CN206441850U - Folding double frequency section antenna based on U-shaped gap structure - Google Patents
Folding double frequency section antenna based on U-shaped gap structure Download PDFInfo
- Publication number
- CN206441850U CN206441850U CN201720092672.9U CN201720092672U CN206441850U CN 206441850 U CN206441850 U CN 206441850U CN 201720092672 U CN201720092672 U CN 201720092672U CN 206441850 U CN206441850 U CN 206441850U
- Authority
- CN
- China
- Prior art keywords
- metal piece
- shaped gap
- metal
- double frequency
- antenna
- 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.)
- Expired - Fee Related
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/10—Resonant slot antennas
- H01Q13/16—Folded slot antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
Landscapes
- Waveguide Aerials (AREA)
Abstract
The utility model discloses a kind of folding double frequency section antenna based on U-shaped gap structure, including folded metal piece and sub-miniature A connector.The afterbody of folded metal piece once forms afterbody sheet metal from folded inside, and the front portion of folded metal piece sequentially forms bottom metal piece, outside sheet metal, top metal piece, inner metal piece and intermediate metal film four times from folded inside.The ground terminal of sub-miniature A connector is weldingly connected with bottom metal piece, and hole is opened up on bottom metal piece；The feeder line of sub-miniature A connector passes through the hole of the bottom metal piece and welds to form feed connection point with intermediate metal film.A U-shaped gap resonator is hollowed out around feed connection point and on the intermediate metal film, effective electrical length of the U-shaped gap resonator in 2.4GHz frequency ranges is 1/2nd wavelength.The utility model can realize the two-band function of 470 790MHz TVWS working frequency range and 2.4GHz WiFi working frequency range, realize the miniaturization of antenna under conditions of it need not increase existing collapsible sheet metal antenna size.
Description
Technical field
The utility model is related to frequency microwave communication technical field, more particularly to a kind of folding based on U-shaped gap structure
Formula dual-band antenna.
Background technology
TVWS TVs white area (Television White Space；TVWS) frequency range and 2.4GHz WiFi frequency ranges can be by
Applied to area researches such as cognitive radios, because TVWS frequency ranges are relative to the much lower (470- of 2.4GHz WiFi band frequencies
790MHz), so few antennas can cover the two frequency ranges simultaneously at present.The antenna of height frequency can be covered simultaneously in reply
During design problem, often by the method using the multiple antennas of combination, but this design method is unfavorable for reducing antenna chi
It is very little.
Utility model content
Main purpose of the present utility model provides a kind of folding double frequency section antenna based on U-shaped gap structure, is being not required to
Under conditions of increasing existing collapsible sheet metal antenna size, can realize 470-790MHz TVWS working frequency range and
The two-band function of 2.4GHz WiFi working frequency range, and realize the miniaturization of antenna.
To achieve the above object, the utility model provides a kind of folding double frequency section antenna based on U-shaped gap structure,
Including folded metal piece and sub-miniature A connector, the afterbody of the folded metal piece once forms afterbody sheet metal from folded inside, described
The front portion of folded metal piece sequentially forms bottom metal piece, outside sheet metal, top metal piece, inner side gold four times from folded inside
Belong to piece and intermediate metal film, the top metal piece, intermediate metal film and bottom metal piece are disposed in parallel relation to one another, the outside gold
Category piece, inner metal piece and afterbody sheet metal are disposed in parallel relation to one another, wherein：
The ground terminal of the sub-miniature A connector is weldingly connected with the bottom metal piece, and hole is opened up on the bottom metal piece；
The feeder line of the sub-miniature A connector passes through the hole of the bottom metal piece and welds to form feedback with the intermediate metal film
Be electrically connected contact；
Position of the feed connection point on intermediate metal film is in position of the described hole on bottom metal piece
Surface；
A U-shaped gap resonator is hollowed out around the feed connection point and on the intermediate metal film, it is described U-shaped
Effective electrical length of the gap resonator in 2.4GHz frequency ranges is 1/2nd wavelength.
It is preferred that, the gap internal diameter W of the U-shaped gap resonator1For 2.2mm, gap length L3For 34mm, gap width
L4For 15mm.
