EP2256859A1 - Antennenanordnung, Verfahren zum Anpassen einer Antennenanordnung und Vorrichtung mit Antennenanordnung - Google Patents

Antennenanordnung, Verfahren zum Anpassen einer Antennenanordnung und Vorrichtung mit Antennenanordnung Download PDF

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Publication number
EP2256859A1
EP2256859A1 EP09160029A EP09160029A EP2256859A1 EP 2256859 A1 EP2256859 A1 EP 2256859A1 EP 09160029 A EP09160029 A EP 09160029A EP 09160029 A EP09160029 A EP 09160029A EP 2256859 A1 EP2256859 A1 EP 2256859A1
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EP
European Patent Office
Prior art keywords
antenna
elements
ground
feeding
arrangement
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.)
Withdrawn
Application number
EP09160029A
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English (en)
French (fr)
Inventor
Anthony Kerselaers
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ST Ericsson SA
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ST Ericsson SA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ST Ericsson SA filed Critical ST Ericsson SA
Priority to EP09160029A priority Critical patent/EP2256859A1/de
Publication of EP2256859A1 publication Critical patent/EP2256859A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
    • H01Q5/40—Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
    • 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
    • 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0442—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular tuning means
    • 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
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means

Definitions

  • the present invention relates to an antenna arrangement which builds very small and consists of two antennas that operate at different frequencies and an associated apparatus including the same.
  • the present invention further relates to a method for tuning an antenna arrangement.
  • Bluetooth for short range communication
  • a receiver to access a satellite navigation system e.g. the global positioning system in order to be able to execute location dependent applications such as traffic routing and traffic guidance as well e.g. as providing up-to-date map information for hikers or mountain bikers.
  • an antenna assembly and radio communication apparatus employing the same is disclosed.
  • an antenna device including a first planar inverted F antenna (PIFA) operating at a first frequency and a second PIFA operating at a second frequency that is higher than the first frequency and disposed in a state in which it is insulated from the first PIFA.
  • the antenna device has an antenna element in which a first short circuit lead wire and a second short circuit lead wire are coupled to a ground terminal provided on a substrate, a first feeding lead wire is coupled to a first feeding terminal provided on a substrate via a first matching circuit, and a second lead wire is coupled to a feeding terminal provided on the substrate via a second matching circuit.
  • the radiator elements of both antennas are disposed on one spacer surface and the respective supply leads are disposed in close proximity to each other on one lateral side of a spacer spacing the radiating elements parallel to the associated ground plane.
  • this antenna device is to be able to match each radiating element independently from each other with a separate matching circuit in order to avoid unwanted side effects that appear, once one matching circuit is used to tune a combined antenna element.
  • an antenna arrangement having two antennas arranged with respect to a ground plane in a radiator plane, whereby each antenna is located in a first and a second antenna area on the radiator plane separated by a longitudinal gap and having a particular configuration of the first and second ground element with respect to the first and second feeding elements of the respective antennas.
  • a double antenna respectively a dual feed antenna is provided, which allows for capacitive coupling and at the same time for the construction of a configuration, where at one side of the two antennas close to the supply elements a low emission level zone is created and on the distant side thereof a high emission area is created.
  • the particular configuration of the ground elements with respect to the feeding elements provides for a good shielding of the respective feeding element against the respective other antenna without extra measures.
  • the radiator plane is arranged in parallel overlapping the ground plane, whereby a compact antenna structure can be built that allows for small devices incorporating the antenna arrangement.
  • the ground elements and the feeding elements are arranged in close proximity to each other and to the longitudinal gap and thus an optimum shielding of the respective feeding elements against respectively the other antenna will be achieved, whereas at the same time all of the connectors can be located closed to each other and thus be connected easily to a small integrated device incorporating for instance a Bluetooth and a GPS transmit /receive section.
  • a mounting position of feeding elements and ground elements is located at the border of the respective antenna area which allows for antennas having an area of low emission level close to the ground elements and at the same time having an area of high emission level far away from the ground elements.
