EP2141770A1 - Dispositif d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne - Google Patents
Dispositif d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne Download PDFInfo
- Publication number
- EP2141770A1 EP2141770A1 EP08159354A EP08159354A EP2141770A1 EP 2141770 A1 EP2141770 A1 EP 2141770A1 EP 08159354 A EP08159354 A EP 08159354A EP 08159354 A EP08159354 A EP 08159354A EP 2141770 A1 EP2141770 A1 EP 2141770A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- frequencies
- antenna device
- radiating element
- dvb
- radio communication
- 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- Withdrawn
Links
Images
Classifications
-
- 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
- H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
- H01Q9/42—Resonant antennas with feed to end of elongated active element, e.g. unipole with folded element, the folded parts being spaced apart a small fraction of the operating wavelength
-
- 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
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/321—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors within a radiating element or between connected radiating elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/314—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors
- H01Q5/328—Individual or coupled radiating elements, each element being fed in an unspecified way using frequency dependent circuits or components, e.g. trap circuits or capacitors between a radiating element and ground
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
- H01Q5/30—Arrangements for providing operation on different wavebands
- H01Q5/307—Individual or coupled radiating elements, each element being fed in an unspecified way
- H01Q5/342—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes
- H01Q5/35—Individual or coupled radiating elements, each element being fed in an unspecified way for different propagation modes using two or more simultaneously fed points
Definitions
- the present invention relates generally to antenna devices and more particularly to an antenna device for use in a portable radio communication device, such as a mobile phone, which antenna device is adapted for receiving radio signals having a relatively low frequency, such as radio signals in the FM frequency band.
- a conventional FM antenna for portable radio communication devices is usually provided in the headset wire connected to the communication device.
- This configuration with a relatively long wire permits an antenna length that is sufficient also for low frequency applications.
- this solution is obviously not feasible.
- a known active FM rx antenna device for a mobile phone is illustrated in Fig. 1 .
- a FM receiver 1 is connected to one end of a half-loop radiating element 2, which radiating element is short-circuited in the other end to reduce the size of the antenna device.
- An object of the present invention is to provide an antenna device for use in a portable radio communication device, which efficiently utilizes available space of the portable radio communication device and provides for at least FM frequency band operation.
- the antenna device preferably comprises a switching arrangement at said first end and the filter device is arranged at the second end, wherein the switching arrangement is configured to switch between FM operation and DVB-H operation.
- the antenna device comprises a switching arrangement at the second end and the filter device is arranged at the first end, wherein the switching arrangement is configured to switch between operation at frequencies at least ten times higher than FM frequencies and DVB-H operation.
- the half-loop radiating element of the antenna device is preferably arranged over a ground plane device of a portable radio communication device, to provide a desired virtual loop.
- radiating element is used. It is to be understood that this term is intended to cover electrically conductive elements arranged for receiving and/or transmitting radio signals.
- the antenna device comprises a half-loop radiating element 2, having a first end and a second end, configured for receiving FM frequencies.
- a half-loop antenna is a virtual loop antenna, by being provided over a ground plane device.
- the antenna device further comprises a capacitor 4 at the first end for fine tuning or setting the half-loop radiating element 2 to e.g. either Japan or other country FM receiving frequencies and an inductor 5 at the second end to short-circuit the half-loop radiating element 2 for FM receiving frequencies.
- the antenna device is further configured to simultaneously with FM frequencies operate at DVB-H frequencies.
- the antenna device further comprises a filter device 6 at the first end of the half-loop radiating element 2, which filter device 6 is configured to block DVB-H frequencies.
- a FM receiver 1 connected to the first end of the half-loop radiating element 2 experiences a short-circuited half-loop antenna device configured for FM frequencies
- a DVB-H receiver 8 connected to the second end of the half-loop radiating element 2 experiences an open-ended half-loop antenna device configured for DVB-H frequencies.
- the capacitor 4 is configured fine tune the half-loop radiating element 2 for FM frequencies.
- a capacitance of about 30 pF is appropriate to fine tune the half-loop radiating element 2 for FM frequencies.
- the filter device 6 is configured to block DVB-H frequencies.
