CN102142603A - Dipole antenna - Google Patents
Dipole antenna Download PDFInfo
- Publication number
- CN102142603A CN102142603A CN2010101106787A CN201010110678A CN102142603A CN 102142603 A CN102142603 A CN 102142603A CN 2010101106787 A CN2010101106787 A CN 2010101106787A CN 201010110678 A CN201010110678 A CN 201010110678A CN 102142603 A CN102142603 A CN 102142603A
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- earth element
- radiation
- antenna
- linear
- width
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/26—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
- H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
- H01Q9/285—Planar dipole
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Details Of Aerials (AREA)
Abstract
The invention relates to a dipole antenna of a printed circuit board, which is provided with two radiating arms extending from a signal wire and a grounding wire of a finite grounding microstrip. The length of each radiating arm is equal to or less than the 1/4 wavelength of the monitored frequency. The length of the finite grounding microstrip is at least equal to or more than 1/8 wavelength of the monitored frequency. The width of the grounding wire of the finite grounding microstrip is 2-5 times of that of the signal wire of the finite grounding microstrip. In the design, the influence of the grounding layout under an RFIC (radio-frequency integrated circuit) on the radiating efficiency of the antenna is limited.
Description
Technical field
The present invention relates to antenna, relate in particular to dipole antenna.
Background technology
For the antenna that can be installed in the handheld device is provided, usually antenna is made as the part of PCB.Technical, such antenna is tending towards being powered by " little band (microstrip) ", little band is the PCB structure that comprises the ground plane among the PCB, and little band is positioned at the below of signal lead (signal trace), and the width of ground plane is about 10 times of width of signal lead herein.This antenna is generally unipole antenna, IFA antenna or PIFA antenna, and it need be provided with RF ground connection to constitute radiation mechanism on PCB.
The radiation efficiency of this antenna is subjected to the influence of radio frequency (RF) ground connection of antenna, and this disturbs the transmission from the signal of antenna.Therefore, covered the RF earth element if hold the hand of handheld device, then the radiation efficiency of handheld device descends significantly.
Therefore, a lot of radio hand-held equipments have the problem that electromagnetic energy is absorbed by the person's of holding hand portion ground.This phenomenon is called as " hand effect ".
A kind of solution of proposition provides the antenna with coaxial cable.This has reduced the influence of RF earth element to aerial radiation.Yet the cost that coaxial cable is soldered to antenna is very high and very difficult.In addition, coaxial cable needs certain space, therefore, is difficult to coaxial cable is offered the PCB antenna.
Therefore, expectation provides a kind of antenna that can partly alleviate the problems referred to above at least.
Summary of the invention
The present invention proposes a kind of dipole antenna, comprises substrate, and it has first surface and second surface, and described surface is towards rightabout; Described first surface has the strip of conductive material that forms the first linear cabling; The first linear cabling has the bending that forms first radiation arm, and the described first linear cabling extends from the signal mixing end; Second surface has the strip of conductive material that forms the second linear cabling; The second linear cabling has the bending that forms second radiation arm, and the described second linear cabling extends from earth element; Wherein the width of the second linear cabling is narrower than the width of RF earth element; Thereby the RF earth element is away from first and second radiation arms.
The structure of the first linear cabling and the second linear cabling is called as " the little band of limited ground connection ", and wherein the width of the first linear cabling is 2 to 5 times.Advantageously, test data shown the little band of limited ground connection can with the little band of tradition with efficient ground Transmission Microwave.
The second linear cabling that is connected to earth element provides " the ground connection cabling " of antenna.Typically, the second linear cabling is generally the rectangular or band of the electric conducting material between earth element and the radiation arm.In fact, this is provided with a segment distance between the earth element of antenna and radiation arm.Therefore, can not be grounded layer from the signal of radiation arm absorbs in any significant mode or disturbs.And the width that the second linear cabling has is narrower than the width of earth element.Narrower width is meant that the surf zone of the second linear cabling is littler than ground plane, and this can reduce the ground connection effect and to the interference of radiation arm radiation.
Preferably, two radiation arms is equal to or less than 1/4 wavelength of preset frequency in conjunction with length.1/4 wavelength of each arm is the demand of standard 50 Ω dipole antennas.
At random, earth element has the tapered portion that is connected to the second linear cabling.Advantageously, tapered portion reduces the zone of the contiguous radiation arm of earth element, and further reduces the influence of earth element to radiation diagram.