  • a distance between a feeding port and a respective ground port can be dimensioned in such a manner, that it produces a certain input impedance which leads to minimum acceptable return losses for both antennas. Favourably this dimensioning functionality is available for both antennas independent of each other.
  • the radiator plane may be arranged at the small side of a rectangular shaped ground plane. This allows for instance to build mobile devices where the radiator plane is located next to the ear of a user and is not covered by the fingers, whereas at the same time the antenna does not interfere with the electronic circuitry that may be arranged on the ground plane.
  • a feeding structure is provided in the antenna arrangement, that includes at least two tuning elements between a feeding element and a respective ground element connecting them while they are arranged in running in a parallel manner.
  • tuning elements Preferably more such tuning elements can be provided depending on the needs and the required tuning range, as well as the available space.
  • a standardized component can be provided that may be used in a plurality of mobile devices.
  • This standardized structure can then be easily adapted to the current environment by adjusting the required impedance load successively in removing the tuning elements one by one by scratching them or using any other suitable e.g. mechanical or chemical means to remove them, for instance drilling in order to adapt the circuitry of the antenna to the current housing and printed circuit board.
  • the antenna arrangement comprises second tuning elements built in the area of a transmission line that effects the inductive loading of the respective antenna element, where at least two of those second tuning elements are provided and accordingly as required by the actual design and the housing more of those tuning elements may be provided depending on the available respectively required frequency range and space.
  • a flexible tuning structure is provided that allows adapting the frequency range of a standard antenna element to a current housing and circuitry of the mobile device it is built in.
  • An adaptation can be easily performed by adjusting the antenna in removing in a mechanical or chemical manner the respective tuning elements one by one until a desired predefined resonating frequency of the respective antenna element is achieved, in adjusting the inductive load affecting the antenna element.
  • the transmission line and the respective feeding and ground elements are arranged orthogonal to each other on a printed circuit board, because in this manner a design is provided that can be easily manufactured in a standard environment and is simple and cost-effective, while providing enough space to provide for a location of first and second tuning elements for two antennas at the same time.
  • the antenna arrangement provides the radiator plane and the feeding structure with a rectangular angle.
  • the frequency depending structure which is highly influencing the tuning of the antenna is provided orthogonal to the printed circuit board and orthogonal to the antenna element, and under the prerequisite that the antenna is placed during manufacturing and design in the area of an earpiece of a mobile phone for instance behind a display, the feeding structure by such an arrangement is placed near the upper edge of the mobile phone and thus will almost never be covered by the hand of a user, which ensures that during operation of the mobile phone for instance GPS and Bluetooth are always available because no detuning of the antenna can happen favoured by the special arrangement.
  • a tuning of an antenna arrangement can take place by first adjusting an impedance load of the antenna, in measuring the respective impedance load on an antenna element and subsequently removing a corresponding tuning element until a predefined impedance load is achieved and adjusted, and then in a second step adjusting the resonating frequency of the antenna in measuring the resonating frequency and removing associated second tuning elements to adjust a desired resonating frequency.
  • the method is preferably performed in this sequence, because the adjustment of the impedance load again shifts the resonating frequency by about 20 to 40 MHz.
  • Such a method provides for an easy adaptation of a standard antenna element that can be manufactured for a plurality of mobile devices such as organizers, personal digital assistants and mobile phones, and then after having being built into the device can be adjusted by removing the respective tuning elements to optimize the actual design solution.
  • the resonating frequency can be tuned respectively to a Bluetooth frequency and respectively to a GPS frequency for two antennas in this manner, which are applications that are widespread and used in many mobile devices with increasing demand for cheap and reliable solutions.
  • the antenna arrangement according to the present invention allows for very small building antennas respectively only occupying a volume of 10 x 32 x 6 mm.
  • Such very small antennas contrary to the expectations in present antenna physics surprisingly work fine.
  • planar inverted F antennas can be used which are known to be small building taking their respective operating frequency into account and are easy to manufacture with little material.