It is preferred that, the distance between the U-shaped opening end of the U-shaped gap resonator and the broadside of intermediate metal film d1For
2mm, the distance between the U-shaped blind end of the U-shaped gap resonator and feed connection point d2For 5.35mm.
It is preferred that, the folded metal piece is metal copper sheet, width W0For 60mm, thickness is 0.2mm.
It is preferred that, the length H of the afterbody sheet metal0For 61mm.
It is preferred that, the bottom metal leaf length L0For 150mm.
It is preferred that, the outside sheet metal, top metal piece, the length of inner metal piece and intermediate metal film are followed successively by H0
=61mm, L1=65mm, H1=45mm, L2=49mm.
It is preferred that, the lateral separation d between the broadside of described hole and bottom metal piece0=45.45, the hole and bottom
Fore-and-aft distance between the long side of sheet metal is W0/ 2=30mm.
Compared to prior art, the folding double frequency section antenna described in the utility model based on U-shaped gap structure is realized
Low frequency (470-790MHz) wideband operation frequency range, can cover 470-790MHz TVWS working frequency range.In addition, this practicality is new
Type hollows out a gap resonator, not by optimizing the feed structure of antenna on the intermediate metal film as feeding plane
A high-frequency matching is obtained under conditions of increase antenna size, the WiFi working frequency range of 2.4GHz frequency ranges is realized.This practicality
The new folding double frequency section broad-band antenna is not being needed compared to by combining the dual-band antenna that multiple antenna modes are designed
Increase under conditions of antenna size, the TVWS working frequency range of 470-790MHz frequency ranges and the WiFi works of 2.4GHz frequency ranges can be realized
Make frequency range, effectively reduce antenna size, realize the miniaturization of antenna.
Brief description of the drawings
Fig. 1 is the stereochemical structure of folding double frequency section antenna preferred embodiment of the utility model based on U-shaped gap structure
Schematic diagram；
Fig. 2 is the side view of folding double frequency section antenna of the utility model based on U-shaped gap structure；
Fig. 3 is the top view of the intermediate metal film of folding double frequency section antenna of the utility model based on U-shaped gap structure；
Fig. 4 is the reflectance factor S of folding double frequency section antenna of the utility model based on U-shaped gap structure11Emulation knot
Fruit schematic diagram；
Fig. 5 is the length pair of the intermediate metal film of folding double frequency section antenna of the utility model based on U-shaped gap structure
The reflectance factor S of antenna11Influence schematic diagram；
Fig. 6 is that the gap of the gap resonator of folding double frequency section antenna of the utility model based on U-shaped gap structure is long
Spend the reflectance factor S to antenna11Influence schematic diagram；
Fig. 7 a, 7b and 7c are respectively that folding double frequency section antenna of the utility model based on U-shaped gap structure exists
The emulation directional diagram of tri- frequencies of 0.51GHz, 0.73GHz and 2.49GHz.
The realization of the utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, will be in embodiment part one
And be described further referring to the drawings.
Embodiment
Further to illustrate that the utility model is to reach technological means and effect that above-mentioned purpose is taken, below in conjunction with
Accompanying drawing and preferred embodiment, embodiment of the present utility model, structure, feature and its effect are described in detail.Should
Work as understanding, specific embodiment described herein only to explain the utility model, is not used to limit the utility model.
Shown in reference picture 1, Fig. 2 and Fig. 3, Fig. 1 is folding double frequency section antenna of the utility model based on U-shaped gap structure
The dimensional structure diagram of preferred embodiment；Fig. 2 is folding double frequency section antenna of the utility model based on U-shaped gap structure
Side view；Fig. 3 is the top view of the intermediate metal film of folding double frequency section antenna of the utility model based on U-shaped gap structure.