Preferably, the length of the first and second linear cablings is 1/8 wavelength of preset frequency or greater than 1/8 wavelength of preset frequency at least.This means the first linear cabling and the second linear cabling little band of the limited ground connection of formation that (is generally parallel) together, the length of the little band of limited ground connection is equal to or greater than 1/8 wavelength of preset frequency.This allows earth element to leave the radiation arm one segment distance setting of antenna, and this distance depends on the length of the little band of limited ground connection.Therefore, can not be grounded element from the signal of radiation arm absorbs in any significant mode or disturbs.
At random, earth element has the width of 1/2 wavelength, so earth element can reflect the signal from antenna.Advantageously, this makes radiation diagram become possibility towards the direction location that first and second radiation arms point to slightly.Therefore, when pointing to controlled target, can be more effective with the remote controllers that the antenna of this proposition is realized.
Advantageously, effectively energy coupling between first and second conducting elements of the little band permission of the limited ground connection that the first and second linear cablings form antenna promptly, is transmitted between RFIC and radiation arm.This is the power supply technique of other for example be coupled power supply and little band balanced-to-unblanced transformer power supplies (microstrip balun feeding) relatively, can reduce energy loss.Compare with other power supply techniques of for example coaxial cable power supply, this can also reduce the demand of cost and linkage editor.
In addition, because earth element is set to apart from a bit of distance of radiation arm, so to radiation arm bending, folding or curvedly have leeway, and do not need to arrange too closely with earth element.This also allows radiation arm to design in a different manner so that be fit to feature on the circuit board, and does not need to weld coaxial cable.This has reduced additional cost of manufacture for the cost of making PCB.
Therefore, the small-print dipole antenna of the present invention's making can be installed to any handheld device easily.
In addition, use the little band of limited ground connection of 1/4 wavelength to make the very little PCB antenna of making become possibility, wherein total-width ratio 1/2 wavelength of two radiation arms is much smaller.
Description of drawings
In conjunction with the accompanying drawing of the possible arrangement of corresponding explanation the present invention, further describe the present invention with more convenient, wherein similar Reference numeral refers to similar parts.The present invention also may exist other to arrange, so the details of accompanying drawing can not be interpreted as the general of the aforementioned description of the present invention substituted.
Fig. 1 illustrates the plane graph of first embodiment of the invention;
Fig. 2 is the isometric chart of the embodiment of Fig. 1;
Fig. 3 is the exploded view of first embodiment shown in Figure 1;
Fig. 4 illustrates the radiation diagram of variation of the embodiment of Fig. 1;
Fig. 5 illustrates the another kind of radiation diagram that changes of embodiment of Fig. 1;
The another kind that Fig. 6 illustrates first embodiment changes;
Fig. 7 illustrates another variation of first embodiment;
Fig. 8 illustrates another variation of first embodiment; And
Fig. 9 illustrates another variation of first embodiment.
Embodiment
Fig. 1 illustrates the plane graph of dipole antenna 100.Fig. 2 illustrates the isometric chart of antenna 100.Fig. 3 is the exploded view of Fig. 2.
One end of first conducting element 103 is connected to the signal mixing end of radio frequency integrated circuit (RFIC) 107, that is, input/output end port is to send and to receive wireless signal.Therefore, first conducting element 103 is " signal lead " of antenna 100.
The other end of first conducting element 103 extends a segment distance linearly from RFIC 107, and is crooked then to form first radiation arm 109.Because crooked, first radiation arm 109 is to side direction and extend back.This causes first conducting element 103 to be hook-type.From the elongate portion of first conducting element 103 in the knee of RFIC 107 linear extension to the first radiation arms 109 is the first linear cabling 111 of antenna 100.
Second conducting element 105 extends and as " ground connection cabling (the ground trace) " of antenna 100 from RF earth element 113.Typically, RF earth element 113 is connected to the ground wire of RFIC 107, and first conducting element 103 extends from the ground wire of RFIC 107.The elongated linear portion 117 of second conducting element 105 between the knee of the earth element 113 and second radiation arm 115 is second linear cablings 117 of antenna 100.From the knee, second conducting element 105 forms second radiation arm 115.In the mode similar to first radiation arm 109,115 bendings of second radiation arm are with to side direction with extend back and form hook-type.
Second radiation arm is bent to extend along basic opposite with first radiation arm bearing of trend direction." substantially " is meant that radiation arm 109,115 does not strictly oppositely separate 180 ° herein, as long as reach the purpose of the abundant radiation of dipole antenna.