  • one such antenna at least is equipped with a notch element, which allows to further lower the resonance frequency of the respective antenna element.
  • a PIFA type antenna incorporates a radiating element that is folded back to form an open loop in order to allow an adaptation of the antenna to a lower resonance frequency.
  • antenna elements such as F antennas or loop antennas may be used, and thus the arrangement is very flexible in terms of adapting it to technologies in use.
  • an apparatus including the antenna arrangement of the present invention allows for versatile and small building devices, having for instance a combined functionality of Bluetooth communication and access to the global positioning system.
  • Fig. 1 shows a basic configuration of an embodiment of an antenna arrangement according to the present invention.
  • two antenna elements 201 and 202 can be identified in an arrangement 100.
  • Also identified at the drawing can be a first and a second feeding element 203 and 206 as well as a first and second ground element 204 and 205 associated respectively to the first and second antenna.
  • the two antennas 201 and 202 can also be described as a dual feed antenna.
  • the two antennas 201 and 202 are separated by a longitudinal gap or spacing G1.
  • the gap may be considered to be linear in a generally straight direction when considering the fact that it separates two more or less rectangular antenna areas that are occupied by the resonating elements of a respective antenna.
  • the gap serves the purpose to provide suitable galvanic insulation of the antenna elements against each other in a region where they are particularly close, while at the same time it allows for capacitive coupling of the two different antenna elements.
  • a linear gap is not necessarily to be understood as being symmetrical nor is it required to have constant width. Linear in this context only means a generally straight direction of extension of the gap in a very wide sense of interpretation.
  • a suitable configuration allows the two antennas to be capacitive coupled although they have no direct galvanic connection to each other.
  • the electrical field at the antenna is strongly attenuated at the edge of the respective opposite antenna element. This effect is achieved due to the presence of the grounding element of the opposite antenna element. Thereby the field strength is strongly attenuated at the respective feeding element, whereby a sufficient insulation between the two feeding elements 203 and 206 is achieved. In practice it is easy to achieve at least an insulation of 20 dB between the two feeding elements. This will be further demonstrated at the representation shown in Fig. 6 .
  • the particular arrangement of the feeding elements and the ground elements near the linear gap G1 leads to a low emission area CLA in the area of capacitive coupling of the combined antenna in proximity of the feeding and the ground elements, and contrary to that to a respective high emission area HEA of the respective antennas located at the antenna opposite to the feeding and the ground elements.
  • Such an antenna arrangement may for instance be used in combination with a combined IC which has the functionality of GPS and Bluetooth, and due to its property featuring the close proximity of the feeding and ground elements allows to be connected to a small integrated device having the combined functionality.
  • any type of suitable antenna may be used with the arrangement according to the present invention be it a planar inverted F antenna an F antenna or a loop antenna or any other suitable antenna.
  • Fig. 2 shows an example of an embodiment of an arrangement according to the present invention having a ground plane EP.
  • a ground plane EP In this case it may be particularly important to have a full conducting ground plane without any cut-ins in order to be able to equip it with as many components as possible in case this ground plane is used as a printed circuit board.
  • Two antennas can be easily identified in the drawing.
  • a first antenna PIFA1 and a second antenna PIFA2 embodied as planar inverted F antennas are located on a radiator plane AB. Both antennas are characterized by radiating elements that are located respectively in antenna area AR1 and antenna area AR2 which are separated by a longitudinal respectively linear gap G2.
  • the respective ground elements E1 and E2 of antenna 1 and antenna 2 as well as the respective feeding elements F1 and F2 to feed the respective antenna with electric energy may also easily be recognized in the representation.
  • radiator plane AB is shown to be overlapping the ground plane EP separated from it by a certain gap in a parallel configuration.
  • a respective antenna area AR1 here for instance preferably forms a volume of 10 x 32 x 6 mm together with the distance to the ground plane.
  • the radiating elements look similar in their design there is no restriction regarding the shape of each one and thus they can be totally different. These notches for instance help to lower the resonating frequency of the respective antennas, to adapt it to a longer transmit and receiving wavelength as required.
