WO1995024746A1 - Hand-held transmitting and/or receiving apparatus - Google Patents
Hand-held transmitting and/or receiving apparatus Download PDFInfo
- Publication number
- WO1995024746A1 WO1995024746A1 PCT/EP1995/000813 EP9500813W WO9524746A1 WO 1995024746 A1 WO1995024746 A1 WO 1995024746A1 EP 9500813 W EP9500813 W EP 9500813W WO 9524746 A1 WO9524746 A1 WO 9524746A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- resonator element
- ground plane
- width
- antenna
- Prior art date
Links
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
- 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
Definitions
- the invention relates to a hand-held transmitting and/or receiving apparatus comprising an elongated housing, an electric circuit inside the housing, an earphone at one side and one end of the housing, an electrical ground plane at the other side of the housing opposite to the earphone, an antenna resonator element arranged approximately parallel to the ground plane and having a first free and a second end which is electrically connected by a ground connector to the ground plane and means for connecting the ground plane and the resonator element to the electrical circuit.
- the antenna is an inverted F- antenna.
- the antenna resonator element of this antenna is connected to the ground plane by a ground connector at the end of the housing where the earphone is positioned. There ⁇ fore the free end of the antenna points away from this end of the housing and extends to the middle of the housing where the hand of the user holds the apparatus. From this follows that the hand of the user not only influences the field of the antenna and the radiation pattern accordingly but also the resonance frequency, the impedance and the gain of the antenna. As a result of the mismatching standing waves on the feedline to the antenna appear resulting in a loss of high frequency power.
- a further disadvantage of this known antenna results from the fact that the centre of the head of the user is near to the maximum of the strength of the electrical field of the antenna. This results in additional losses of the radiation energy when the antenna is used as a transmitting antenna but results also in influences of the electrical field to the head of the user so loading the head with health risks.
- the object of the invention is to overcome the disad ⁇ vantages of the state of the art namely to avoid influences from the hand or head of a user of the hand-held transmit- ting and/or receiving apparatus on the antenna and vice versa.
- the basic idea of the invention is to turn the known antenna by 180° so that the free end of the antenna is pointing to the end of the housing where the earphone is positioned. Therefore the maximum of the electrical field of the antenna is as far away from the user as possible, especially from his hand and his head so that the mutual influence is minimum. This means a lower influence on the electrical parameters of the antenna, especially impedance, gain and effectivity. On the other side the risks on the health of the user are minimized.
- the ground plane extends over approximately the whole width of the elongated housing. This assists in achieving a radiation pattern having the maximum or maxima away from the head of the user.
- the resonator element has approximately the same width and radi ⁇ ation pattern.
- the ground con ⁇ nector extends over the whole width of the resonator element.
- an elongated feeder element is provided positioned at one side of the resonator element for coupling the feeder element to the resonant element, one end of the feeder element representing a feed ⁇ ing end coupled to the means for connecting the resonator element to the electric circuit.
- This improvement avoids a galvanic contact between the electric circuit and the res ⁇ onator element.
- the feeder element extends over approximately the whole length of the resonator element. By this an electromagnetic coupling is achieved.
- the feeding end of the feeder element can be positioned at the free end of the resonant element.
- a projec ⁇ tion is provided at the edge of the free end of the resona ⁇ tor element the projection having a smaller width than the resonator element.
- the resonant freqency of the resonator element can be tuned.
- the width of the projection is ten times or more less than the width of the resonator element. By this dimensioning of the projection a fine tuning of the resona ⁇ tor element is possible.
- the res ⁇ onator element and the ground plane are in the form of an electrically conducting layer or coating on a dielectric substrat.
- the dielectric substrat is the housing or a part of the housing. More preferrably the dielectric substrat is a separate unit connected to or positioned inside the housing made from non- conducting material.
- the ground connector may comprise one single ground connector element extending over the whole width of the resonator element or may comprise at least two ground connector elements distributed over the width of the resonator element.
- fig. 1 is an elevational view of one example of a hand-held transceiver for a wireless telephone
- fig. 2 is a view on the backside of the trans ⁇ DCver according to fig. 1.
- fig. 3 is a section III-III through fig. 2
- fig. is a view similar to fig. 3 showing a second example
- fig. 5 is a sectional view through a third example similar to the upper part of fig. 4
- fig- 6 is a perspective view of the antenna unit in fig. 5.
