CN102738555B - Handheld device and radiation pattern adjusting method - Google Patents
Handheld device and radiation pattern adjusting method Download PDFInfo
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- CN102738555B CN102738555B CN201110127205.2A CN201110127205A CN102738555B CN 102738555 B CN102738555 B CN 102738555B CN 201110127205 A CN201110127205 A CN 201110127205A CN 102738555 B CN102738555 B CN 102738555B
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- 230000005855 radiation Effects 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 title claims abstract description 14
- 230000001808 coupling effect Effects 0.000 claims abstract description 20
- 238000007667 floating Methods 0.000 claims abstract description 3
- 230000000694 effects Effects 0.000 claims description 14
- 230000008859 change Effects 0.000 claims description 13
- 239000000725 suspension Substances 0.000 claims description 11
- 230000001939 inductive effect Effects 0.000 claims description 5
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010295 mobile communication Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 230000005404 monopole Effects 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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Abstract
A handheld device and a radiation pattern adjusting method are provided. The handheld device is provided with a top direction and a bottom direction and comprises a radiator and a guide body, wherein the radiator is provided with a radiation field type, the guide body is arranged in the bottom direction of the radiator in a floating mode, is separated from the radiator by a gap, can generate a coupling effect with the radiator, and is used for adjusting the radiation field type according to the coupling effect so that the radiation field type can point to the top direction.
Description
[technical field]
The present invention is about a kind of handheld apparatus and radiation pattern method of adjustment.In more detail, the present invention is about a kind of handheld apparatus and the radiation pattern method of adjustment of improving antenna radiation patterns.
[background technology]
Flourish along with wireless communication technology, and Wireless Telecom Equipment is universal, various mobile communications device has become modern and to have lived indispensable electronic product.Mobile communications device, except possessing basic communication function, more develops many additional functions and application, wherein comes into one's own most with global coordinate system (GlobalPositioningSystem, GPS) positioning function again.
Generally speaking, the signal of the required transmitting-receiving in GPS location is mainly from satellite-signal, in various mobile communications device, in the majority with the handheld apparatus of user's use habit of arranging in pairs or groups again, and the antenna be configured in handheld apparatus, for the ease of receiving the signal of base station, all be designed to the antenna radiation patterns on horizontal plane (xy plane) with omni-directional (omni-directional), but relatively in vertical direction, the signal reception in (+z direction) is just more weak, therefore when when handheld apparatus uses GPS positioning function, wish receives the satellite-signal from sky direction (i.e.+z direction), just there is the shortcoming that Received signal strength is not good.
In order to improve the handheld apparatus shortcoming that Received signal strength is not good on+z direction, the common practice is that use such as the integrated packages (lumpedelement) such as resistance, inductance or electric capacity improve the impedance matching of antenna, utilize the mode improving impedance matching to improve the radiation gain of antenna, and then strengthen the Received signal strength ability of antenna.But such practice is only improve the average gain of antenna patterns illustrated (averagegain), and cannot change the radiation pattern of antenna, therefore still quite limited for the effect improving Received signal strength ability on+z direction.
In sum, how to design one for the antenna of handheld apparatus, make it on+z direction, have preferably Received signal strength ability, the real operator for this field needs the problem of solution badly.
[summary of the invention]
An object of the present invention is to provide a kind of handheld apparatus, this handheld apparatus has a top-direction and a bottom direction, and comprise a radiant body and a guide way, this radiant body has a radiation pattern, this guide way suspension joint is arranged at this bottom direction of this radiant body, with this radiant body at a distance of a gap, can produce a coupling effect with this radiant body, and in order to adjust this radiation pattern according to this coupling effect, this top-direction can be pointed in order to do this radiation pattern.
Another object of the present invention is to the radiation pattern method of adjustment that an a kind of handheld apparatus is provided, this handheld apparatus has a top-direction and a bottom direction, and comprise a radiant body, this radiant body has a radiation pattern and an input impedance, this radiation pattern method of adjustment comprises the following step: (a) arranges a guide way in this bottom direction suspension joint of this radiant body, a coupling effect can be produced with this radiant body in order to do this guide way, point to this top-direction to make this radiation pattern; Wherein, this guide way and this radiant body are at a distance of a gap, and this guide way has a length; B () changes the size in this gap to adjust this radiation pattern and this input impedance; And (c) changes this length to adjust this radiation pattern and this input impedance.
