WO1991005373A1 - Adaptable antenna - Google Patents
Adaptable antenna Download PDFInfo
- Publication number
- WO1991005373A1 WO1991005373A1 PCT/US1990/005195 US9005195W WO9105373A1 WO 1991005373 A1 WO1991005373 A1 WO 1991005373A1 US 9005195 W US9005195 W US 9005195W WO 9105373 A1 WO9105373 A1 WO 9105373A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- patch
- open position
- coupled
- closed position
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q7/00—Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop
-
- 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
Abstract
An antenna system (10) with a first and second portions (16 and 18) that are rotatably movable with respect to each other. A first patch antenna element is coupled to the first antenna portion, and a second patch antenna element is coupled to the second antenna portion. The antenna system (10) may be rotated from an open position to a closed position and from the closed position to the open position so that the antenna system (10) operates as two patch antennas while in the open position and as a loop antenna while in the closed position. Alternatively, the antenna system (10) can operate as one antenna including two patch antenna elements (20 and 28) each having a different resonant frequency.
Description
ADAPTABLE ANTENNA
Technical Field
This invention relates generally to antennas and more specifically, to antennas for use in portable radios.
Background
Antennas used in portable radio applications typically have problems with sensitivity when worn on, or used'hear, the "human body because of the attenuation effects associated therewith. Moreover, in the transmission mode it is undesirab _ le to Use omnidirectional antennas because the human body attenuates the radiation transmitted in its direction. Additional problems associated with antennas used in portable radio applications are the limitation on the size of the antenna and the undesirablity of antennas protruding from the radio.
Summary of the Invention
Accordingly, it is an object of the present invention to , provide an antenna that may be used in portable radios that avoids the detriments of prior antennas used for the same or similar applications.
Briefly, according to the invention, an antenna system comprises a first antenna portion and a second antenna portion that is rotatably movable with respect to the first antenna' portion. A first patch antenna element is coupled to We first antefhfϊa ,
portion and a second patch antenna element is coupled to a second antenna portion. The second antenna portion of the antenna system may be rotated from an open position to a closed position so that the antenna system operates as two antennas while in the open position and as a loop antenna while in the closed position. Alternatively, the antenna system can operate as one antenna comprising two patch antenna elements each resonant at a different frequency when the antenna system is in the open position.
Brief Description of the Drawings
Figure 1 is an oblique view of a portable communication device with an antenna in accordance with the present invention.
Figure 2 is a side view of the communication device shown in Figure 1 , in the closed position.
Figure 3 is a bottom view of the communication device shown in Figure 1 , in the open position.
Figure 4 is a cross view of the communication device shown in Figure 1 , in the open position.
Detailed Description of the Preferred Embodiment
Referring to Figure 1 , a portable communication device 10 in accordance with the present invention is shown. The communication device 10 includes a first member 12 and a second member 14. The second member 14 is rotatably attached to the first member by means of a hinge 24 (or any other hinge means). The communication device 10 is shown in a partially open position, in which it may not be operative, for illustration purposes only. In this position the interior of the communication device 10 is partially visible, revealing a portion of a speaker 22 contained in the second member 14.
A first antenna portion 16 is attached to the first member 12. A second antenna portion 18 is attached to the second member 14 and is coupled to the first antenna portion 16 through the hinge 24. A clasp 26 is connected to the second antenna portion 18 and is rigidly attached to the second member 14. The
first antenna portion 16 is also electromagnetically coupled to a first patch antenna element 20.
Referring to Figure 2, there is shown a side view of the communication device 10 in a closed position. In this position, the first member 12 and the second member 14 are joined by the clasp 26 and the first antenna portion 16 (shown by a broken line) is coupled to the second antenna portion 18 (also shown by a broken line), thus forming a loop antenna that operates in a magnetic-field mode (i.e., it receives and transmits H field waves). The first patch antenna element 20 and a second patch antenna element 28 are electromagnetically coupled to the first and second antenna portions, 16 and 18, respectively. The first and second patch antenna elements 18 and 20 are not active while the communication device 10 is in the closed position. The communication device 10 is preferably used in a , receiving, or standby, mode while in the closed position. Thus, the communication device 10 may be worn on the body of a person using it. Use of the communication device 10 on or near the human body, while the communication device 10 is in the closed position, is advantageous because the human body enhances the performance of the communication device 10 by providing a good ground plane for the loop antenna. In addition, the loop, formed by the first and second antenna portions, 16 and 18, avoids undesirable protrusions from the communication device 10.