- Fig. 1 is a side view of a hand-held transceiver com ⁇ prising a housing 1, an earphone 2, a microphone 3 and an antenna 4 consisting of an resonator element 5, a ground plane 6 and a ground connector 7 connecting one end of the resonator element 5 to the ground plane 6.
- the resonator element 5, the ground connector 7 and the ground plane 6 are in the form of a metallic sheet.
- the ground plane 6 is connected to the backside of the housing 1.
- the width of the ground plane 6 is the same as the width of the housing 1, and the width of the resonator element 5 also has almost the same width as the housing 1.
- the means for feeding the resonator element 5 and for connecting it and the ground plane 6 to the circuit inside the housing 1, namely a transmitter and a receiver, are not shown and may have any form known in the state of the art.
- a coax-cable can be connected to the ground plane the core of the cable being connected to the resonant element 5 at a distance away from the ground connector 7.
- Fig. 1 shows another example in cross section almost similar to a section III-III through fig. 2.
- Ground plane 6 and resonator element 5 are in the form of conducting layers on the wall of the housing 1 which wall is made from a dielectric material. Since there is no air gap between the resonant element 5 and the ground plane 6 on the one hand and the dielectric material of the wall of the housing 1 on the other hand the electric parameters of the antenna are highly independent from mechanical forces on the antenna 5 and/or the groundplane 6.
- Fig. 4 shows an example in a form similar to fig. 3.
- the antenna element 5, the ground plane 6 and the ground con ⁇ nector 7 are conducting layers on a separate dielectric substrate 8 altogether forming an independent unit which is fixed to the inner wall of the housing 1. This avoids a slit through the wall of the housing 1 for the ground connector 7 connecting the foot of the resonator element 5 to the ground plane 6. Since all electric elements of the antenna in this example are inside the housing 1 it is easier to connect the electric elements of the antenna to the electric circuit inside the housing 1.
- Fig. 5 shows in more details a sectional view through the upper part of a hand-held apparatus with an antenna arrangement similar to that of fig. 4.
- an antenna unit 11 Inside a wall 9 of a housing 10 most of which is broken away an antenna unit 11 is positioned consisting of a dielectric body 12 on which in form of electric layers an antenna resonator element 13, a ground connector 14 and a ground plane 15 are fixed.
- the ground plane 15 has protrusions 16 and 17 contacting a con- ducting elastic layer 18 on a circuit board 19 carrying the electrical leads and elements not shown in known manner.
- the dielectric body 12 has a recess 20 so providing a cavity 21 into which circuit elements on the circuit board 19 may extend which are so well-screened by the electric layer of the ground plane 15.
- Fig. 6 shows the unit comprising the dielectric body 12, the resonant element 13, the ground connector 14 and the ground plane 15 in perspective view. It can be seen that from an edge 22 of the free end of the resonant element 13 a projection 23 extends the width of which is much smaller than the width of the resonant element 13. The projection 23 can be shortened for tuning purposes.
- a feeder element 24 is fixed on the surface of the dielectric body 12, said feeder element 24 extending approximately over the whole length of the resona ⁇ tor element 13.
- the free end of the feeder element 24 is near the ground connector 14 while another end 25 of the feeder element 24 extends to that side of the dielectric body 12 where the ground plane 15 is located. Therefore the feeder element 24 can be connected to the electric leads of the circuit board 19 by a small conducting and elastic layer just in the same manner as the ground plane 15 is connected to the circuit board 19 by the layer 17.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
- Waveguide Aerials (AREA)
