US20010034212A1 - Paging antenna and radiotelephones incorporating same - Google Patents
Paging antenna and radiotelephones incorporating same Download PDFInfo
- Publication number
- US20010034212A1 US20010034212A1 US09/862,848 US86284801A US2001034212A1 US 20010034212 A1 US20010034212 A1 US 20010034212A1 US 86284801 A US86284801 A US 86284801A US 2001034212 A1 US2001034212 A1 US 2001034212A1
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- United States
- Prior art keywords
- antenna
- paging
- housing
- primary
- primary antenna
- 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.)
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- 230000005855 radiation Effects 0.000 claims abstract description 20
- 239000000758 substrate Substances 0.000 claims 9
- 239000013598 vector Substances 0.000 description 11
- 239000003989 dielectric material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 1
Images
Classifications
-
- 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
- H01Q1/084—Pivotable antennas
-
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Support Of Aerials (AREA)
- Telephone Set Structure (AREA)
Abstract
Description
- The present invention relates generally to radiotelephones and, more particularly, to radiotelephone antennas.
- Radiotelephones generally refer to communications terminals which provide a wireless communications link to one or more other communications terminals. Radiotelephones may be used in a variety of different applications, including cellular telephone, land-mobile (e.g., police and fire departments), and satellite communications systems.
- Radiotelephones and other communication devices are undergoing miniaturization. Indeed, many of the contemporary radiotelephone models are less than 11-12 centimeters in length. As a result, primary antennas that swivel or pivot from a stored position overlying the keypad or other housing portion of a radiotelephone to a position extending outwardly from the radiotelephone are becoming increasingly attractive to radiotelephone manufacturers. Pivotable primary antennas can achieve good radiation performance when in outwardly extended positions. Unfortunately, these pivotable antennas can be blocked by the body of a user when in a stored position (also known as “body shadowing”). As a result, radiotelephone operation may be difficult when a pivotable antenna is in a stored position.
- In addition, when in a stored position, pivotable primary antennas that overlie a keypad or other housing portion of a radiotelephone may be insufficient for paging mode operation. For example, when a radiotelephone with a pivotable primary antenna in a stored position is placed within a user's shirt pocket, with the pivotable primary antenna facing the user's body (body shadowing problem), signal reception and radiation may be blocked by the user's body on one side and portions of the radiotelephone housing on the other side, particularly conductive housing portions.
- It would be desirable to enhance the ability of radiotelephones that utilize pivotable primary antennas that overlie a keypad or other housing portion to receive paging signals when the primary antenna is in a stored position.
- In view of the above, it is therefore an object of the present invention to enhance the ability of radiotelephones utilizing pivotable primary antennas to receive paging signals when a primary antenna is in a stored position.
- It is another object of the present invention to facilitate miniaturization efforts with respect to radiotelephones and other communication devices.
- These and other objects of the present invention are provided by antenna systems for electronic devices, such as radiotelephones, wherein a paging antenna is provided to enhance paging mode operation when a pivotable primary antenna is in a stored position. Radiotelephones incorporating a pivotable primary antenna typically utilize a hinge rotatably secured to one end of the radiotelephone housing. A primary antenna having a first radiation axis (i.e., signal vector) is secured to the hinge and rotatable therewith along a predetermined path of rotation from a stored position adjacent the housing to an operating position extending away from the housing. A paging antenna according to the present invention is disposed within the hinge and is electrically connected with the primary antenna. The paging antenna has a second radiation axis (i.e., signal vector) that is orthogonal to the first radiation axis of the primary antenna and is configured to receive paging signals when the primary antenna is in a stored position.
- Because paging antennas according to the present invention are located in a position unobstructed by other portions of a radiotelephone housing, a paging signal can be received even when the primary antenna is in a stored position. Paging antennas according to the present invention preferably have a coiled (e.g., helical or conical) configuration that comprises a radiation axis that is orthogonal to the radiation axis of the primary antenna. The paging antenna may operate as a quarter-wave antenna, such that the primary antenna and paging antennas operate independently as quarter-wave antennas in the operating and stored positions. Because the radiation axes of the primary and paging antennas are orthogonal, the vector sum of the primary and paging antenna signal vectors is the input signal to the transceiver. In addition, paging antennas according to the present invention are preferably configured such that an impedance of the primary antenna and paging antenna, in combination, matches an impedance of the transceiver when the primary antenna is in both the stored and operating positions.