Handheld apparatus of the present invention arranges guide way by the bottom direction suspension joint in radiant body, and make guide way and radiant body at a distance of a gap, to make guide way can produce coupling effect with radiant body, in order to do the top-direction that the radiation pattern of radiant body can be made by coupling effect to point to handheld apparatus.By this, the present invention can overcome in prior art, and handheld apparatus, in the not good shortcoming of top-direction Received signal strength, has the advantage of the average gain improving handheld apparatus simultaneously.
After consulting execution mode that is graphic and that describe subsequently, this technical field has knows that the knowledgeable just can understand other object of the present invention usually, and technological means of the present invention and implement aspect.
[accompanying drawing explanation]
Fig. 1 is the schematic diagram of first embodiment of the invention;
Fig. 2 is the measurement figure of the radiant body of first embodiment of the invention;
Fig. 3 is the broken line graph of positive naturalization episphere gain;
Fig. 4 is the broken line graph of positive naturalization directive property;
Fig. 5 is the broken line graph of positive naturalization average gain; And
Fig. 6 is the schematic diagram of second embodiment of the invention.
[primary clustering symbol description]
1: handheld apparatus
11: radiant body
11a: load point
11b: earth point
13: guide way
15: system ground
201: the first centre frequencies
202: the second centre frequencies
6: handheld apparatus
6a: body
6b: shell
61: radiant body
63: guide way
65: system ground
[embodiment]
Below will explain content of the present invention by embodiment, embodiments of the invention and be not used to restriction the present invention can must implement in any specific environment as described embodiments, application or particular form.Therefore, the explanation about embodiment is only explaination object of the present invention, and is not used to limit the present invention.Must expositor, following examples and graphic in, the assembly relevant to non-immediate of the present invention omits and does not illustrate, and graphic in the size relationship of each inter-module be only and ask easy understanding, be not used to restriction actual ratio.
The first embodiment of the present invention is a handheld apparatus 1, and its schematic diagram is depicted in Fig. 1.For convenience of follow-up explanation, hereby first define the relative direction of handheld apparatus 1, refer to Fig. 1, in this specification, the top-direction of definition handheld apparatus 1 is+z direction, the bottom direction of handheld apparatus 1 is-z direction, and handheld apparatus 1 is perpendicular to xy plane, wherein ,+z direction is towards skyward direction, namely towards the direction of satellite, xy plane is the plane parallel with ground level.The direction that this specification defines is only explaination object of the present invention, and the relative direction of handheld apparatus 1 must look actual service condition and different, not in order to limit the scope of the invention.
Handheld apparatus 1 comprises radiant body 11, guide way 13 and a system ground 15, guide way 13 is arranged at the bottom direction (such as guide way 13 is configurable or be attached on an insulation bearing part) of radiant body 11, i.e.-z the direction of radiant body 11, be positioned at a side of system ground 15, and do not contact with radiant body 11 and system ground 15 (anticipate and be not namely electrically connected), namely guide way 13 presents suspension joint (floating) state.Guide way 13 has a length L, and and at a distance of a clearance G between radiant body 11, wherein, radiant body 11, guide way 13 and system ground 15 all realize with conductive material, and the conductive material the most often used is metallic copper, but is not limited with metallic copper.
The person of should be specified, in the present embodiment, guide way 13 suspension joint arranges a side of system ground 15, in other embodiment, guide way 13 also based on the consideration of space matching, can be arranged at other position, such as can be arranged on overlapping with system ground 15 or underlying space, but do not contact with system ground 15, accordingly, the setting position of guide way 13 is not in order to limit the scope of the invention.
Radiant body 11 is in order to receive and dispatch a radiofrequency signal, and it has one first current resonance path and operates in one first centre frequency, and this first centre frequency is determined by this first current resonance path.Radiant body 11 can in this first centre frequency radiation to form a radiation pattern and to have an input impedance.In the present embodiment, radiant body 11 is a printing type aerial, and namely radiant body 11 is printed on a substrate, in other embodiment, radiant body 11 also can be one with the stereoscopic antenna of sheet metal cutting, and the implementation of radiant body 11 is not in order to limit the scope of the invention.