Referring to Figure 3, there is shown a bottom view of the communication device 10, in an open position. In this position the first and second antenna portions 16 and 18 do not form a loop antenna, and the first antenna portion 16 and the second antenna portion 18 act as transmission lines for applying signals to and receiving signals from the first and second patch antenna elements 20 and 28, respectively. Thus, the first and second patch antenna elements 20 and 28 become dominant. The first and second patch antenna elements, 20 aqd 28, eachjoperate in an electric-field mode (i.e., they transmit and receive E field waves). It is advantageous to have two patch antennas while the
W
communication device 10 is in use because the first patch antenna element 20 may be used to transmit and the second patch antenna element 28 may be used to receive. Moreover, if the patch antennas are used as one antenna, and each patch 5 antenna resonates at a different frequency, the effective bandwidth of the communication device 10 is increased.
Referring to Figure 4, there is shown a cross view of the communication device 10, in the open position. The speaker 22 is mounted within the second member 14 and a microphone 30 is
10 mounted within the first member 12 so that persons using the communication device 10 may hold to their faces the side containing the exterior portions of the speaker 22 and of the microphone 30. A keyboard 36 may be located on the same side of the communication device 10.
15 The signals to be transmitted may applied to the first patch antenna element 20 or to the second patch antenna element 28 through the first antenna portion 16 or the second antenna portion 18, respectively. The first patch antenna element 20 (or the second patch antenna element 28) then transmits the signal 32
20 (or 34), only in the direction shown in Figure 4 (i.e., they are unidirectional), thus avoiding the attenuation resulting from transmission in the direction of the user.
Therefore, the communication device 10 has the advantage over other communication devices that it operates as a
25 loop antenna when it is in a closed position and it may either operate as two patch antennas or as a single patch antenna with two different frequencies, when it is in the open position.
What is claimed is:
30
Claims
1. An antenna system comprising: a first antenna portion; a second antenna portion rotatably coupled to the first antenna portion, the antenna system being movable from an open position to a closed position, in which the first antenna portion is coupled to the second antenna portion to operate as a loop antenna, and movable from the closed position, to the open position; a first patch antenna element coupled to the first antenna portion; and a second patch antenna element coupled to the second antenna portion, so that the antenna system is coupled to operate as two patch antennas when the antenna system is in the open position.
2. The antenna of claim 1 , wherein the first patch antenna element and the second patch antenna element have different resonant frequencies.
5
3. The antenna of claim 1 , wherein the antenna system operates as two unidirectional patch antennas when the antenna is in the system open position.
10 4. The antenna of claim 2, wherein the first patch antenna element operates in a transmission mode and the second patch antenna element operates in a reception mode.
5. An antenna system comprising: a first antenna portion; a second antenna portion, rotatably coupled to the first antenna portion so that the second antenna portion may be moved from an open position to a closed position and from the closed position to the open position; and a first patch antenna element coupled to the first antenna portion so that the antenna system operates as a patch antenna when the antenna system is in the first position, and as a loop antenna when the antenna system is in the closed position.
6. The antenna system of claim 5, wherein the antenna system operates as a unidirectional patch antenna when it is in the open position.
7. The antenna system of claim 5 further comprising a second patch antenna element, having a resonant frequency different from the resonant frequency of the first patch antenna element, and coupled to the second antenna portion so that the antenna system operates as a single antenna with two resonant frequencies when the antenna system is in the open position.