- Radiotelephones incorporating paging antennas according to the present invention can be advantageous because paging signals can be received even when a primary antenna is in a stored position and a radiotelephone is stored within a user's pocket. As a result, performance of radiotelephones, particularly paging performance, may be enhanced by the present invention. Furthermore, a paging antenna according to the present invention can combine with a primary antenna for better signal reception when the primary antenna is in both a stored and operating position.
- The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain principles of the invention.
- FIG. 1 is a schematic illustration of a conventional arrangement of electronic components for enabling a radiotelephone to transmit and receive telecommunications signals.
- FIG. 2A illustrates an exemplary radiotelephone within which the present invention can be incorporated, wherein the radiotelephone includes a pivotable primary antenna in an operational position.
- FIG. 2B is a side elevational view of the radiotelephone of FIG. 2A taken along
lines 2B-2B. - FIG. 3A illustrates the pivotable primary antenna of FIGS.2A-2B in a stored position adjacent a portion of the radiotelephone housing.
- FIG. 3B is a side elevational view of the radiotelephone of FIG. 3A taken along
lines 3B-3B. - FIG. 4 illustrates a paging antenna, according to the present invention, incorporated into a portion of a hinge of a pivotable primary antenna.
- FIG. 5 illustrates a pivotable primary antenna for a radiotelephone in a stored position and a paging antenna according to the present invention incorporated within a portion of the primary antenna hinge.
- FIG. 6 illustrates a paging antenna according to the present invention having a conical configuration.
- FIG. 7A illustrates an electrical equivalent circuit for a quarter-wave paging antenna having a radiation axis orthogonal with a radiation axis of a quarter-wave primary antenna, according to the present invention.
- FIG. 7B illustrates an electrical equivalent circuit for a quarter-wave paging antenna having a radiation axis orthogonal with a quarter-wave meandering primary antenna, according to the present invention.
- FIG. 7C illustrates an input signal to a transceiver which is the vector sum of a primary antenna signal and a paging antenna signal according to the present invention.
- FIG. 8 illustrates impedance matching circuitry disposed within a hinge of a pivotable antenna for a radiotelephone according to the present invention.
- FIG. 9A illustrates a “flip-style” radiotelephone having a flip cover and a separate pivotable primary antenna with a paging antenna according to the present invention incorporated within the primary antenna hinge, and wherein the flip cover and primary antenna are in stored positions.
- FIG. 9B illustrates the radiotelephone of FIG. 9A with the flip cover and primary antenna in respective operational positions.
- The present invention now will be described more fully hereinafter with reference to the accompanying drawings, in which preferred embodiments of the invention are shown. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout.
- A conventional arrangement of electronic components that enable a radiotelephone to transmit and receive radiotelephone communication signals is shown schematically in FIG. 1, and is understood by those skilled in the art of radiotelephone communications. An
antenna 10 for receiving and transmitting radiotelephone communication signals is electrically connected to a radio-frequency transceiver 12 that is further electrically connected to acontroller 14, such as a microprocessor. Thecontroller 14 is electrically connected to aspeaker 16 that transmits a remote signal from thecontroller 14 to a user of a radiotelephone. Thecontroller 14 is also electrically connected to amicrophone 18 that receives a voice signal from a user and transmits the voice signal through thecontroller 14 andtransceiver 12 to a remote device. Thecontroller 14 is electrically connected to akeypad 20 anddisplay 22 that facilitate radiotelephone operation. Other elements of radiotelephones are conventional and need not be described herein. - Conventional radiotelephones employ an antenna which is electrically connected to a transceiver operably associated with a signal processing circuit positioned on an internally disposed printed circuit board. To radiate radio frequency (RF) energy with minimum loss, or to pass along received RF energy to a radiotelephone receiver with minimum loss, the transceiver and the antenna are preferably interconnected such that their respective impedances are “matched”. Impedance matching and systems for matching impedance are well known in this art and need not be discussed further.