Radiant body 11 has an a load point 11a and earth point 11b, load point 11a and a back-end system circuit (scheming not illustrate) are electrically connected, in order to transmit and to process this radiofrequency signal, earth point 11b is electrically connected by through hole (via) or wire and system ground 15, in order to provide radiant body 11 1 grounding characteristics, the visual practical situations in position of load point 11a and earth point 11b adjusts, and is not limited to position as shown in Figure 1.Separately not should be specified person, in order to exemplify, the radiant body 11 of the present embodiment only illustrates that the one of the antenna be arranged in handheld apparatus 1 implements aspect, in other embodiment, radiant body also can adopt as plane inverse-F formula (inverted-F) antenna, one pole (monopole) antenna or other can in order to receive and dispatch the antenna frame of this radiofrequency signal, the enforcement aspect of radiant body is not in order to limit the scope of the invention.
Guide way 13 can produce one with radiant body 11 and to be coupled (coupling) effect, and this coupling effect can change the CURRENT DISTRIBUTION on system ground 15, meanwhile, can produce an induced current on guide way 13.Specifically, because radiant body 11 has this first current resonance path can in this first centre frequency radiation, and guide way 13 only with radiant body 11 at a distance of a minim gap G, therefore correspondingly this coupling effect can be produced between guide way 13 and radiant body 11, namely guide way 13 is passed to by a part of electromagnetic field of radiant body 11 radiation, so guide way 13 produces this induced current by this coupling effect.Because guide way 13 has a length L, thus this induced current just forms one second current resonance path on guide way 13, and this second current resonance path can make radiant body 11 have one second centre frequency.
Please refer to Fig. 2, it is the measurement figure measuring radiant body 11.Transverse axis represents frequency, and unit is 1,000,000,000 hertz (GHz), the longitudinal axis represent the voltage standing wave ratio (VoltageStandingWaveRatio, VSWR) that measures.As shown in Figure 2, radiant body 11 has preferably voltage standing wave ratio in the first centre frequency 201 and the second centre frequency 202, wherein, first centre frequency 201 determined by the first current resonance path, second centre frequency 202 determined by the second current resonance path, in addition, the second centre frequency 202 adjusts by the change length L of guide way 13 or the size of clearance G.
Due to this coupling effect, the electromagnetic field of a part also can be passed to system ground 15, and then changes the CURRENT DISTRIBUTION on system ground 15.Specifically, this coupling effect will make the electric current on system ground 15 increase, in other words, by-z the direction having more CURRENT DISTRIBUTION in radiant body 11.
The electric current that induced current on guide way 13 and system ground 15 increase similarly can produce radiation, therefore can in order to change this radiation pattern of radiant body 11.Specifically, Constructive interaction can be formed at the far field in+z direction (farfield) by one first electromagnetic wave of radiant body 11 radiation and one second electromagnetic wave of guide way 13 and system ground 15 radiation, that is this first electromagnetic wave and this second electromagnetic wave form the effect of superposition in far field, such effect can make this radiation pattern of radiant body 11 point to+z direction, that is this radiation pattern has higher gain (gain) in+z direction.Thus, handheld apparatus 1 just has preferably signal transmitting and receiving ability in+z direction, contributes to receiving the satellite-signal from+z direction.
In order to understand the impact of guide way 13 on this radiation pattern of radiant body 11, below list the change of the episphere gain of this radiation pattern.For convenience of follow-up explanation, the episphere gain of this radiation pattern of the radiant body 11 when not arranging guide way 13 will be represented below with the first episphere gain, the episphere gain of this radiation pattern of the radiant body 11 when arranging guide way 13 is represented with the second episphere gain, and for the ease of comparing, definition one positive naturalization (normalized) episphere gain is that the second episphere gain deducts the first episphere gain.
Refer to Fig. 3, it is the broken line graph of positive naturalization episphere gain, and transverse axis is the change of the length L of guide way 13, and unit is millimeter (millimeter); The longitudinal axis is the gain of positive naturalization episphere, and unit is dB; List in figure when various different length L value and clearance G value, the numerical value of positive naturalization episphere gain.As seen from the figure, the value of positive naturalization episphere gain is all greater than 0, namely represent when guide way 13 is set, the episphere gain of radiant body 11 higher than the episphere gain of radiant body 11 when not arranging guide way 13, and by the episphere gain of adjustment length L value and clearance G value adjustable radiant body 11.