- the filter device is e.g. made up by a capacitor in parallel with an inductor.
- a capacitance of about 6 pF and an inductance of about 11 nH is appropriate to provide a block for DVB-H frequencies, at the same time allowing FM frequencies to pass through.
- a portable radio communication device 10 comprising an antenna device as described above comprises a ground plane device below the half-loop radiating element 2 to provide a virtual loop antenna device.
- the ground plane device is e.g. provided as a printed wiring board of the portable radio communication device 10.
- the portable radio communication device 10 is further provided with a matching network or matching filter for the FM receiver 1, and a matching network or matching filter for the DVB-H receiver 8.
- the matching network or matching filter for the FM receiver 1 is connected to the first end of the half-loop radiating element 2.
- the matching network or matching filter for the DVB-H receiver 8 is connected to the second end of the half-loop radiating element 2.
- the antenna device comprises a half-loop radiating element 2, having a first end and a second end, configured for receiving FM frequencies.
- the antenna device further comprises a capacitor 4 at the first end for fine tuning the half-loop radiating element 2 to FM receiving frequencies and an inductor 5 at the second end to short-circuit the half-loop radiating element 2 for FM receiving frequencies.
- the antenna device is further configured to operate at DVB-H frequencies and at frequencies at least ten times higher than FM frequencies, such as at least one of GPS, Bluetooth, WLAN and WCDMA diversity.
- the antenna device is arranged to operate with FM frequencies, DVB-H frequencies and Bluetooth frequencies, which all provide much desired functions.
- the capacitor 4 is configured to also short circuit the half-loop radiating element 2 to ground for frequencies at least ten times higher than FM frequencies.
- a capacitance of about 30 pF is appropriate to provide a short circuit for frequencies at least ten times higher than FM frequencies and to simultaneously tune the half-loop radiating element 2 for FM frequencies.
- the inductor 5 is configured to short circuit the half-loop radiating element 2 to ground for FM frequencies.
- An inductance of about 5 nH is appropriate to provide a short circuit for FM frequencies, at the same time preventing short circuit for frequencies at least ten times higher than FM frequencies.
- the inductor 5 is further preferably used for tuning of the half-loop radiating element 2 for frequencies at least ten times higher than FM frequencies.
- the filter device 6 is configured to block DVB-H frequencies.
- the filter device is e.g. made up by a capacitor in parallel with an inductor.
- a capacitance of about 6 pF and an inductance of about 11 nH is appropriate to provide a block for DVB-H frequencies, at the same time allowing FM frequencies as well as frequencies at least ten times FM frequencies to pass through.
- the antenna device further comprises a filter device 6 at the second end of the half-loop radiating element 2, which filter device 6 is configured to block only DVB-H frequencies.
- the antenna device also comprises a switching arrangement 7 at the first end, wherein the switching arrangement is configured to switch between FM operation and DVB-H operation.
- a FM receiver 1 switchable to the first end of the half-loop radiating element 2 experiences a short-circuited half-loop antenna device configured for FM frequencies
- a DVB-H receiver 8 switchable to the first end of the half-loop radiating element 2 experiences an open-ended half-loop antenna device configured for DVB-H frequencies
- a BT transceiver 3 connected to the second end experiences a short-circuited half-loop antenna device configured for BT frequencies.
- Tuning of the DVB-H receiver 8 is e.g. performed by a tuning device connected thereto, which tuning device has tuning properties corresponding to that of a Peregrine DTC device, modified with a lower cap.
- a portable radio communication device 10 comprising an antenna device as described above comprises a ground plane device below the half-loop radiating element 2 to provide a virtual loop antenna.
- the ground plane device is e.g. provided as a printed wiring board of the portable radio communication device.
- the portable radio communication device 10 is further provided with a matching network or matching filter for a FM receiver 1, a matching network or matching filter for e.g. a Bluetooth transceiver 3, and a matching network or matching filter for a DVB-H receiver 8.
- the matching network or matching filter for the FM receiver 1 is connected to the first end of the half-loop radiating element 2 via the switching arrangement 7.
- the matching network or matching filter for the Bluetooth transceiver 3 is connected to the second end of the half-loop radiating element 2.