The radiation arm that oppositely extends from the knee of each radiation arm provides dipole antenna, and first radiation arm 109 and second radiation arm 115 form two radiation arms of dipole antenna 100.
Preferably, the length of each radiation arm is equal to or less than 1/4 wavelength of the frequency that monitors.If desired, the effective length of two radiation arms can according to well known to a person skilled in the art the optimum Match principle by the operation vector network analyzer regulate.
The first linear cabling 111 be parallel to usually the second linear cabling 117 from earth element 113 extend linearly with the second linear cabling 117 from the about identical distance of RFIC 107 extended distances.Therefore, the first linear cabling 111 and the second linear cabling 117 provide " the little band of limited ground connection " structure.It is a kind of electric transmission line that those skilled in the art understand " little band ", and it can utilize PCB technology to make, and can be used to transmit electromagnetic signal.Little band is usually by forming by the conducting strip of dielectric base and surface separation.In this embodiment, " the little band of limited ground connection " is used in particular for relating to the first parallel linear cabling 111 and the slim-lined construction of the second linear cabling 117.
Preferably, the length (on the z axle) that has of the little band of limited ground connection is equal to or greater than 1/8 wavelength of the frequency of its monitoring.That is to say that each in the parallel first and second linear cabling lines (linear trace line) is minimum to be 1/8 wavelength.Typically, be approximately 2.4 to 2.5GHz (international disposable ISM bandwidth).The little band of limited ground connection can be effectively from two radiation arms 109,115 transmission of power of RFIC to antenna 100.
If desired, the effective length of each radiation arm can according to well known to a person skilled in the art the optimum Match principle by the operation vector network analyzer regulate.The width of the first linear cabling 111, promptly the extending direction of signal lead is horizontal, is narrower than the respective width of the second linear cabling 117.Preferably, the width of the second linear cabling 117 is between 2 to 5 times of width of the first linear cabling 111.More preferably, the width of the second linear cabling 117 is 3 to 4 times of width of the first linear cabling 111.
On the other hand, the electric conducting material that the second linear cabling 117 is elongate strip, it is narrower than RF earth element 113.The narrower width of the second linear cabling 117 has reduced the influence of ground in the face of radiation arm 105,115, that is, and and not the second linear cabling 117 so unobvious than the ground effect in the zonule.This makes ground effect in the second linear cabling 117 can not disturb or absorb the signal radiation from radiation arm.
In addition, RF earth element 113 is separated by the length of the second linear cabling 117 apart from radiation arm 109,115 certain distances.Therefore, prevented interference of RF earth element or absorption radiation significantly from radiation arm 109,115.
The design principle of the width of signal lead is identical with the design principle that well known to a person skilled in the art the little band of 50 Ω, does not need to go through at this.
Therefore, radiation arm and the little band of limited ground connection make antenna become " independence " antenna together, and promptly the radiation efficiency of 113 pairs of antennas of RF earth element produces slight influence or not influence.Because RF earth element 113 does not influence aerial radiation, so RF earth element 113 can seriously not influence radiation efficiency as in non-stand-alone antenna (wherein RF earth element 113 influences radiation efficiency).Therefore, user's hand covers the RF earth element 113 unlikely radiation efficiencies that influence in the handheld device.
Preferably, the length of the little band of whole limited ground connection is greater than 1/8 wavelength of preset frequency.Provide sufficient distance between the RF earth element 113 of this minimum length for radiation arm 109,115 and RFIC below.This provides good radiation efficiency for dipole antenna.
In addition, radiation arm 109,115 can be designed as the form of folding, straight line or curve.Because RF earth element 113 is away from radiation arm, therefore for radiation arm is designed to bending, form folding or curve provides leeway, and that any part of radiation arm does not need to be designed to is too near so that produce signal and disturb apart from RF earth element 113.Therefore, two radiation arms 109,115 can be bent to be installed in the space of width less than 1/2 wavelength, and the physical length with radiation arm remains 1/2 wavelength simultaneously.This allows antenna to be installed in the small hand held devices.Conversely, undersized antenna is provided at PCB and goes up printed antenna only needs to increase a small amount of cost of manufacture on the required cost of other parts of making PCB advantage.