- Referring now to FIGS.2A-2B and FIGS. 3A-3B, a
radiotelephone 34 within which a paging antenna according to the present invention can be incorporated is illustrated. Aprimary antenna 30 is rotatably mounted to thehousing 32 of theradiotelephone 34 via ahinge 36. Thehinge 36 facilitates rotation of theprimary antenna 30 about an axis A from a stored position (FIGS. 3A-3B) to an operating position (FIGS. 2A-2B). The illustratedhinge 36 is secured to anend 32 a of the radiotelephone housing so as to be unobstructed by other portions of thehousing 32. It is understood that the present invention is not limited to radiotelephones having the illustrated hinge configuration. For example, thehinge 36 of the illustratedradiotelephone 34 may extend across theentire end 32 a thereof. - In an operating position, the
primary antenna 30 extends outwardly and away from thehousing 32, as illustrated. In the stored position (FIGS. 3A-3B), theprimary antenna 30 overlies thefront surface 32 a of thehousing 32 adjacent thekeypad 33,display 35,speaker slots 37 andmicrophone slot 38, as illustrated. When theprimary antenna 30 is in the stored position, the radiotelephone may be referred to as being in “paging” mode. - The illustrated
primary antenna 30 has a generally rectangular configuration and includes afree end 30 a and anopposite end 30 b pivotally mounted to the housing viahinge 36. Theantenna 30 may be formed from a dielectric material and may include one or moreconductive elements 31 disposed on aface 29 of theprimary antenna 30, or disposed within the dielectric material, that serve as one or more radiating elements for transmitting and receiving radio frequency communications. Aconductive element 31 of theprimary antenna 30 may serve as a dipole or as a meandering antenna, as would be understood by those skilled in this art. When in the operational position (FIGS. 2A-2B), theprimary antenna 30 may operate as a quarterwave antenna, as is understood by those skilled in this art. The primary antennaconductive element 31 is electrically connected to a transceiver (not shown) within theradiotelephone housing 32, as would be known to those skilled in the art of radiotelephone communications, and need not be described further herein. - It is to be understood that the present invention is not limited to the illustrated radiotelephone or the illustrated pivotable primary antenna. Antennas incorporating paging antennas according to the present invention may have various shapes and sizes and may be pivotally attached to an electronic device, such as a radiotelephone, in various ways. In addition, paging antennas according to the present invention may be utilized with various types of electronic devices including, but not limited to, radiotelephones.
- Referring now to FIG. 4, a
paging antenna 40 according to the present invention is disposed within a portion of ahinge 36 that rotatably connects a pivotableprimary antenna 30 to a radiotelephone housing. Thepaging antenna 40 is preferably electrically connected with theconductive element 31 of theprimary antenna 30. The radiation axis (i.e., signal vector) of theprimary antenna 30 and thepaging antenna 40 are orthogonal (i.e., form a right angle) with each other (FIG. 7C). Accordingly, when theprimary antenna 30 is in a stored position, as illustrated in FIG. 5, thepaging antenna 40 of the present invention is unobstructed by other portions of theradiotelephone 34. When theradiotelephone 34 is stored within a user's pocket, thepaging antenna 40 is positioned advantageously to receive paging signals even though theprimary antenna 30 is blocked by both the user's body and theradiotelephone housing 32. - Paging antennas according to the present invention may have various shapes and configurations and can be utilized within various types of hinges for pivotally connecting swivel antennas to electronic devices. Paging antennas according to the present invention can be encapsulated within the dielectric material of the hinge, or can be housed within a cavity of the hinge. Furthermore, paging antennas according to the present invention may be incorporated into any type of protuberance that extends outwardly from a radiotelephone housing so as to be unobstructed by the housing.
- Particularly preferable are conical and helical paging antenna configurations. A paging antenna according to the present invention with a conical or helical configuration can be easily disposed within small cavities and housing portions, such as hinges. FIG. 6 illustrates a
paging antenna 40 according to the present invention having a conical configuration. It is understood that the shape and configuration of a paging antenna according to the present invention may be a tuning parameter and may vary according to the configuration and tuning performance of a primary antenna. - Referring now to FIGS. 7A and 7B, an exemplary electrical equivalent circuit for a primary antenna combined with a paging antenna according to the present invention is illustrated. Paging antennas according to the present invention preferably operate as a quarter-wave antenna. When a paging antenna is placed orthogonally with a quarter-wave dipole or meandering primary antenna, the combined antenna can have higher antenna gain than either the primary or paging antenna individually, both when the primary antenna is in an operating position and a stored position. FIG. 7A illustrates an electrical equivalent circuit for a quarter-wave paging antenna connected orthogonally with a quarter-wave dipole primary antenna, according to the present invention. FIG. 7B illustrates an electrical equivalent circuit for a quarter-wave paging antenna connected orthogonally with a quarter-wave meandering primary antenna, according to the present invention.