The distribution of one antenna radiation patterns is still weighed by directive property (directivity), for convenience of follow-up explanation, to represent that with the first directive property radiant body 11 is in the directive property in+z direction when not arranging guide way 13 below, representing that radiant body 11 is in the directive property in+z direction when arranging guide way 13 with the second directive property.In order to have a clear understanding of the impact of guide way 13 on this radiation pattern of radiant body 11, with a positive naturalization directive property of giving a definition be the second directive property divided by the first directive property, the impact of guide way 13 on the directive property of radiant body 11 can be learnt by positive naturalization directive property.
Refer to Fig. 4, it is the broken line graph of positive naturalization directive property, and transverse axis is the change of the length L of guide way 13, and unit is millimeter; The longitudinal axis is positive naturalization directive property; List in figure when various different length L value and clearance G value, the numerical value of positive naturalization directive property.As seen from the figure, the value of normalization directive property is all greater than 1, the directive property of radiant body 11 when namely representing that when arranging guide way 13, the directive property of radiant body 11 is better than not arranging guide way 13, and by adjusting the directive property of length L value and clearance G value adjustable radiant body 11.
On the other hand, the clearance G between guide way 13 and radiant body 11 can form a capacity effect, and the length L of guide way 13 can form an inductive effect, and this capacity effect and this inductive effect all can affect this input impedance value of radiant body 11.Specifically, this capacity effect can increase the capacitance of this input impedance of radiant body 11, this capacity effect then can increase the inductance value of this input impedance of radiant body 11, therefore, by changing the impedance matching of clearance G or length L just adjustable radiant body 11, make this input resistant matching of radiant body 11 to general 50 conventional nurse difficult to understand (ohm) impedances, good impedance matching can improve the radiation gain of radiant body 11.
In order to find out that this capacity effect and this inductive effect are to the improvement effect of this input impedance value of radiant body 11, average gain (averagegain) change of observable radiant body 11, the average gain value of radiant body 11 is higher represents the impedance matching of radiant body 11 better.In like manner, for convenience of follow-up explanation, below will represent when not arranging guide way 13 with the first average gain, the average gain of this radiation pattern of radiant body 11, represent when arranging guide way 13 with the second average gain, the average gain of this radiation pattern of radiant body 11, and for the ease of comparing, definition one positive naturalization (normalized) average gain is that the second average gain deducts the first average gain.
Refer to Fig. 5, it is the broken line graph of positive naturalization average gain, and transverse axis is the change of the length L of guide way 13, and unit is millimeter; The longitudinal axis is positive naturalization average gain, and unit is dB; List in figure when various different length L value and clearance G value, the numerical value of positive naturalization average gain.As seen from the figure, the value of positive naturalization average gain is all greater than 0, namely represent when arranging guide way 13, the average gain of radiant body 11 higher than the average gain of radiant body 11 when not arranging guide way 13, and can have improvement effect in various degree by adjustment length L value and clearance G value.
In sum, by-z the direction in radiant body 11, guide way 13 is set, this radiation pattern of radiant body 11 can be made to point to+z direction, also can improve the impedance matching of radiant body 11 simultaneously, radiant body 11 is made to have higher average gain value, the length L of guide way 13 and clearance G then can moderately adjust, with demand during realistic application.In the present embodiment, radiant body 11 operates in a global positioning system (GlobalPositioningSystem, GPS) frequency range, the adjustment model of length L is about between 60mm to 65mm, the adjustment model of clearance G is about between 0mm to 5mm, demand when only the adjustment model of length L and clearance G must look operation frequency range and the practical application of radiant body 11 and different, be not limited, and the operation frequency range of radiant body 11 is also not limited to GPS frequency range with above-mentioned scope.
The second embodiment of the present invention is a handheld apparatus 6, and its schematic diagram is depicted in Fig. 6.Handheld apparatus 6 comprises a body 6a and a shell 6b, body 6a comprise radiant body 61, guide way 63 and a system ground 65.The Main Differences of the second embodiment and the first embodiment is that the inner surface of wherein this shell on the inner surface that guide way 63 is arranged at shell 6b can have an insulation bearing part (scheming not illustrate), and the attaching of this guide way 63 is configured on this insulation bearing part, when shell 6b is covered in body 6a, guide way 63 just can be positioned at-z the direction of radiant body 61, and with radiant body 61 at a distance of a gap.Should be noted that, this insulation bearing part is not necessary component, when configuration place only having inner surface and guide way 63 as this shell 6b to contact with each other is conductor, just needs this insulation bearing part, to reach the state of aforementioned so-called suspension joint.