  • the distance between the first ground element E1 and the first feeding element F1 respectively the second ground element E2 and the second feeding element F2 can be used to fine-tune the antenna, in that the distance serves the dimensioning of the input impedance which can be dimensioned in such a manner, that return losses with regard to both antennas PIFA1 and PIFA2 are minimized.
  • the antenna arrangement according to the present invention is also suitable to form the basis for a plug in antenna to additionally connect en external antenna to it. For that purpose it would then only require an additional plug in socket.
  • Fig. 3 shows a simulated return loss and isolation of the antenna arrangement of Fig. 2 .
  • the simulated return loss and isolation are shown in [dB].
  • Usual frequencies for the operation of global positioning systems are in the range of 1.575,42 MHz which corresponds to a wavelength of 19,05 cm and in the range of 1.227,6 MHz which corresponds to a wavelength of 24,45 cm. Contrary to that common Bluetooth operating frequencies are between 2.400 and 2.483,5 MHz in Europe which corresponds to a wavelength of 12,5 cm.
  • the antenna PIFA1 with the shorter radiator element R1 is suitable for Bluetooth transmission and reception whereas the antenna PIFA2 of Fig. 2 with its radiating element R2 being longer than R1 is capable of receiving global positioning signals.
  • Bluetooth and GPS only serve as examples here and any other frequency combination apart from the ones suitable for reception and transmission of Bluetooth respectively reception of GPS signals are conceivable and feasible.
  • the insulation between Bluetooth and GPS antennas amounts to more than 30 dB at Bluetooth frequencies, contrary to 10 dB in most existing solutions. Consequently the arrangement according to the present embodiment of the present invention provides a solution where less or even no extra filtering is required in order to meet co-existence requirements between an Bluetooth transmitter and a GPS receiver, which leads to cheaper devices and to reduced manufacturing costs and placement efforts in the manufacturing of associated devices using the antenna arrangement.
  • Fig. 3 that by selecting the appropriate distance between the feeding elements and the ground elements a good return loss behaviour can be achieved for the frequency bands of interest.
  • Fig. 4 shows another example of an antenna arrangement according to the present invention.
  • a ground plane BD4 is shown and a radiator plane AB4 which is located next to the ground plane BD4.
  • Associated to a second antenna are a feeding element F42 and a ground element E42 as well as a radiator element R42, whereas associated to a first antenna are a feeding element F41 and a ground element E41 as well as a radiator element R41.
  • the linear gap G4 between the areas occupied by the two antennas.
  • radiator elements R41 and R42 of the respective first and second antenna are folded back, in order to further lower the resonance frequency of the respective antenna.
  • This allows for instance an antenna to be built within the area of 8 x 32 mm on FR4 material.
  • a mobile device for example a mobile phone, it is preferable to place the area of the radiator plane AB4 next to the ear of a user in order to prevent the user from covering the antenna with his fingers, also assuming that an appropriate dimensioning of the ground plane is chosen.
  • Fig. 5 shows an example of a measured return loss and insulation [dB] on a practical sample of an embodiment of an antenna arrangement for instance in a configuration as shown in Fig. 2 with two PIFA elements whereas the dimensions of the antenna were 10 x 32 mm on FA4 material in a distance of 6 mm above the ground plane.
  • the return loss of the GPS feed is identified by RLGPS5 whereas the return loss of the Bluetooth feed is identified by RLBT5.
  • the lower curve shows the insulation between the two feeds marked by ISBDF5.
  • the insulation between the Bluetooth and GPS section in this example amounts to more than 22 dB. It can also be seen in the same drawing that a good behaviour of the return loss can be achieved, in a case of an example where a Bluetooth and a GPS antenna are integrated. In comparison to presently available antenna technology the antenna arrangement according to the present invention features a 3 dB better sensitivity.
  • Fig. 6 shows the insulation capability of the arrangement according to an embodiment of the present invention as shown in Fig. 2 .