- Transceivers (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU95122130A RU2137266C1 (en) | 1994-03-08 | 1995-03-06 | Pocket-type transmitting and/or receiving device |
EP95911297A EP0697139B1 (en) | 1994-03-08 | 1995-03-06 | Hand-held transmitting and/or receiving apparatus |
JP7523219A JPH08510622A (en) | 1994-03-08 | 1995-03-06 | Handy transmitter / receiver |
AU18929/95A AU693867B2 (en) | 1994-03-08 | 1995-03-06 | Hand-held transmitting and/or receiving apparatus |
DE69529192T DE69529192D1 (en) | 1994-03-08 | 1995-03-06 | PORTABLE TRANSMITTER AND / OR RECEIVER |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK0267/94 | 1994-03-08 | ||
DK26794 | 1994-03-08 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/915,308 Continuation US5952975A (en) | 1994-03-08 | 1997-08-19 | Hand-held transmitting and/or receiving apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995024746A1 true WO1995024746A1 (en) | 1995-09-14 |
Family
ID=8091616
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/000812 WO1995024745A1 (en) | 1994-03-08 | 1995-03-06 | Hand-held transmitting and/or receiving apparatus |
PCT/EP1995/000813 WO1995024746A1 (en) | 1994-03-08 | 1995-03-06 | Hand-held transmitting and/or receiving apparatus |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1995/000812 WO1995024745A1 (en) | 1994-03-08 | 1995-03-06 | Hand-held transmitting and/or receiving apparatus |
Country Status (8)
Country | Link |
---|---|
US (2) | US5886668A (en) |
EP (2) | EP0697138B1 (en) |
JP (2) | JPH08510621A (en) |
CN (2) | CN1079999C (en) |
AU (2) | AU693867B2 (en) |
DE (2) | DE69529496D1 (en) |
RU (1) | RU2137266C1 (en) |
WO (2) | WO1995024745A1 (en) |
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WO1999063616A1 (en) * | 1998-05-29 | 1999-12-09 | Ericsson, Inc. | Non-protruding dual-band antenna for communications device |
US6002367A (en) * | 1996-05-17 | 1999-12-14 | Allgon Ab | Planar antenna device |
GB2345195A (en) * | 1998-12-23 | 2000-06-28 | Nokia Mobile Phones Ltd | Dual band antenna for a handset |
WO2000038475A2 (en) * | 1998-12-21 | 2000-06-29 | Telital R & D Denmark A/S | A communication device |
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EP1020947A3 (en) * | 1998-12-22 | 2000-10-04 | Nokia Mobile Phones Ltd. | Method for manufacturing an antenna body for a phone and phone or handset having an internal antenna |
US6392605B2 (en) | 2000-02-02 | 2002-05-21 | Nokia Mobile Phones, Limited | Antenna for a handset |
US6542125B1 (en) | 1997-06-04 | 2003-04-01 | Robert Bosch Gmbh | Radio device with moveable antenna |
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US11264692B2 (en) | 2018-11-02 | 2022-03-01 | Yazaki Corporation | Antenna unit |
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US6157819A (en) * | 1996-05-14 | 2000-12-05 | Lk-Products Oy | Coupling element for realizing electromagnetic coupling and apparatus for coupling a radio telephone to an external antenna |
JP3114621B2 (en) * | 1996-06-19 | 2000-12-04 | 株式会社村田製作所 | Surface mount antenna and communication device using the same |
GB2325348A (en) * | 1997-05-14 | 1998-11-18 | Acer Peripherals Inc | Antenna for wireless telephone |
SE511501C2 (en) | 1997-07-09 | 1999-10-11 | Allgon Ab | Compact antenna device |
US6134421A (en) * | 1997-09-10 | 2000-10-17 | Qualcomm Incorporated | RF coupler for wireless telephone cradle |
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US6304222B1 (en) * | 1997-12-22 | 2001-10-16 | Nortel Networks Limited | Radio communications handset antenna arrangements |
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US5929813A (en) * | 1998-01-09 | 1999-07-27 | Nokia Mobile Phones Limited | Antenna for mobile communications device |
US6184833B1 (en) * | 1998-02-23 | 2001-02-06 | Qualcomm, Inc. | Dual strip antenna |
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-
1995
- 1995-03-06 AU AU18929/95A patent/AU693867B2/en not_active Ceased
- 1995-03-06 DE DE69529496T patent/DE69529496D1/en not_active Expired - Lifetime
- 1995-03-06 CN CN95190162A patent/CN1079999C/en not_active Expired - Fee Related
- 1995-03-06 WO PCT/EP1995/000812 patent/WO1995024745A1/en active IP Right Grant
