EP1209758A1 - Antenne für mobiles Kommunikationsgerät und mit dieser Antenne ausgerüstetes Gerät - Google Patents
Antenne für mobiles Kommunikationsgerät und mit dieser Antenne ausgerüstetes Gerät Download PDFInfo
- Publication number
- EP1209758A1 EP1209758A1 EP00610121A EP00610121A EP1209758A1 EP 1209758 A1 EP1209758 A1 EP 1209758A1 EP 00610121 A EP00610121 A EP 00610121A EP 00610121 A EP00610121 A EP 00610121A EP 1209758 A1 EP1209758 A1 EP 1209758A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- antenna
- mobile communications
- communications device
- transducer
- substantially rigid
- 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- Withdrawn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
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/08—Means for collapsing antennas or parts thereof
- H01Q1/085—Flexible aerials; Whip aerials with a resilient base
-
- 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
Definitions
- the invention relates to radio frequency antennas used in portable communications devices such as mobile telephones.
- Mobile telephones exist, which have a projecting antenna that is flexible, whereby the antenna is more robust and can better withstand rough handling without breaking or being otherwise damaged.
- Today's mobile telephones are assembled from a large number of individual components including in particular an antenna with antenna connectors, and microphone and speaker or receiver transducer. These transducers are important components, which convert sound signals to corresponding electric signals or vice versa. These transducers require a well-defined acoustic environment in order to operate in accordance with the specifications for the transducers and for the telephone. For such and other reasons, the transducers are most often sealed against a housing wall of the telephone, eg by means of glue or a gasket ring of double-sided adhesive tape. Such adhesive gasket rings require careful handling and can give problems in the assembly line. It is desirable to reduce the number of individual components to be handled when assembling the communications device.
- EP 702 478 discloses a telephone handset, in which a rubber keypad has an extension with a cavity for receiving a display of the telephone, and a further cavity for mounting a speaker or receiver transducer and providing an acoustic sealing of the transducer.
- This construction extends over substantially the entire length of the telephone handset, and it has the disadvantage of being inherently unstable, since rubber cannot easily be manufactured to tight tolerances over large dimensions such as the length of a telephone handset.
- the display is situated between the keypad and the transducer, and the relatively long and narrow rubber bands along the sides of the display are inherently unstable and provide no precise and stable mounting for the display.
- the invention provides an antenna with a flexible structure supporting the electrically conductive portion of the antenna, where the flexible structure includes a cavity or nest for receiving an electro-acoustic transducer in a substantially tight fit.
- Such an antenna is particularly suited for use in mobile telephones and other portable communications devices, where the speaker transducer is traditionally situated near the antenna.
- the antenna can advantageously have a substantially rigid portion secured to the antenna, where the substantially rigid portion has means for securing the antenna to another structure of the communications device, eg to a printed circuit board (PCB).
- the securing means are preferably an opening or a hole in the substantially rigid portion, where a screw can be received in the hole for securing the antenna to the PCB by screwing.
- Assembly of a communications device having an antenna of the invention is simplified due to a reduced number of individual parts to be assembled.
- the mounting of the transducer is simplified, since no adhesive is needed, and the transducer will be mounted in a tight fit in a cavity of the flexible or soft part, which is also part of the antenna.
- the tight fit provides an acoustic seal for the transducer, and no separate gasket is thus needed, since the flexible material adapts itself to the transducer and also acts as a shock absorber for the transducer.
- An advantage over the construction in the above-identified EP 702 478 is that, in a mobile telephone, the speaker or receiver transducer is most often situated near the antenna, ie at one and the same end of the telephone (the "upper" end), and the flexible material can therefore be made very compact without long elastic bands or straps interconnecting two otherwise separate and separated portions of the flexible material.
- the entire antenna can easily be secured or fixed to a printed circuit board (PCB) of the mobile telephone by means of one or more screws or rivets co-operating with the substantially rigid portion, or by means of an adhesive.
- the substantially rigid portion can have flexible tongues with snap ridges for snapping around eg the edges of the PCB or other suitable structure in the telephone, whereby the antenna can be mounted using a simple snap-on action.
- Figures 1 and 2 show an antenna 10 with an electrically conductive portion 11 electrically connected to a printed circuit board (PCB) 12 for use in a mobile telephone 50 shown in figure 3 or other mobile communications device.
- PCB printed circuit board
- the electrically conductive portion 11 of the antenna can have any configuration in one, two or three dimensions as required and one or more frequency ranges in which the telephone is intended to operate.
- the conductive portion can thus have one or more straight and curved portions and portions of spiral or meander configurations, or combinations thereof, according to the intended use of the telephone. Such configuration is in itself not a part of the invention.
- the electrically conductive portion 11 of the antenna will preferably be operable both as a receiving antenna and as a transmitting antenna of the telephone.
- a flexible sheet material, on which the conductive portion is materialised, preferably supports the electrically conductive portion 11 of the antenna.
- the conductive portion 11 of the antenna is embedded in a flexible material 13, such as rubber or soft plastics material, which thus completely encloses the conductive portion of the antenna.
- the flexible material 13 is preferably injection moulded and serves the purpose of protecting the conductive portion of the antenna against mechanical overload, and the flexible material has its physical dimensions and specific dielectric properties designed and selected for the proper functioning of the antenna.
