanxi province city road, No. 92 Patentee before: Shanxi Univeristy |