  • a Bluetooth antenna is shown having a feeding element F61 and a ground element E61
  • a GPS antenna has a feeding element F62 and a ground element E62.
  • a radiator plane AB may be implemented as a printed circuit board, which incorporates a first antenna area, which here is presented to be smaller and thus suits due to the higher resonating frequency the space requirements of a Bluetooth antenna in the antenna area AR1 as well as a second antenna area AR2, which is larger than the antenna area AR1 and thus suits the implementation and space requirements of a GPS antenna, which has a lower resonating frequency and thus requires longer resonating structures.
  • radiator plane BEXT Furthermore an extension of the radiator plane BEXT is demonstrated, which may be introduced in a supporting hole for instance in the feeding structure which will be demonstrated later.
  • the extension of the antenna board or a radiator plane AB shows three soldering contacts SA1, SA3 and SA2 in order to connect the feeding elements and the ground elements of the antenna to the printed circuit board respectively to the feeding structure and to the ground plane optionally containing circuitry of a mobile device.
  • Fig. 8 gives an example of a feeding structure TB or tuning board according to a further development of an embodiment of the present invention.
  • two feeding lines F81 and F82 of respectively first and second antenna elements are demonstrated that are associated to two ground elements E81 and E82 respectively. It is fairly easy to recognize that respectively feeding element F81 and F82 as well as ground elements E81 and E82 arranged running parallel to each other.
  • first tuning elements ITB11, ITB12 and ITB13 as well as ITB21, ITB22 and ITB23 respectively associated to a feeding structure of the first and second antenna.
  • the first tuning elements serve for instance the tuning of a Bluetooth antenna
  • the second tuning elements serve the tuning of a GPS antenna.
  • Tuning is preferably required, because the resonance frequency of the antenna is decreased by for instance the substrate material of the printed circuit board. FR4 as material for instance in this case, due to the mutual coupling between the antennas influences the resonating frequency.
  • the plastic material of a wireless terminal in which the antenna may be integrated, introduces a loading effect on the antenna, which has a consequence to further decrease the resonating frequency.
  • An adaptation of the impedance load effected on the respective antennas can be achieved by removing the respective first tuning elements one by one until the prescribed and desired impedance load is adjusted.
  • second tuning elements FTB11, FTB12 and FTB13 for instance for a Bluetooth antenna feeding structure are provided as well as second tuning elements FTB21, FTB22 and FTB23 for GPS antenna feeding structure are provided.
  • Fig. 8 prominently demonstrates a transmission line having an upper part TRU1 and lower part TRL1 in the area of a feeding structure for a first or Bluetooth antenna and an upper part TRU2 and a lower part TRL2 in the area of a feeding structure of a second antenna respectively a GPS antenna.
  • short circuiting second tuning elements are arranged, as mentioned above.
  • Fig. 9 shows an assembly of a resonating plane or antenna board AB, which contains the two antennas and a feeding structure TB that are connected at respective contact areas which are provided on the one hand on the antenna board SA1, SA3 and SA2 and on the feeding structure TB as STB1, STB3 and STB2.
  • the respective contact areas come into contact and only need to be soldered to provide a permanent connection.
  • Fig. 9 explicitly shows that the antenna board AB and the feeding structure TB form a rectangular angle ⁇ with each other. This is particular important, in a case, where the antenna arrangement is built into a mobile device and the radiator plane is parallel to the ground plane.
  • the feeding structure TB which highly influences the tuning of the antenna lies parallel to the upper housing edge of a housing of the mobile device, which is almost never covered by the hand of a user while the antennas need to be operated and thus during operation provide reliable conditions for Bluetooth and GPS reception and respectively transmission.
  • the transmission line and the ground element respectively feeding element are orthogonal to each other.
  • Fig. 10 shows an example of a diagram showing the input impedance of for instance a Bluetooth antenna in dependency of tuning elements that are removed.
  • the first tuning elements as demonstrated in Fig. 8 by reference numerals ITB11 to ITB13.