In a distortion of present embodiment, the width of RF earth element 113 is reduced to and is equal to or less than 1/4 of the wavelength of monitoring.With reference to Fig. 6, wherein ground 119 is adjusted to 1/4 wavelength to the improvement of antenna shown in Figure 1 100.At this width, the influence of the radiation diagram of 113 pairs of antennas 100 of RF earth element even littler, radiation diagram is omnibearing naturally.Fig. 5 illustrates radiation diagram, and the expression radiation evenly distributes on all directions usually.The top of Fig. 5 illustrates when when the x direction is observed, and antenna 100 is in vertical direction a little that elongate radiation distributes.Yet bottom diagram illustrates the uniform comprehensive distribution when radiation when the y direction is observed.
Though as previously mentioned, the influence of 113 pairs of radiation efficiencies of RF earth element is very little, and the shape of RF earth element 113 can be used for improving radiation diagram at some among a small circle.Therefore, in the further variation of this embodiment, the width of RF earth element 113 is set to about 1/2 wavelength.Useful is that at this width, RF earth element 113 is also as gentle signal reflectors.Therefore, radiation diagram will be directed slightly, towards the direction of being pointed out by the z axle, and have strong gain towards the place ahead.Therefore, with " the place ahead " of the z axle sensing equipment of antenna in the radio hand-held equipment of antenna 100 enforcements, described radio hand-held equipment will have the gain more by force towards the direction of radio hand-held equipment indication.This feature is useful in the equipment of for example remote controllers, wherein preferably, slight gain is more by force arranged on the equipment direction.Fig. 4 illustrates slight directional radiation.
Fig. 7 illustrates the another kind of conversion of embodiment, and wherein RF earth element 113 has the width of 1/2 wavelength, is taper with second little part with the 117 RF earth elements 113 that are connected still, and at 121 places, angle is less than 100 °.Such taper RF earth element 113 has removed the corner of RF earth element 113 shown in Figure 1.This has further reduced part RF earth element 113 near radiation arm 109,115.The radiation diagram that obtains is similar to the RF earth element 113 less than 1/4 wavelength shown in Fig. 5.It should be noted that in this embodiment, the width of RF earth element 113 shows that the part as the represented RF earth element 113 of Reference numeral 119 is not taper.As in embodiment before, the width of the second linear cabling 117 is narrower than the width of RF earth element 113, and the width of the first linear cabling 111 is narrower than the width of the second linear cabling 117.The variation of aforesaid embodiment, the width of the second linear cabling 117 is between 2 to 5 times of the width of the first linear cabling 111.More preferably, the width of the second linear cabling 117 is 3 to 4 times of width of the first linear cabling 111.
The another kind that Fig. 8 illustrates embodiment changes, and wherein the radiation arm 109,115 in the first and second conducting element linear extension zones extends in opposite direction.In this situation, PCB has to be fit to the whole length (entire breath) of the opposite radiation arm that extends, and space efficiency is less than before the alternate embodiment with bending or folding radiation arm 109,115.
Fig. 9 illustrates another variation of embodiment, and wherein each radiation arm 109,115 is the form of broad warp.
In fact, two radiation arms 109,115 can meet the outward appearance of different product and PCB.
In the another variation of embodiment, the signal lead of the little band of limited ground connection is not connected directly to RFIC, but connects by matching network (as well known to those skilled in the art how to make input impedance more near 50 Ω).Fig. 6, Fig. 7 and embodiment shown in Figure 9 show the contact 121 of the matching network that replaces RFIC.
Advantageously, compare with other coupling techniques, for example coupling power supply and the power supply of little band balanced-to-unblanced transformer, the little band of described limited ground connection can reduce energy loss.In addition, the little band of limited ground connection has reduced required cost and the demand of complicated linkage editor (for example other transmission line technology of the coaxial cable power supply of the accurate welding of needs).
The little band of the experiment described limited ground connection of demonstration can be imitated ground Transmission Microwave energy together with the little band of tradition.
Therefore, described embodiment comprises dipole antenna, and it comprises: have the substrate of first surface and second surface, described surface is towards rightabout; First surface has the strip of conductive material that forms the first linear cabling 111, and the first linear cabling 111 has the bending that forms first radiation arm 109, and the first linear cabling 111 extends from the signal mixing end; Second surface has the strip of conductive material that forms the second linear cabling 117, and the second linear cabling 117 has the bending that forms second radiation arm 115, and the second linear cabling 117 extends from RF earth element 113; Wherein the width of the second linear cabling 117 is narrower than the width of RF earth element 113; Thereby RF earth element 113 is away from first and second radiation arms 109,115.