In the present embodiment, the folding double frequency section antenna based on U-shaped gap structure includes folded metal piece 1 and sub-miniature A connector 2,
The afterbody of the folded metal piece 1 once forms afterbody sheet metal 11 from folded inside, folded metal piece 1 it is anterior from folded inside
Sequentially form bottom metal piece 12, outside sheet metal 13, top metal piece 14, inner metal piece 15 and intermediate metal film four times
16.The folding mode each time of the folded sheet metal 1 can be using any angle bending, such as 30 °, 45 °, 60 ° and 90 °
Angle, in order to simplify the vertical folding mode between description, two sheet metals of the present embodiment using 90 ° of angles.The afterbody gold
Category piece 11 is mutually perpendicular to fold and is connected with bottom metal piece 12, and bottom metal piece 12 is mutually perpendicular to the company of folding with outside sheet metal 13
Connect, outside sheet metal 13 and top metal piece 14 be mutually perpendicular to fold be connected, top metal piece 14 and inner metal piece 15 it is mutual
Vertical folding is connected, and inner metal piece 15 is mutually perpendicular to fold and is connected with intermediate metal film 16.The top metal piece 14, centre
Sheet metal 16 is disposed in parallel relation to one another with bottom metal piece 12, the outside sheet metal 13, inner metal piece 15 and afterbody sheet metal
11 are disposed in parallel relation to one another.
The afterbody of the folded metal piece 1 once forms afterbody sheet metal 11, length H toward folded inside0For 61mm；It is described
Bottom metal piece 12 is the bottom of the folding double frequency section antenna based on U-shaped gap structure, length L0For 150mm；It is described
Outside sheet metal 13, top metal piece 14, each several part length of inner metal piece 15 and intermediate metal film 16 are followed successively by H0=
61mm, L1=65mm, H1=45mm, L2=49mm；The width of each sheet metal is the width W of folded metal piece 10=
60mm, the folded metal piece 1 is metal copper sheet, and thickness is 0.2mm.
With reference to shown in Fig. 2, the sub-miniature A connector 2 is a kind of common antennal interface, and SMA is Sub-Miniature-A letter
Claim.In the present embodiment, the sub-miniature A connector 2 includes ground terminal 21 and feeder line 22, ground terminal 21 and the bottom gold of the sub-miniature A connector 2
The bottom of category piece 12 is weldingly connected.Hole 120 is opened up on bottom metal piece 12, size and the sub-miniature A connector 2 of the hole 120
The thickness of feeder line 22 matches.The described hole 120 and broadside W of bottom metal piece 120Between lateral separation d0=45.45, the hole
The 120 and long side L of bottom metal piece 120Between fore-and-aft distance be W0/ 2=30mm.The feeder line 22 of sub-miniature A connector 2 is golden through bottom
Belong to the hole 120 of piece 12 and be welded to connect with intermediate metal film 16 so that the feeder line 22 and intermediate metal film of the sub-miniature A connector 2
16 place of being welded to connect forms feed connection point 20, so as to realize feed.In the present embodiment, due to the bottom metal piece 12
It is parallel to each other with intermediate metal film 16, therefore position of the feed connection point 20 on intermediate metal film 16 is in described hole
120 the position of bottom metal piece 12 surface.
With reference to shown in Fig. 3, around the feed connection point 20 and open up one on the intermediate metal film 16 and hollow out
U-shaped gap resonator 10.Effective electrical length of the U-shaped gap resonator 10 at 2.4GHz frequency ranges (2.4-2.483GHz)
For 1/2nd wavelength, the WiFi working frequency range of 2.4GHz frequency ranges can be produced.In the present embodiment, the U-shaped gap resonance
Device 10 is the white portion in a kind of resonator with U-shaped gap structure, such as Fig. 3.In the gap of the U-shaped gap resonator 10
Footpath W1For 2.2mm, gap length L3For 34mm, gap width L4For 15mm.The U-shaped opening end of the U-shaped gap resonator 10 is with
Between sheet metal 16 broadside W0The distance between d1For 2mm, U-shaped blind end and the feed connection point 20 of the U-shaped gap resonator 10
The distance between d2For 5.35mm.Intermediate metal film 16 is as feeding plane, and the utility model is due on intermediate metal film 16
U-shaped gap resonator 10 is offered, a high-frequency matching is obtained under conditions of antenna size is not increased, so that this
Utility model folding double frequency section antenna can cover 2.4GHz WiFi working frequency range.