  • the real part of the impedance RPBT and the imaginary part of the impedance ITBT are shown in the drawing.
  • the number of removed tuning elements is listed, and on the rising axis the impedance in Ohm is listed. In this case it is easy to recognize, that the more tuning elements are removed, the higher the impedance RPBT is rising, while the imaginary part ITBT is decreasing.
  • the impedance load of the antenna respectively first antenna can be adjusted to a desired level.
  • this has the advantage that an adaptation can be performed by a trained worker or even an automated machine and does not have to be done by an RF engineer.
  • no additional design or redesign effort is required, as the standard design can be used and can be adapted according to the method of the present invention by measuring and removing the tuning elements.
  • Tuning will preferably always be required, because the placement on the printed circuit board and the housing of the mobile device as well as switches that are placed in various locations, by capacitive coupling reduce the resonating frequency of the antenna.
  • Fig. 10 has been measured in an actual phone design.
  • the impedance can be varied in the range of 30 Ohms.
  • the present antenna arrangement can also be conforming to other impedances than the standard 50 Ohm, and thus do not always require matching circuitry to adapt them to a given design.
  • Fig. 11 shows an example of a resonating frequency for a Bluetooth antenna RFBT where on the lower axis removed tuning elements are listed, and on the rising axis the frequency in MHz is listed.
  • the feeding structure according to the embodiment of the present invention allows for a wide range of adaptation of the frequency of the respective antenna.
  • Fig. 12 shows in correspondence to Fig. 10 the input impedance in dependency of removed tuning elements of a second antenna respectively a GPS antenna.
  • the real part of the input impedance is shown as RPGP and the imaginary part as IPGP; both are shown in a curve.
  • RPGP real part of the input impedance
  • IPGP imaginary part of IPGP
  • the removed tuning elements are listed and on the rising axis the impedance in Ohms is listed.
  • Fig. 13 shows the resonance frequency in dependence of removed tuning elements of a GPS antenna respectively second antenna RFGP.
  • These tuning elements are for instance marked by reference numerals FTB21 to FTB23 in Fig. 8 .
  • the resonating frequency which is listed in MHz on the rising axis can be varied by removing 20 tuning elements which are listed on the horizontal axis in a range from 1650 to almost 1300 MHz.
  • a wide range for adaptation of the antenna resonating frequency to environmental effects is possible which allows a precise tuning of a standard antenna element, respectively an antenna arrangement according to the present invention which contains two antennas resonating at a respective different frequency to desired values.
  • Fig. 14 shows an example giving detailed dimensions of an antenna board, respectively radiator plane AB according to an embodiment of the present invention which has also been shown in Fig. 7 .
  • antenna areas AR1 and AR2 are shown allowing respectively space for a Bluetooth antenna for instance and a GPS antenna.
  • contact areas suitable for soldering are shown identified by reference signs SA1 to SA3. From the numbers given in Fig. 14 it can be seen, that very small building antenna arrangements can be provided by the present invention and that the adaptation of the impedance and the inductive loading allows it to use smaller resonating elements that would be normally required in order to resonate in the range of the Bluetooth frequency respectively the GPS frequency for the respective antennas.
  • Fig. 15 gives an example of dimensions for a feeding structure or tuning board TB according to an embodiment of the present invention, which is also shown in Fig. 8 .
  • an upper part of the transmission line TRU1 opposite TRU2 and a lower part of the transmission line TRL1 opposite TRL2 is shown at the feeding structure TB as well as contact area STB1 to STB3 and feeding elements F81 as well as F82 associated to ground elements E81 and E82 are depicted.
  • the respective antenna board AB or feeding board respectively feeding structure TB can be built by an FR4 4 layer printed circuit board having a thickness of 1 mm and a copper layer in the thickness of 0.018 mm.