Those skilled in the art are understood that in fact, the minimum dimension of RF earth element 113 is by the zone decision that is used to cover the whole RF related elements on the PCB.And, depend on signal lead 103 although described the width of ground connection cabling 105, the width of signal lead 103 depend on the height of PCB substrate 101 and be used in signal lead 103 and ground connection cabling 105 between insulating material 101.
Although above-mentioned declarative description the preferred embodiments of the present invention 100, what those skilled in the art should understand that is under the situation of the scope that does not break away from claim of the present invention, can to the design, the structure or the operation details make many variations and change.
For example, although described be that antenna is printed on the PCB, those skilled in the art understand disclosed principle and are not limited to only be used for printed antenna.It also is feasible adopting the other forms of antenna of principle of identity, for example the non-small size antenna of machine-building or be etched in antenna in the semiconductor integrated circuit.
Claims (6)
1. dipole antenna comprises:
Substrate, it has first surface and second surface, and described surface is towards rightabout;
Described first surface has the strip of conductive material that forms the first linear cabling;
The described first linear cabling has the bending that forms first radiation arm, and the described first linear cabling extends from the signal mixing end;
Described second surface has the strip of conductive material that forms the second linear cabling;
The described second linear cabling has the bending that forms second radiation arm, and the described second linear cabling extends from the RF earth element; Wherein
The width of the described second linear cabling is 2 to 5 times of width of the described first linear cabling; And
The width of the described second linear cabling is narrower than the width of described RF earth element; Thereby
Described RF earth element is away from described first and second radiation arms.
2. dipole antenna according to claim 1, wherein
The length of the described first and second linear cablings is equal to or greater than 1/8 wavelength of preset frequency.
3. dipole antenna according to claim 1, wherein
The pattern length of two radiation arms is equal to or less than 1/2 wavelength of preset frequency.
4. according to any described dipole antenna in the claim 1 to 3, wherein
Described RF earth element has the width of 1/2 wavelength; Thereby
Described RF earth element can reflect the signal from described antenna.
5. according to any described dipole antenna in the claim 1 to 3, wherein
Described RF earth element has the width that is equal to or less than 1/4 wavelength; Thereby
Described RF earth element has the influence that reduces to the shape of radiation diagram.
6. according to above-mentioned any described dipole antenna of claim, wherein
Described RF earth element has the tapered portion that is connected to the second linear cabling, thereby
Described RF earth element is further from described radiation arm.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101106787A CN102142603A (en) | 2010-01-29 | 2010-01-29 | Dipole antenna |
| CN2011800077633A CN102859792A (en) | 2010-01-29 | 2011-01-28 | Dipole antenna |
| MYPI2012002162A MY184420A (en) | 2010-01-29 | 2011-01-28 | Dipole antenna |
| PCT/CN2011/070736 WO2011091763A1 (en) | 2010-01-29 | 2011-01-28 | Dipole antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101106787A CN102142603A (en) | 2010-01-29 | 2010-01-29 | Dipole antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102142603A true CN102142603A (en) | 2011-08-03 |
Family
ID=44318673
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101106787A Pending CN102142603A (en) | 2010-01-29 | 2010-01-29 | Dipole antenna |
| CN2011800077633A Pending CN102859792A (en) | 2010-01-29 | 2011-01-28 | Dipole antenna |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800077633A Pending CN102859792A (en) | 2010-01-29 | 2011-01-28 | Dipole antenna |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN102142603A (en) |
| MY (1) | MY184420A (en) |