- the antenna also has portions 14 of a substantially rigid material such as a plastics material firmly secured to the flexible material 13, preferably by injection moulding.
- the portions 14 of a substantially rigid material has recesses or openings 15 therein, and the composite structure of the conductive portion 11, the flexible material 13 and the substantially rigid material 14 is secured to the printed circuit board 12 by means of screws 16 co-operating with the portions 14 of a substantially rigid material.
- the antenna with its flexible and rigid portions may be secured by other means than screws as shown here.
- Such alternatives may include rivets, adhesive such as hot melt glue or pressure sensitive adhesive, or flexible tongues with snap ridges for co-operating with edges on the printed circuit board or a housing wall of the telephone in a simple snap-on action.
- the flexible material 13 has a nest or opening 17 therein.
- the opening 17 is shaped to receive an electro-acoustic transducer 18, preferably in a substantially tight fit.
- the printed circuit board 12 defines the bottom of the opening 17, and an opening 19 is provided in the printed circuit board.
- the opening 19 serves to give the transducer access to a volume of air on its rear side, which for some transducers is necessary for the proper functioning of the transducer.
- the opening 19 at the rear side of the transducer can be tuned to have any desired acoustic impedance. For uses where a volume of air on their rear side is not needed, the opening 19 can be omitted, whereby the nest or opening 17 can be a cavity closed at its bottom.
- Figure 3 shows a mobile telephone 50 incorporating the antenna of figures 1 and 2.
- a portion of the flexible material 13 with the electrically conductive portion 11 embedded therein protrudes from the telephone.
- the shown shape of the flexible material is merely optional, and any shape that is technically and aesthetically acceptable can be used.
- the electro-acoustic speaker transducer 18 is situated within the housing of the telephone behind sound outlet openings 51 in the housing wall of the telephone.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Telephone Set Structure (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00610121A EP1209758A1 (de) | 2000-11-28 | 2000-11-28 | Antenne für mobiles Kommunikationsgerät und mit dieser Antenne ausgerüstetes Gerät |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP00610121A EP1209758A1 (de) | 2000-11-28 | 2000-11-28 | Antenne für mobiles Kommunikationsgerät und mit dieser Antenne ausgerüstetes Gerät |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1209758A1 true EP1209758A1 (de) | 2002-05-29 |
Family
ID=8174426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00610121A Withdrawn EP1209758A1 (de) | 2000-11-28 | 2000-11-28 | Antenne für mobiles Kommunikationsgerät und mit dieser Antenne ausgerüstetes Gerät |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1209758A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8344955B2 (en) | 2010-01-08 | 2013-01-01 | Nokia Corporation | Integrated antenna with e-flex technology |
US8716603B2 (en) | 2010-11-24 | 2014-05-06 | Nokia Corporation | Printed wiring board with dielectric material sections having different dissipation factors |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5669988A (en) * | 1979-11-09 | 1981-06-11 | Nec Corp | Wireless earphone unit |
JPS5868324A (ja) * | 1981-10-19 | 1983-04-23 | Matsushita Electric Ind Co Ltd | 携帯用音響機器 |
US5197091A (en) * | 1989-11-20 | 1993-03-23 | Fujitsu Limited | Portable telephone having a pipe member which supports a microphone |
EP0829992A2 (de) * | 1996-09-12 | 1998-03-18 | Nokia Mobile Phones Ltd. | Telefonhandapparat |
WO2000038475A2 (en) * | 1998-12-21 | 2000-06-29 | Telital R & D Denmark A/S | A communication device |
-
2000
- 2000-11-28 EP EP00610121A patent/EP1209758A1/de not_active Withdrawn
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5669988A (en) * | 1979-11-09 | 1981-06-11 | Nec Corp | Wireless earphone unit |
JPS5868324A (ja) * | 1981-10-19 | 1983-04-23 | Matsushita Electric Ind Co Ltd | 携帯用音響機器 |
US5197091A (en) * | 1989-11-20 | 1993-03-23 | Fujitsu Limited | Portable telephone having a pipe member which supports a microphone |
EP0829992A2 (de) * | 1996-09-12 | 1998-03-18 | Nokia Mobile Phones Ltd. | Telefonhandapparat |
WO2000038475A2 (en) * | 1998-12-21 | 2000-06-29 | Telital R & D Denmark A/S | A communication device |
Non-Patent Citations (2)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 005, no. 133 (E - 071) 25 August 1981 (1981-08-25) * |
PATENT ABSTRACTS OF JAPAN vol. 007, no. 158 (E - 186) 12 July 1983 (1983-07-12) * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8344955B2 (en) | 2010-01-08 | 2013-01-01 | Nokia Corporation | Integrated antenna with e-flex technology |
US8716603B2 (en) | 2010-11-24 | 2014-05-06 | Nokia Corporation | Printed wiring board with dielectric material sections having different dissipation factors |
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Legal Events
Date | Code | Title | Description |
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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 |
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AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
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AX | Request for extension of the european patent |
Free format text: AL;LT;LV;MK;RO;SI |
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17P | Request for examination filed |
Effective date: 20021111 |
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AKX | Designation fees paid |
Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
|
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 |
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18D | Application deemed to be withdrawn |
Effective date: 20051122 |