- the matching network or matching filter for the DVB-H receiver 8 is connected to the first end of the half-loop radiating element 2 via the switching arrangement 7.
- a third embodiment of an antenna device according to the present invention is schematically shown in Figs. 5 and 6 .
- This third embodiment of the antenna device is identical with the second embodiment of the antenna device described above apart from the following.
- the antenna device may further be adapted for also transmitting radio signals for FM frequencies.
- the portable radio communication device comprises in such a case comprises a FM transmitter switchable to the first end of the half-loop radiating element 2.
- the matching networks or matching filters for the FM transmitter and FM receiver are preferably a common matching network or matching filter for the FM receiver and the FM transmitter. Since the FM receiver and FM transmitter will not operate simultaneously, a switching arrangement is needed at the first end of the half-loop radiating element, which advantageously in the embodiment of Fig. 4 is a three state switch, since FM and DVB-H will not operate simultaneously in this embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Transceivers (AREA)
- Support Of Aerials (AREA)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08159354A EP2141770A1 (fr) | 2008-06-30 | 2008-06-30 | Dispositif d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne |
PCT/SE2009/050825 WO2010002342A1 (fr) | 2008-06-30 | 2009-06-29 | Antenne et dispositif de radiocommunication portatif comportant une telle antenne |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08159354A EP2141770A1 (fr) | 2008-06-30 | 2008-06-30 | Dispositif d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2141770A1 true EP2141770A1 (fr) | 2010-01-06 |
Family
ID=40032654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08159354A Withdrawn EP2141770A1 (fr) | 2008-06-30 | 2008-06-30 | Dispositif d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2141770A1 (fr) |
WO (1) | WO2010002342A1 (fr) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011131247A1 (fr) * | 2010-04-23 | 2011-10-27 | Laird Technologies Ab | Dispositif d'antenne et dispositif électronique portatif comprenant un tel dispositif d'antenne |
GB2501487A (en) * | 2012-04-24 | 2013-10-30 | Renesas Mobile Corp | Multiple frequency antenna involving filter and impedance matching arrangements |
US9781496B2 (en) | 2012-10-25 | 2017-10-03 | Milwaukee Electric Tool Corporation | Worksite audio device with wireless interface |
US10476284B2 (en) | 2011-12-30 | 2019-11-12 | Makita Corporation | Battery system for a power tool, as well as battery holder therefor, charger, and charging system |
WO2019243499A1 (fr) * | 2018-06-20 | 2019-12-26 | Advanced Pcb Antennas Sweden Ab | Antenne multibande et multiport |
EP2940787B1 (fr) * | 2012-12-21 | 2020-06-17 | Murata Manufacturing Co., Ltd. | Dispositif d'antenne et appareil électronique |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2361584A (en) * | 2000-04-19 | 2001-10-24 | Motorola Israel Ltd | Multi-band antenna and switch system |
WO2002049151A1 (fr) * | 2000-12-16 | 2002-06-20 | Koninklijke Philips Electronics N.V. | Ensemble d'antenne |
EP1335449A1 (fr) * | 2000-10-31 | 2003-08-13 | Mitsubishi Denki Kabushiki Kaisha | Dispositif d'antenne et machine portable |
US20080018541A1 (en) * | 2006-07-24 | 2008-01-24 | Nokia Corporation | Cover antennas |
US20080111748A1 (en) * | 2006-11-10 | 2008-05-15 | Dunn Doug L | Antenna system having plural selectable antenna feed points and method of operation thereof |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4814776A (en) * | 1987-09-10 | 1989-03-21 | Motorola, Inc. | Optimally grounded small loop antenna |
US5113196A (en) * | 1989-01-13 | 1992-05-12 | Motorola, Inc. | Loop antenna with transmission line feed |
KR100263181B1 (ko) * | 1998-02-27 | 2000-08-01 | 윤종용 | 휴대용 무선 단말기 안테나 |
-
2008
- 2008-06-30 EP EP08159354A patent/EP2141770A1/fr not_active Withdrawn
-
2009