8. A portable communication device somprising: a first member; a second member rotatably attached to the first member; and an antenna system comprising: a first antenna portion attached to the first member; a second antenna portion attached to the second member and rotatably coupled to the first antenna portion; the portable communication device being movable from an open position, to a closed position, in which the first antenna portion is coupled to the second antenna portion to operate as a loop antenna, and movable from the closed position to the open position; a first patch antenna element coupled to the first antenna portion; a second patch antenna element coupled to the second antenna portion so that the antenna system is coupled to operate as two patch antennas when the antenna system is in the open position.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP90913977A EP0500548B1 (en) | 1989-09-28 | 1990-09-17 | Adaptable antenna |
DE69014128T DE69014128T2 (en) | 1989-09-28 | 1990-09-17 | ADJUSTABLE AERIAL. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/414,168 US4992799A (en) | 1989-09-28 | 1989-09-28 | Adaptable antenna |
US414,168 | 1989-09-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1991005373A1 true WO1991005373A1 (en) | 1991-04-18 |
Family
ID=23640254
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1990/005195 WO1991005373A1 (en) | 1989-09-28 | 1990-09-17 | Adaptable antenna |
Country Status (6)
Country | Link |
---|---|
US (1) | US4992799A (en) |
EP (1) | EP0500548B1 (en) |
JP (1) | JP2558181B2 (en) |
AT (1) | ATE114078T1 (en) |
DE (1) | DE69014128T2 (en) |
WO (1) | WO1991005373A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19526581A1 (en) * | 1994-07-21 | 1996-02-01 | Motorola Inc | Multiposition antenna |
US7760098B2 (en) | 2004-11-30 | 2010-07-20 | Panasonic Corporation | Portable terminal |
Families Citing this family (57)
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GB9102935D0 (en) * | 1991-02-12 | 1991-03-27 | Shaye Communications Ltd | Improvements in and relating to antennae |
US5200756A (en) * | 1991-05-03 | 1993-04-06 | Novatel Communications Ltd. | Three dimensional microstrip patch antenna |
JP2794987B2 (en) * | 1991-05-31 | 1998-09-10 | 日本電気株式会社 | Portable wireless devices |
US5166695A (en) * | 1991-07-15 | 1992-11-24 | Motorola, Inc. | Auto-extending antenna |
WO1993018591A1 (en) * | 1992-03-02 | 1993-09-16 | Motorola, Inc. | Portable communications device |
JPH0697713A (en) * | 1992-07-28 | 1994-04-08 | Mitsubishi Electric Corp | Antenna |
AU680497B2 (en) * | 1993-06-30 | 1997-07-31 | Nec Corporation | Antenna apparatus having individual transmitting and receiving antenna elements for different frequencies |
US5404583A (en) * | 1993-07-12 | 1995-04-04 | Ball Corporation | Portable communication system with concealing features |
US5539414A (en) * | 1993-09-02 | 1996-07-23 | Inmarsat | Folded dipole microstrip antenna |
CA2152860A1 (en) * | 1994-07-15 | 1996-01-16 | Argyrios A. Chatzipetros | Antenna for communication device |
US5561436A (en) * | 1994-07-21 | 1996-10-01 | Motorola, Inc. | Method and apparatus for multi-position antenna |
US5561437A (en) * | 1994-09-15 | 1996-10-01 | Motorola, Inc. | Two position fold-over dipole antenna |
TW295733B (en) * | 1994-09-15 | 1997-01-11 | Motorola Inc | |
US5542106A (en) * | 1994-09-15 | 1996-07-30 | Motorola, Inc. | Electronic device having an RF circuit integrated into a movable housing element |
US5617102A (en) * | 1994-11-18 | 1997-04-01 | At&T Global Information Solutions Company | Communications transceiver using an adaptive directional antenna |