Except above-mentioned difference, other technical characteristic of second embodiment and transformable enforcement aspect are all identical with the handheld apparatus 1 described in the first embodiment, and the second embodiment also can perform the first embodiment the operation described and function, art has knows that the knowledgeable can be directly acquainted with the difference between the second embodiment and the first embodiment usually, and second embodiment how based on above-mentioned first embodiment to perform these operation and functions, therefore not repeat.
The third embodiment of the present invention is a kind of radiation pattern method of adjustment for a handheld apparatus.This handheld apparatus has a top-direction (+z direction namely in aforementioned first embodiment) and a bottom direction (-z direction namely in aforementioned first embodiment), and comprising a radiant body, this radiant body has a radiation pattern and an input impedance.
The radiation pattern method of adjustment of the 3rd embodiment comprises the following step, first, perform step (a), this bottom direction suspension joint in this radiant body arranges a guide way, a coupling effect can be produced with this radiant body in order to do this guide way, point to this top-direction to make this radiation pattern; Wherein, this guide way and this radiant body are at a distance of a gap, and this guide way has a length.Then, perform step (b), change the size in this gap to adjust this radiation pattern and this input impedance; And perform step (c), change this length to adjust this radiation pattern and this input impedance.
Except above-mentioned steps, the 3rd embodiment also can perform the first embodiment the operation described and function, and art has knows that the knowledgeable can be directly acquainted with the 3rd embodiment and how to operate and function to perform these based on above-mentioned first embodiment usually, therefore does not repeat.
In sum, the present invention arranges guide way by the bottom direction of the radiant body in handheld apparatus, and make guide way and radiant body at a distance of a gap, coupling effect can be produced with radiant body to make guide way, in order to do the top-direction that the radiation pattern of radiant body can be made by coupling effect to point to handheld apparatus, meanwhile, coupling effect also can improve the impedance matching of radiant body.By this, the present invention can overcome in prior art, and handheld apparatus, in the not good shortcoming of top-direction Received signal strength, has the advantage of the average gain improving handheld apparatus simultaneously.
The above embodiments are only used for exemplifying enforcement aspect of the present invention, and explain technical characteristic of the present invention, are not used for limiting protection category of the present invention.Anyly be familiar with this operator and the arrangement of unlabored change or isotropism can all belong to the scope that the present invention advocates, the scope of the present invention should be as the criterion with claim.
Claims (8)
1. a handheld apparatus, has a top-direction and a bottom direction, comprises:
One radiant body, is configured in this handheld apparatus, and has a radiation pattern; And
One guide way, suspension joint (floating) is arranged at this bottom direction of this radiant body, with this radiant body at a distance of a gap, this guide way has a length, this length extends along with this top-direction toward the direction that this bottom direction is parallel, this guide way can produce one with this radiant body and to be coupled (coupling) effect, this coupling effect increases a radio-frequency current on a system ground of this handheld apparatus to adjust this radiation pattern, can point to this top-direction in order to do this radiation pattern.
2. handheld apparatus according to claim 1, it is characterized in that, this radiant body has more an input impedance, this length of this guide way can form an inductive effect, this gap can form a capacity effect, and this guide way is more in order to adjust this input impedance according to this inductive effect and this capacity effect.
3. handheld apparatus according to claim 1, is characterized in that, this guiding system suspension joint is arranged at a side of this system ground.
4. handheld apparatus according to claim 1, is characterized in that, this handheld apparatus has a shell, and this guiding system suspension joint is arranged on this shell.
5. handheld apparatus according to claim 3, is characterized in that, this coupling effect system can change a CURRENT DISTRIBUTION of this system ground, and this CURRENT DISTRIBUTION can make this radiation pattern point to this top-direction.
6. handheld apparatus according to claim 1, is characterized in that, this radiation system operates in global positioning system (GlobalPositioningSystem, a GPS) frequency range.