Folding double frequency section antenna described in the utility model based on U-shaped gap structure realizes low frequency broadband (470-
Working frequency range 790MHz), therefore, it is possible to cover 470-790MHz TVWS working frequency range.In addition, the feedback by optimizing antenna
Electric structure, a U-shaped gap resonator 10 is hollowed out on the intermediate metal film 16 as feeding plane, is not increasing antenna size
Under conditions of obtain the matching of high-frequency, realize 2.4GHz WiFi working frequency range.It is described in the utility model to be based on U-shaped seam
The folding double frequency section antenna of gap structure can be effectively reduced compared to by combining the dual-band antenna that multiple antenna modes are designed
Antenna size, under conditions of it need not increase antenna size, result in 470-790MHz TVWS working frequency range and
The two-band function of 2.4GHz WiFi working frequency range, and realize the miniaturization of antenna.
With reference to shown in Fig. 4, Fig. 4 is the reflection system of folding double frequency section antenna of the utility model based on U-shaped gap structure
Number S11Simulation result schematic diagram.From fig. 4, it can be seen that folding double frequency Duan Tian of the utility model based on U-shaped gap structure
Line has three resonance frequency modes：fm1、fm2And fm3.Wherein, fm1And fm2It is relevant with the overall dimension of antenna, fm3It is by U-shaped seam
Gap resonator 10 is produced.The working frequency covering TVWS frequency ranges (470-790MHz) and 2.4GHz frequency ranges of antenna described in utility model
WiFi(2.4-2.483GHz).In the present embodiment, fm1For the lowest operating frequency of antenna, frequency fm1Can be by changing
The design height H of antenna0To adjust；fm2Can be by changing intermediate metal film 16 (last folded metal piece of antenna)
Design length L2To adjust；fm3Can be by changing the design gap length L of gap resonator 103To adjust.
With reference to shown in Fig. 5, Fig. 5 is the middle gold of folding double frequency section antenna of the utility model based on U-shaped gap structure
Belong to the length L of piece 162To the reflectance factor S of antenna11Influence schematic diagram.From fig. 5, it can be seen that setting when intermediate metal film 16
Count length L2During growth, fm2Frequency reduction, and fm1、fm3Keep constant.
With reference to shown in Fig. 6, Fig. 6 is the U-shaped gap of folding double frequency section antenna of the utility model based on U-shaped gap structure
The gap length L of resonator 103To the reflectance factor S of antenna11Influence schematic diagram.From fig. 6, it can be seen that when design gap is long
Spend L3During shortening, fm3 frequency increase, and fm1、fm2Keep constant.
With reference to shown in Fig. 7 a, 7b and 7c, Fig. 7 a, 7b and 7c are respectively folding of the utility model based on U-shaped gap structure
Emulation directional diagram of the formula dual-band antenna in tri- frequencies of 0.51GHz, 0.73GHz and 2.49GHz.In the present embodiment, this reality
It is respectively in the simulated gain value of three frequencies with the new folding double frequency section antenna based on U-shaped gap structure
2.3dBi, 2.9dBi and 4.8dBi.From Fig. 7 a and 7b as can be seen that in frequency range 0.51GHz and 0.73GHz, antenna court
Top is radiated, i.e., the folding double frequency section antenna described in the utility model based on U-shaped gap structure is in the first working frequency range (470-
790MHz TVWS working frequency range) in radiate upward；From Fig. 7 c as can be seen that in 2.49GHz, antenna is towards 0-90 °
Direction is radiated, i.e., the folding double frequency section antenna described in the utility model based on U-shaped gap structure is in the second working frequency range
Radiated in (2.4GHz WiFi working frequency range) towards between the front end of antenna and the folded metal piece part of afterbody, and with phase
To higher gain characteristic, the characteristic contributes to the directional transmissions of electromagnetic signal, therefore suitable for indoor private's WiFi system.
Folding double frequency section antenna described in the utility model based on U-shaped gap structure not only processes simple with low cost,
And three fundamental resonance patterns can be produced, therefore be widely used in broadband and multi-frequency band radio-frequency microwave communication.Due to U
Type gap resonator is to slot to obtain on feeding plane, therefore need not increase extra resonance body, new with this practicality is reduced
The function of folding double frequency section antenna size based on U-shaped gap structure described in type.