- 1995-03-06 JP JP7523218A patent/JPH08510621A/en active Pending
- 1995-03-06 EP EP95911296A patent/EP0697138B1/en not_active Expired - Lifetime
- 1995-03-06 AU AU18928/95A patent/AU1892895A/en not_active Abandoned
- 1995-03-06 DE DE69529192T patent/DE69529192D1/en not_active Expired - Lifetime
- 1995-03-06 RU RU95122130A patent/RU2137266C1/en active
- 1995-03-06 CN CN95190161A patent/CN1094663C/en not_active Expired - Fee Related
- 1995-03-06 EP EP95911297A patent/EP0697139B1/en not_active Expired - Lifetime
- 1995-03-06 WO PCT/EP1995/000813 patent/WO1995024746A1/en active IP Right Grant
- 1995-03-06 JP JP7523219A patent/JPH08510622A/en active Pending
-
1997
- 1997-08-19 US US08/916,740 patent/US5886668A/en not_active Expired - Lifetime
- 1997-08-19 US US08/915,308 patent/US5952975A/en not_active Expired - Lifetime
Patent Citations (3)
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WO1990013152A1 (en) * | 1989-04-18 | 1990-11-01 | Novatel Communications Ltd. | Duplexing antenna for portable radio transceiver |
GB2238665A (en) * | 1989-11-27 | 1991-06-05 | Kokusai Denshin Denwa Co Ltd | Microstrip antenna |
WO1994024723A1 (en) * | 1993-04-19 | 1994-10-27 | Wireless Access, Inc. | A small, double ring microstrip antenna |
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US6002367A (en) * | 1996-05-17 | 1999-12-14 | Allgon Ab | Planar antenna device |
EP0818847A2 (en) * | 1996-07-10 | 1998-01-14 | Ascom Tech Ag | Antenna construction |
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US6542125B1 (en) | 1997-06-04 | 2003-04-01 | Robert Bosch Gmbh | Radio device with moveable antenna |
WO1999063616A1 (en) * | 1998-05-29 | 1999-12-09 | Ericsson, Inc. | Non-protruding dual-band antenna for communications device |
US6016126A (en) * | 1998-05-29 | 2000-01-18 | Ericsson Inc. | Non-protruding dual-band antenna for communications device |
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EP1018777A3 (en) * | 1998-12-22 | 2000-07-19 | Nokia Mobile Phones Ltd. | Dual band antenna for a hand portable telephone and a corresponding hand portable telephone |
EP1018777A2 (en) * | 1998-12-22 | 2000-07-12 | Nokia Mobile Phones Ltd. | Dual band antenna for a hand portable telephone and a corresponding hand portable telephone |
EP1020947A3 (en) * | 1998-12-22 | 2000-10-04 | Nokia Mobile Phones Ltd. | Method for manufacturing an antenna body for a phone and phone or handset having an internal antenna |
US6271794B1 (en) | 1998-12-22 | 2001-08-07 | Nokia Mobile Phones, Ltd. | Dual band antenna for a handset |
US6333716B1 (en) | 1998-12-22 | 2001-12-25 | Nokia Mobile Limited | Method for manufacturing an antenna body for a phone |
EP1020948A1 (en) * | 1998-12-22 | 2000-07-19 | Nokia Mobile Phones Ltd. | Dual band antenna for a hand portable telephone and a corresponding hand portable telephone |
GB2345195A (en) * | 1998-12-23 | 2000-06-28 | Nokia Mobile Phones Ltd | Dual band antenna for a handset |
US6392605B2 (en) | 2000-02-02 | 2002-05-21 | Nokia Mobile Phones, Limited | Antenna for a handset |
EP1579529A4 (en) * | 2002-12-17 | 2007-09-19 | Ethertronics Inc | Antennas with reduced space and improved performance |
EP1579529A2 (en) * | 2002-12-17 | 2005-09-28 | Ethertronics, Inc. | Antennas with reduced space and improved performance |
US11264692B2 (en) | 2018-11-02 | 2022-03-01 | Yazaki Corporation | Antenna unit |
Also Published As
Publication number | Publication date |
---|---|
CN1124067A (en) | 1996-06-05 |
WO1995024745A1 (en) | 1995-09-14 |
AU1892995A (en) | 1995-09-25 |
DE69529496D1 (en) | 2003-03-06 |
DE69529192D1 (en) | 2003-01-30 |
EP0697138B1 (en) | 2003-01-29 |
EP0697139B1 (en) | 2002-12-18 |
JPH08510621A (en) | 1996-11-05 |
CN1079999C (en) | 2002-02-27 |
AU693867B2 (en) | 1998-07-09 |
AU1892895A (en) | 1995-09-25 |
CN1124066A (en) | 1996-06-05 |
US5886668A (en) | 1999-03-23 |
US5952975A (en) | 1999-09-14 |
RU2137266C1 (en) | 1999-09-10 |
JPH08510622A (en) | 1996-11-05 |
CN1094663C (en) | 2002-11-20 |
EP0697138A1 (en) | 1996-02-21 |
EP0697139A1 (en) | 1996-02-21 |
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