7. the radiation pattern method of adjustment for a handheld apparatus, this handheld apparatus has a top-direction and a bottom direction, and comprises a radiant body, and this radiant body is configured in this handheld apparatus, and there is a radiation pattern, this radiation pattern method of adjustment comprises the following step:
A () arranges a guide way in this bottom direction suspension joint of this radiant body, this guide way can produce a coupling effect with this radiant body, this coupling effect increases a radio-frequency current on a system ground of this handheld apparatus to adjust this radiation pattern, points to this top-direction in order to do this radiation pattern;
Wherein, this guide way and this radiant body are at a distance of a gap, and this guide way has a length, and this length extends along with this top-direction toward the direction that this bottom direction is parallel.
8. radiation pattern method of adjustment according to claim 7, is characterized in that, this radiant body has more an input impedance, and this radiation pattern method of adjustment more comprises the following step:
B () changes the size in this gap to adjust this radiation pattern and this input impedance; And
C () changes this length to adjust this radiation pattern and this input impedance.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW100112702 | 2011-04-12 | ||
| TW100112702A TWI488364B (en) | 2011-04-12 | 2011-04-12 | Handheld device and radiation pattern adjustment method |
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| CN102738555A CN102738555A (en) | 2012-10-17 |
| CN102738555B true CN102738555B (en) | 2016-01-06 |
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| CN201110127205.2A Active CN102738555B (en) | 2011-04-12 | 2011-05-09 | Handheld device and radiation pattern adjusting method |
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| CN (1) | CN102738555B (en) |
| TW (1) | TWI488364B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9660329B2 (en) | 2012-10-18 | 2017-05-23 | Asustek Computer Inc. | Directional antenna |
| CN104143682B (en) * | 2013-05-10 | 2017-01-18 | 宏碁股份有限公司 | Wearable device |
| TWI563736B (en) * | 2015-07-20 | 2016-12-21 | Quanta Comp Inc | Mobile device |
| CN107453057A (en) * | 2017-07-31 | 2017-12-08 | 维沃移动通信有限公司 | A kind of beam direction adjustment circuit, electronic equipment and method |
| CN107707702A (en) * | 2017-11-15 | 2018-02-16 | 维沃移动通信有限公司 | A kind of mobile terminal |
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| CN1473375A (en) * | 2001-07-25 | 2004-02-04 | 松下电器产业株式会社 | Portable radio-use antenna |
| CN1867201A (en) * | 2005-05-31 | 2006-11-22 | 捷讯研究有限公司 | Mobile wireless communications device comprising a satellite positioning system antenna and electrically conductive director element therefor |
| CN201523067U (en) * | 2009-09-21 | 2010-07-07 | 佳邦科技股份有限公司 | Built-in antenna |
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| US6563467B1 (en) * | 2001-12-28 | 2003-05-13 | Motorola, Inc. | Efficient antenna pattern shaping structure and associated radio circuitry and antenna |
| JP2005210521A (en) * | 2004-01-23 | 2005-08-04 | Sony Corp | Antenna device |
| US7277058B2 (en) * | 2004-12-30 | 2007-10-02 | Motorola, Inc. | Wireless communication device antenna for improved communication with a satellite |
| US8504135B2 (en) * | 2008-10-27 | 2013-08-06 | Uti Limited Partnership | Traveling-wave antenna |
| US8421684B2 (en) * | 2009-10-01 | 2013-04-16 | Qualcomm Incorporated | Methods and apparatus for beam steering using steerable beam antennas with switched parasitic elements |
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- 2011-04-12 TW TW100112702A patent/TWI488364B/en active
- 2011-05-09 CN CN201110127205.2A patent/CN102738555B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1473375A (en) * | 2001-07-25 | 2004-02-04 | 松下电器产业株式会社 | Portable radio-use antenna |
| CN1867201A (en) * | 2005-05-31 | 2006-11-22 | 捷讯研究有限公司 | Mobile wireless communications device comprising a satellite positioning system antenna and electrically conductive director element therefor |
| CN201523067U (en) * | 2009-09-21 | 2010-07-07 | 佳邦科技股份有限公司 | Built-in antenna |
Also Published As
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| TW201242167A (en) | 2012-10-16 |
| CN102738555A (en) | 2012-10-17 |
| TWI488364B (en) | 2015-06-11 |
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