Preferred embodiment of the present utility model is these are only, the scope of the claims of the present utility model is not thereby limited, it is every
Equivalent structure or the equivalent function conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (8)
1. a kind of folding double frequency section antenna based on U-shaped gap structure, including folded metal piece and sub-miniature A connector, its feature exist
Once form afterbody sheet metal from folded inside in the afterbody of, the folded metal piece, the folded metal piece it is anterior from interior
Side folds four times and sequentially forms bottom metal piece, outside sheet metal, top metal piece, inner metal piece and intermediate metal film, institute
State top metal piece, intermediate metal film and bottom metal piece to be disposed in parallel relation to one another, the outside sheet metal, inner metal piece and tail
Portion's sheet metal is disposed in parallel relation to one another, wherein：
The ground terminal of the sub-miniature A connector is weldingly connected with the bottom metal piece, and hole is opened up on the bottom metal piece；
The feeder line of the sub-miniature A connector passes through the hole of the bottom metal piece and welds to form feed company with the intermediate metal film
Contact；
Position of the feed connection point on intermediate metal film be in position of the described hole on bottom metal piece just on
Side；
A U-shaped gap resonator, the U-shaped gap are hollowed out around the feed connection point and on the intermediate metal film
Effective electrical length of the resonator in 2.4GHz frequency ranges is 1/2nd wavelength.
2. folding double frequency section antenna as claimed in claim 1 based on U-shaped gap structure, it is characterised in that the U-shaped seam
The gap internal diameter W of gap resonator1For 2.2mm, gap length L3For 34mm, gap width L4For 15mm.
3. folding double frequency section antenna as claimed in claim 2 based on U-shaped gap structure, it is characterised in that the U-shaped seam
The distance between the U-shaped opening end of gap resonator and the broadside of intermediate metal film d1For 2mm, the U-shaped envelope of the U-shaped gap resonator
The distance between closed end and feed connection point d2For 5.35mm.
4. the section antenna of the folding double frequency based on U-shaped gap structure as described in any one of claims 1 to 3, it is characterised in that
The folded metal piece is metal copper sheet, width W0For 60mm, thickness is 0.2mm.
5. folding double frequency section antenna as claimed in claim 4 based on U-shaped gap structure, it is characterised in that the afterbody
The length H of sheet metal0For 61mm.
6. folding double frequency section antenna as claimed in claim 4 based on U-shaped gap structure, it is characterised in that the bottom
Metal leaf length L0For 150mm.
7. folding double frequency section antenna as claimed in claim 4 based on U-shaped gap structure, it is characterised in that the outside
Sheet metal, top metal piece, the length of inner metal piece and intermediate metal film are followed successively by H0=61mm, L1=65mm, H1=
45mm, L2=49mm.
8. folding double frequency section antenna as claimed in claim 4 based on U-shaped gap structure, it is characterised in that described hole
Lateral separation d between the broadside of bottom metal piece0=45.45, the longitudinal direction between the hole and the long side of bottom metal piece
Distance is W0/ 2=30mm.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720092672.9U CN206441850U (en) | 2017-01-22 | 2017-01-22 | Folding double frequency section antenna based on U-shaped gap structure |
| PCT/CN2017/100175 WO2018133426A1 (en) | 2017-01-22 | 2017-09-01 | Foldable dual-band antenna based on u-shaped slit structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720092672.9U CN206441850U (en) | 2017-01-22 | 2017-01-22 | Folding double frequency section antenna based on U-shaped gap structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206441850U true CN206441850U (en) | 2017-08-25 |
Family
ID=59636286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720092672.9U Expired - Fee Related CN206441850U (en) | 2017-01-22 | 2017-01-22 | Folding double frequency section antenna based on U-shaped gap structure |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN206441850U (en) |