IL116423A0 (en) * | 1995-12-15 | 1996-03-31 | Geotek Communication Inc | A portable radio terminal having diversity reception antennas |
US5752204A (en) * | 1996-04-01 | 1998-05-12 | Telefonaktiebolaget L M Ericsson (Publ) | Antenna assembly for radiotelephonic device |
EP1372106B1 (en) * | 1996-08-09 | 2006-10-04 | Ferag AG | System comprising roll cores with roll bands and a reading/writing device for non-contact reading and/or overwriting of data |
SE509140C2 (en) * | 1997-04-10 | 1998-12-07 | Ericsson Telefon Ab L M | An antenna unit for transmitting and receiving signals from / to a portable radio terminal unit and a carrier radio unit comprising a terminal unit |
GB2325109B (en) * | 1997-05-09 | 2001-08-22 | Nokia Mobile Phones Ltd | Portable radio telephone |
US5905467A (en) * | 1997-07-25 | 1999-05-18 | Lucent Technologies Inc. | Antenna diversity in wireless communication terminals |
USD421017S (en) * | 1997-12-04 | 2000-02-22 | Zenith Electronics Corporation | Television antenna |
US5995052A (en) * | 1998-05-15 | 1999-11-30 | Ericsson Inc. | Flip open antenna for a communication device |
GB2344969B (en) * | 1998-12-19 | 2003-02-26 | Nec Technologies | Mobile phone with incorporated antenna |
US6301489B1 (en) | 1998-12-21 | 2001-10-09 | Ericsson Inc. | Flat blade antenna and flip engagement and hinge configurations |
US6232924B1 (en) | 1998-12-21 | 2001-05-15 | Ericsson Inc. | Flat blade antenna and flip mounting structures |
US6249688B1 (en) | 1998-12-21 | 2001-06-19 | Ericcson Inc. | Antenna electrical coupling configurations |
USD431558S (en) * | 1999-03-01 | 2000-10-03 | Ericsson Inc. | Flip and blade antenna for radiotelephone |
GB2353184A (en) * | 1999-08-13 | 2001-02-14 | Nokia Mobile Phones Ltd | Disabling a touch sensitive display screen when a call is established |
US6246374B1 (en) | 2000-04-06 | 2001-06-12 | Motorola, Inc. | Passive flip radiator for antenna enhancement |
JP2002171190A (en) * | 2000-12-01 | 2002-06-14 | Nec Corp | Compact portable telephone |
KR100678232B1 (en) * | 2000-12-30 | 2007-02-01 | 삼성전자주식회사 | Built-in antenna device for folder type portable radiotelephone |
JP3830773B2 (en) * | 2001-05-08 | 2006-10-11 | 三菱電機株式会社 | Mobile phone |
KR100450969B1 (en) * | 2001-07-20 | 2004-10-02 | 삼성전자주식회사 | Dual antenna antenna for radiation control in a mobile communication system |
US6774854B2 (en) * | 2001-11-16 | 2004-08-10 | Galtronics, Ltd. | Variable gain and variable beamwidth antenna (the hinged antenna) |
US6888504B2 (en) * | 2002-02-01 | 2005-05-03 | Ipr Licensing, Inc. | Aperiodic array antenna |
JP4096294B2 (en) * | 2002-05-14 | 2008-06-04 | 日本電気株式会社 | Mobile phone equipment |
US6836247B2 (en) | 2002-09-19 | 2004-12-28 | Topcon Gps Llc | Antenna structures for reducing the effects of multipath radio signals |
WO2004049502A1 (en) * | 2002-11-26 | 2004-06-10 | Sony Ericsson Mobile Communications Ab | Antenna for portable communication device equipped with a hinge |
DE60213829D1 (en) * | 2002-11-26 | 2006-09-21 | Sony Ericsson Mobile Comm Ab | Antenna for a portable radio with a joint |
US20040203526A1 (en) * | 2002-12-31 | 2004-10-14 | Ricardo Romeu | Wireless communication device with automatically deploying and retracting antenna |
JP4566103B2 (en) * | 2003-02-06 | 2010-10-20 | パナソニック株式会社 | Portable wireless communication device |
EP1445821A1 (en) * | 2003-02-06 | 2004-08-11 | Matsushita Electric Industrial Co., Ltd. | Portable radio communication apparatus provided with a boom portion |
JP2005073168A (en) * | 2003-08-27 | 2005-03-17 | Uniden Corp | Reradiation antenna system |
JP2005244260A (en) * | 2003-12-24 | 2005-09-08 | Toshiba Corp | Portable radio terminal |