  • the associated dielectric constant may be typically 4.4 at 1 GHz.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
EP09160029A 2009-05-12 2009-05-12 Antennenanordnung, Verfahren zum Anpassen einer Antennenanordnung und Vorrichtung mit Antennenanordnung Withdrawn EP2256859A1 (de)

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CN104037501A (zh) * 2013-03-07 2014-09-10 宏达国际电子股份有限公司 移动装置
US8928537B2 (en) 2011-03-03 2015-01-06 Nxp, B.V. Multiband antenna
US9007272B2 (en) 2012-07-19 2015-04-14 Tensorcom, Inc. Method and apparatus for the alignment of a 60 GHz endfire antenna
US9190719B2 (en) 2011-03-03 2015-11-17 Nxp B.V. Multiband antenna
US9379430B2 (en) 2011-03-03 2016-06-28 Nxp B.V. Multiband antenna
CN107431886A (zh) * 2015-04-03 2017-12-01 高通股份有限公司 用于基于位置进行调谐的系统和方法
US10629993B2 (en) 2012-07-19 2020-04-21 HungYu David Yang Method and apparatus for a 60 GHz endfire antenna
CN112204814A (zh) * 2018-06-29 2021-01-08 谷歌有限责任公司 具有镀覆在高电容率壳体材料上的天线的可穿戴设备
CN112201951A (zh) * 2020-09-28 2021-01-08 上海摩勤智能技术有限公司 一种天线支架的多天线布局结构及移动终端
CN113300095A (zh) * 2020-02-21 2021-08-24 启碁科技股份有限公司 天线结构
CN113540800A (zh) * 2020-04-13 2021-10-22 启碁科技股份有限公司 天线结构
CN113540789A (zh) * 2020-04-22 2021-10-22 华为技术有限公司 天线系统及电子设备

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US9190719B2 (en) 2011-03-03 2015-11-17 Nxp B.V. Multiband antenna
US9379430B2 (en) 2011-03-03 2016-06-28 Nxp B.V. Multiband antenna
US10629993B2 (en) 2012-07-19 2020-04-21 HungYu David Yang Method and apparatus for a 60 GHz endfire antenna
US9007272B2 (en) 2012-07-19 2015-04-14 Tensorcom, Inc. Method and apparatus for the alignment of a 60 GHz endfire antenna
US9478873B2 (en) 2012-07-19 2016-10-25 Tensorcom, Inc. Method and apparatus for the alignment of a 60 GHz endfire antenna
WO2014015006A1 (en) * 2012-07-19 2014-01-23 Tensorcom, Inc. Method and apparatus for a 60 ghz endfire antenna
CN103633437A (zh) * 2012-08-28 2014-03-12 鸿富锦精密工业（深圳）有限公司 宽频天线组件
CN103633437B (zh) * 2012-08-28 2018-03-20 鸿富锦精密工业（深圳）有限公司 宽频天线组件
CN104037501A (zh) * 2013-03-07 2014-09-10 宏达国际电子股份有限公司 移动装置
CN107431886A (zh) * 2015-04-03 2017-12-01 高通股份有限公司 用于基于位置进行调谐的系统和方法
CN107431886B (zh) * 2015-04-03 2018-07-03 高通股份有限公司 用于基于位置进行调谐的系统和方法
CN112204814A (zh) * 2018-06-29 2021-01-08 谷歌有限责任公司 具有镀覆在高电容率壳体材料上的天线的可穿戴设备
CN113300095A (zh) * 2020-02-21 2021-08-24 启碁科技股份有限公司 天线结构
CN113300095B (zh) * 2020-02-21 2024-01-30 启碁科技股份有限公司 天线结构
CN113540800A (zh) * 2020-04-13 2021-10-22 启碁科技股份有限公司 天线结构
CN113540789A (zh) * 2020-04-22 2021-10-22 华为技术有限公司 天线系统及电子设备
CN112201951A (zh) * 2020-09-28 2021-01-08 上海摩勤智能技术有限公司 一种天线支架的多天线布局结构及移动终端
CN112201951B (zh) * 2020-09-28 2023-03-10 上海摩勤智能技术有限公司 一种天线支架的多天线布局结构及移动终端

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