| WO (1) | WO2011091763A1 (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102664303A (en) * | 2012-04-27 | 2012-09-12 | 深圳光启创新技术有限公司 | Electronic device with built-in antenna |
| CN102769179A (en) * | 2012-06-29 | 2012-11-07 | 深圳光启创新技术有限公司 | Built-in antenna and electronic equipment |
| CN103022682A (en) * | 2012-12-28 | 2013-04-03 | 上海科世达-华阳汽车电器有限公司 | Vehicle-mounted antenna |
| CN103545616A (en) * | 2013-11-06 | 2014-01-29 | 中国计量学院 | Narrow-band microstrip antenna with U-shaped notch |
| CN104241841A (en) * | 2014-09-30 | 2014-12-24 | 东南大学 | Broadband planar umbrella-type coplanar vibrator antenna of dual-band trapped wave reflector |
| CN104241838A (en) * | 2014-09-30 | 2014-12-24 | 东南大学 | Broadband plane coplanar dipole antenna of dual-band trapped wave reflector |
| CN104269626A (en) * | 2014-09-30 | 2015-01-07 | 东南大学 | Broadband planar umbrella-shaped element antenna with notch reflector |
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| CN105161835A (en) * | 2015-08-19 | 2015-12-16 | 南京邮电大学 | Wide-beam planar circularly polarized antenna |
| CN105305042A (en) * | 2015-09-29 | 2016-02-03 | 南京邮电大学 | Double-frequency circular polarization plane antenna |
| CN110911810A (en) * | 2018-09-18 | 2020-03-24 | 康普技术有限责任公司 | Compact antenna radiating element |
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| US10128579B2 (en) * | 2015-02-13 | 2018-11-13 | Commscope Technologies Llc | Dipole antenna element with open-end traces |
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- 2011-01-28 WO PCT/CN2011/070736 patent/WO2011091763A1/en active Application Filing
- 2011-01-28 MY MYPI2012002162A patent/MY184420A/en unknown
- 2011-01-28 CN CN2011800077633A patent/CN102859792A/en active Pending
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| CN1525597A (en) * | 2003-02-28 | 2004-09-01 | 友讯科技股份有限公司 | Plane double L-type double-frequency antenna |
| US7050014B1 (en) * | 2004-12-17 | 2006-05-23 | Superpass Company Inc. | Low profile horizontally polarized sector dipole antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102664303B (en) * | 2012-04-27 | 2016-01-20 | 深圳光启创新技术有限公司 | There is the electronic installation of built-in antenna |
| CN102664303A (en) * | 2012-04-27 | 2012-09-12 | 深圳光启创新技术有限公司 | Electronic device with built-in antenna |
| CN102769179A (en) * | 2012-06-29 | 2012-11-07 | 深圳光启创新技术有限公司 | Built-in antenna and electronic equipment |
| CN103022682A (en) * | 2012-12-28 | 2013-04-03 | 上海科世达-华阳汽车电器有限公司 | Vehicle-mounted antenna |
| CN103022682B (en) * | 2012-12-28 | 2016-08-10 | 上海科世达-华阳汽车电器有限公司 | A kind of car antenna |
| CN103545616A (en) * | 2013-11-06 | 2014-01-29 | 中国计量学院 | Narrow-band microstrip antenna with U-shaped notch |
| CN103545616B (en) * | 2013-11-06 | 2017-01-11 | 中国计量学院 | Narrow-band microstrip antenna with U-shaped notch |
| CN104241841A (en) * | 2014-09-30 | 2014-12-24 | 东南大学 | Broadband planar umbrella-type coplanar vibrator antenna of dual-band trapped wave reflector |
| CN104269624A (en) * | 2014-09-30 | 2015-01-07 | 东南大学 | Umbrella-shaped element antenna with notch reflector |
| CN104269626A (en) * | 2014-09-30 | 2015-01-07 | 东南大学 | Broadband planar umbrella-shaped element antenna with notch reflector |
| CN104241838A (en) * | 2014-09-30 | 2014-12-24 | 东南大学 | Broadband plane coplanar dipole antenna of dual-band trapped wave reflector |
| CN105161835A (en) * | 2015-08-19 | 2015-12-16 | 南京邮电大学 | Wide-beam planar circularly polarized antenna |
| CN105161835B (en) * | 2015-08-19 | 2018-01-30 | 南京邮电大学 | A kind of broad beam plane circular polarized antenna |
| CN105305042A (en) * | 2015-09-29 | 2016-02-03 | 南京邮电大学 | Double-frequency circular polarization plane antenna |
| CN105305042B (en) * | 2015-09-29 | 2017-11-17 | 南京邮电大学 | A kind of double frequency round polarized flat plane antenna |
| CN110911810A (en) * | 2018-09-18 | 2020-03-24 | 康普技术有限责任公司 | Compact antenna radiating element |
| US11831085B2 (en) | 2018-09-18 | 2023-11-28 | Commscope Technologies Llc | Compact antenna radiating element |
| CN111370858A (en) * | 2018-12-25 | 2020-07-03 | 杭州海康威视数字技术股份有限公司 | Directional UHF antenna and electronic equipment |
| CN111370858B (en) * | 2018-12-25 | 2022-11-01 | 杭州海康威视数字技术股份有限公司 | Directional UHF antenna and electronic equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2011091763A1 (en) | 2011-08-04 |
| CN102859792A (en) | 2013-01-02 |
| MY184420A (en) | 2021-04-01 |
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