FR2867934B1 (en) * | 2004-03-18 | 2006-06-30 | Sagem | TWO-PART TELEPHONE HAVING RADIANT FLAT SURFACE ANTENNA |
US20070152881A1 (en) * | 2005-12-29 | 2007-07-05 | Chan Yiu K | Multi-band antenna system |
US20080291345A1 (en) * | 2007-05-23 | 2008-11-27 | Antennas Direct, Inc. | Picture frame antenna assemblies |
JP5222716B2 (en) * | 2008-12-25 | 2013-06-26 | 京セラ株式会社 | Mobile device |
US8823219B2 (en) * | 2009-09-14 | 2014-09-02 | Qualcomm Incorporated | Headset for receiving wireless power |
US20160204501A1 (en) * | 2013-12-09 | 2016-07-14 | Dockon Ag | Closely coupled re-radiator compound loop antenna structure |
US9748651B2 (en) | 2013-12-09 | 2017-08-29 | Dockon Ag | Compound coupling to re-radiating antenna solution |
US9799956B2 (en) | 2013-12-11 | 2017-10-24 | Dockon Ag | Three-dimensional compound loop antenna |
US10090578B2 (en) * | 2015-08-14 | 2018-10-02 | Penumbra Brands, Llc | Radiation-redirecting external case for portable communication device |
CN110401009B (en) * | 2018-04-25 | 2021-05-07 | Oppo广东移动通信有限公司 | Electronic device |
CN110492247B (en) * | 2018-05-14 | 2021-04-16 | Oppo广东移动通信有限公司 | Electronic device and control method of electronic device |
US10812126B1 (en) | 2019-09-20 | 2020-10-20 | Nxp B.V. | Near-field device including multiple conductive plates |
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US2292163A (en) * | 1942-01-27 | 1942-08-04 | Gen Electric | Radio receiver |
US4123756A (en) * | 1976-09-24 | 1978-10-31 | Nippon Electric Co., Ltd. | Built-in miniature radio antenna |
US4313119A (en) * | 1980-04-18 | 1982-01-26 | Motorola, Inc. | Dual mode transceiver antenna |
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JPS5412289B2 (en) * | 1974-07-30 | 1979-05-22 | ||
JPS5711049A (en) * | 1980-06-24 | 1982-01-20 | Dainippon Printing Co Ltd | Hydrophillic laminate and its use |
US4342999A (en) * | 1980-11-25 | 1982-08-03 | Rca Corporation | Loop antenna arrangements for inclusion in a television receiver |
JPS6171702A (en) * | 1984-09-17 | 1986-04-12 | Matsushita Electric Ind Co Ltd | Small-sized antenna |
US4847625A (en) * | 1988-02-16 | 1989-07-11 | Ford Aerospace Corporation | Wideband, aperture-coupled microstrip antenna |
-
1989
- 1989-09-28 US US07/414,168 patent/US4992799A/en not_active Expired - Fee Related
-
1990
- 1990-09-17 AT AT90913977T patent/ATE114078T1/en active
- 1990-09-17 EP EP90913977A patent/EP0500548B1/en not_active Expired - Lifetime
- 1990-09-17 DE DE69014128T patent/DE69014128T2/en not_active Expired - Fee Related
- 1990-09-17 JP JP2513074A patent/JP2558181B2/en not_active Expired - Lifetime
- 1990-09-17 WO PCT/US1990/005195 patent/WO1991005373A1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2292163A (en) * | 1942-01-27 | 1942-08-04 | Gen Electric | Radio receiver |
US4123756A (en) * | 1976-09-24 | 1978-10-31 | Nippon Electric Co., Ltd. | Built-in miniature radio antenna |
US4313119A (en) * | 1980-04-18 | 1982-01-26 | Motorola, Inc. | Dual mode transceiver antenna |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19526581A1 (en) * | 1994-07-21 | 1996-02-01 | Motorola Inc | Multiposition antenna |
DE19526581C2 (en) * | 1994-07-21 | 1998-12-03 | Motorola Inc | Antenna arrangement |
US7760098B2 (en) | 2004-11-30 | 2010-07-20 | Panasonic Corporation | Portable terminal |
Also Published As
Publication number | Publication date |
---|---|
ATE114078T1 (en) | 1994-11-15 |
US4992799A (en) | 1991-02-12 |
EP0500548B1 (en) | 1994-11-09 |
DE69014128T2 (en) | 1995-06-01 |
JPH05501333A (en) | 1993-03-11 |
EP0500548A1 (en) | 1992-09-02 |
JP2558181B2 (en) | 1996-11-27 |
EP0500548A4 (en) | 1992-10-14 |
DE69014128D1 (en) | 1994-12-15 |
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