| WO (1) | WO2018133426A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133426A1 (en) * | 2017-01-22 | 2018-07-26 | 深圳市景程信息科技有限公司 | Foldable dual-band antenna based on u-shaped slit structure |
| WO2018133425A1 (en) * | 2017-01-22 | 2018-07-26 | 深圳市景程信息科技有限公司 | Folded dual-band antenna |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023208576A1 (en) | 2022-04-29 | 2023-11-02 | Huber+Suhner Ag | Antenna arrangement for mimo antenna applications |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006042562A1 (en) * | 2004-10-23 | 2006-04-27 | Electronics Research Institute | Compact single feed quad band antenna for wireless communication systems |
| US20090058736A1 (en) * | 2007-08-31 | 2009-03-05 | Meng-Chien Chiang | Antenna structure and manufacture method thereof |
| CN101355194A (en) * | 2008-09-01 | 2009-01-28 | 北京邮电大学 | Dual range microstrip antenna |
| CN101345348A (en) * | 2008-09-03 | 2009-01-14 | 北京邮电大学 | Dual-waveband plane inverse-F antenna with U shaped groove and folding line groove |
| CN106910989A (en) * | 2017-01-22 | 2017-06-30 | 深圳市景程信息科技有限公司 | Folding double frequency section antenna |
| CN206441850U (en) * | 2017-01-22 | 2017-08-25 | 深圳市景程信息科技有限公司 | Folding double frequency section antenna based on U-shaped gap structure |
-
2017
- 2017-01-22 CN CN201720092672.9U patent/CN206441850U/en not_active Expired - Fee Related
- 2017-09-01 WO PCT/CN2017/100175 patent/WO2018133426A1/en active Application Filing
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018133426A1 (en) * | 2017-01-22 | 2018-07-26 | 深圳市景程信息科技有限公司 | Foldable dual-band antenna based on u-shaped slit structure |
| WO2018133425A1 (en) * | 2017-01-22 | 2018-07-26 | 深圳市景程信息科技有限公司 | Folded dual-band antenna |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018133426A1 (en) | 2018-07-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7183980B2 (en) | Inverted-F antenna | |
| US9368869B2 (en) | Antenna structures and methods | |
| JP5777885B2 (en) | Multi-band built-in antenna | |
| US7113133B2 (en) | Dual-band inverted-F antenna with a branch line shorting strip | |
| KR101171421B1 (en) | Wide Band Antenna Using Coupling Matching | |
| KR101103208B1 (en) | Broad Band Antenna of Which the Radiator End Point is Shorted Using Coupling Matching | |
| KR100597581B1 (en) | Multi-band internal antenna of symmetry structure having stub | |
| CN104638367B (en) | dual-band microstrip antenna | |
| TWI543444B (en) | Dual-band planar inverted-f antenna | |
| CN206441850U (en) | Folding double frequency section antenna based on U-shaped gap structure | |
| CN107394351A (en) | A kind of full metal jacket mobile intelligent terminal antenna | |
| WO2013007165A1 (en) | Mimo antenna structure of multi-frequency band mobile phone | |
| KR20060053336A (en) | Ultra wide band internal antenna | |
| CN106469849A (en) | A kind of multi-frequency monopole sub-antenna dividing shape to radiate Bending minor matters with KOCH | |
| CN107069204A (en) | A kind of oval gap ultra wide planar slot antenna with hierarchic structure | |
| CN103199342B (en) | Plane printed antenna for mobile terminal considering clearance zone area and multi-frequency-band covering | |
| KR100756312B1 (en) | Resonance frequency and input impedance control the multiplex frequency band internal antenna which it is possible | |
| KR100616545B1 (en) | Multi-band laminated chip antenna using double coupling feeding | |
| CN105305054B (en) | The bielliptic(al) combination monopole antenna of gradual change type coplanar wave guide feedback | |
| CN107994321A (en) | A kind of double frequency dipole antenna with split ring resonator | |
| CN103985957B (en) | A kind of broadband multi-band built-in mobile phone antenna | |
| US20150333396A1 (en) | Multi-band antenna | |
| US8711050B2 (en) | Multi-band dipole antenna | |
| CN106910989A (en) | Folding double frequency section antenna | |
| CN205248438U (en) | Gradual change formula coplane waveguide feed's bielliptic(al) combination monopole antenna |
Legal Events
| 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: 20170825 Termination date: 20210122 |