- 2009-06-29 WO PCT/SE2009/050825 patent/WO2010002342A1/fr active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2361584A (en) * | 2000-04-19 | 2001-10-24 | Motorola Israel Ltd | Multi-band antenna and switch system |
EP1335449A1 (fr) * | 2000-10-31 | 2003-08-13 | Mitsubishi Denki Kabushiki Kaisha | Dispositif d'antenne et machine portable |
WO2002049151A1 (fr) * | 2000-12-16 | 2002-06-20 | Koninklijke Philips Electronics N.V. | Ensemble d'antenne |
US20080018541A1 (en) * | 2006-07-24 | 2008-01-24 | Nokia Corporation | Cover antennas |
US20080111748A1 (en) * | 2006-11-10 | 2008-05-15 | Dunn Doug L | Antenna system having plural selectable antenna feed points and method of operation thereof |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2011131247A1 (fr) * | 2010-04-23 | 2011-10-27 | Laird Technologies Ab | Dispositif d'antenne et dispositif électronique portatif comprenant un tel dispositif d'antenne |
US10476284B2 (en) | 2011-12-30 | 2019-11-12 | Makita Corporation | Battery system for a power tool, as well as battery holder therefor, charger, and charging system |
GB2501487A (en) * | 2012-04-24 | 2013-10-30 | Renesas Mobile Corp | Multiple frequency antenna involving filter and impedance matching arrangements |
US9781496B2 (en) | 2012-10-25 | 2017-10-03 | Milwaukee Electric Tool Corporation | Worksite audio device with wireless interface |
EP2940787B1 (fr) * | 2012-12-21 | 2020-06-17 | Murata Manufacturing Co., Ltd. | Dispositif d'antenne et appareil électronique |
WO2019243499A1 (fr) * | 2018-06-20 | 2019-12-26 | Advanced Pcb Antennas Sweden Ab | Antenne multibande et multiport |
SE544778C2 (en) * | 2018-06-20 | 2022-11-15 | Advanced Pcb Antennas Sweden Ab | A multiband and multiport antenna |
Also Published As
Publication number | Publication date |
---|---|
WO2010002342A1 (fr) | 2010-01-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US8330665B2 (en) | Antenna device and portable radio communication device comprising such antenna device | |
US8421703B2 (en) | Apparatus for enabling two elements to share a common feed | |
JP4302738B2 (ja) | 無線端末における、またはそれに関する改良 | |
US8942761B2 (en) | Two port antennas with separate antenna branches including respective filters | |
EP2219265A1 (fr) | Dispositif d'antenne, système d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne | |
EP2182577A1 (fr) | Dispositif d'antenne, système d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne | |
EP2337150B1 (fr) | Agencement d'antenne et dispositif de communication radio portable comportant un tel agencement d'antenne | |
EP1962375A1 (fr) | Antenne multibande pour dispositif portable de communications radio | |
EP2141770A1 (fr) | Dispositif d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne | |
US7884685B2 (en) | Band switching by diplexer component tuning | |
EP2234205A1 (fr) | Dispositif d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne | |
US10461431B2 (en) | Electrically tunable miniature antenna | |
WO2011026522A1 (fr) | Dispositif d'antenne et dispositif portable de radiocommunication comprenant un tel dispositif d'antenne | |
EP2209160B1 (fr) | Dispositif d'antenne, système d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne | |
EP2221914A1 (fr) | Antenne, système d'antenne et dispositif de communication radio portable comportant un tel système d'antenne | |
EP2113965A1 (fr) | Antenne multibande à double alimentation et dispositif de communication radio portable comportant une telle antenne | |
EP2166614A1 (fr) | Dispositif d'antenne et dispositif de communication radio portable comportant un tel dispositif d'antenne | |
CN102656744A (zh) | 天线构造及其便携式无线电通信设备 | |
WO2011110216A1 (fr) | Dispositif d'antenne adapté pour la réception simultanée d'une première bande de fréquence et d'une seconde bande de fréquence |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR |
|
AX | Request for extension of the european patent |
Extension state: AL BA MK RS |
|
17P | Request for examination filed |
Effective date: 20100608 |
|
17Q | First examination report despatched |
Effective date: 20100705 |
|
AKX | Designation fees paid |
Designated state(s): DE FR GB |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20120223 |