- As illustrated in FIG. 7C, the radiation axis or
signal vector 47 theprimary antenna 30 is orthogonal to thesignal vector 48 of thepaging antenna 40. The vector sum of the primary and pagingantenna signal vectors input signal 49 to the transceiver. As illustrated, theinput signal 49 is greater than either of thesignal vectors - According to another embodiment of the present invention,
impedance matching circuitry 45 can be disposed within a portion of thehinge 36 that rotatably connects theprimary antenna 30 to the radiotelephone housing 32 (FIG. 8). By placingimpedance matching circuitry 45 close to theprimary antenna 30, any reflection caused by impedance mismatch by connector or wire can be reduced. - Referring now to FIGS.9A-9B, a “flip-style”
radiotelephone 134 incorporating apaging antenna 40 according to the present invention is illustrated. The illustratedradiotelephone 134 includes aflip cover 139 that houses aspeaker 137, and abottom handset portion 138 pivotally connected thereto viahinge 136. Theflip cover 139 includes opposite front andback surfaces bottom handset portion 138, as illustrated. - In operation, the
flip cover 139 andprimary antenna 30 may be pivoted by a user between stored (FIG. 9A) and open (FIG. 9B) positions. When in a stored position, theflip cover 139 overlies thebottom handset housing 138. Theprimary antenna 130, when in a stored position, pivots down upon the flip portion backsurface 139 b. Accordingly, thepaging antenna 40 can remain unobstructed even when theprimary antenna 130 andflip cover 139 are in stored positions. - The foregoing is illustrative of the present invention and is not to be construed as limiting thereof. Although a few exemplary embodiments of this invention have been described, those skilled in the art will readily appreciate that many modifications are possible in the exemplary embodiments without materially departing from the novel teachings and advantages of this invention. Accordingly, all such modifications are intended to be included within the scope of this invention as defined in the claims. Therefore, it is to be understood that the foregoing is illustrative of the present invention and is not to be construed as limited to the specific embodiments disclosed, and that modifications to the disclosed embodiments, as well as other embodiments, are intended to be included within the scope of the appended claims. The invention is defined by the following claims, with equivalents of the claims to be included therein.
Claims (14)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/862,848 US6430419B2 (en) | 1999-05-06 | 2001-05-21 | Paging antenna and radiotelephones incorporating same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/305,956 US6259897B1 (en) | 1999-05-06 | 1999-05-06 | Paging antenna and radiotelephones incorporating same |
US09/862,848 US6430419B2 (en) | 1999-05-06 | 2001-05-21 | Paging antenna and radiotelephones incorporating same |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/305,956 Division US6259897B1 (en) | 1999-05-06 | 1999-05-06 | Paging antenna and radiotelephones incorporating same |
Publications (2)
Publication Number | Publication Date |
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US20010034212A1 true US20010034212A1 (en) | 2001-10-25 |
US6430419B2 US6430419B2 (en) | 2002-08-06 |
Family
ID=23183097
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/305,956 Expired - Lifetime US6259897B1 (en) | 1999-05-06 | 1999-05-06 | Paging antenna and radiotelephones incorporating same |
US09/862,848 Expired - Lifetime US6430419B2 (en) | 1999-05-06 | 2001-05-21 | Paging antenna and radiotelephones incorporating same |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/305,956 Expired - Lifetime US6259897B1 (en) | 1999-05-06 | 1999-05-06 | Paging antenna and radiotelephones incorporating same |
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US (2) | US6259897B1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150281417A1 (en) * | 2014-03-25 | 2015-10-01 | Boe Technology Group Co., Ltd. | Auxiliary Device for Mobile Terminal and Mobile Terminal Product |
Families Citing this family (13)
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US6549788B1 (en) * | 2000-01-12 | 2003-04-15 | Ericsson Inc. | Combination cellular/satellite wireless communication devices |
US7185196B1 (en) * | 2000-09-15 | 2007-02-27 | Atheros Communications, Inc. | Key caching system |
KR200273898Y1 (en) * | 2002-01-17 | 2002-04-27 | 김봉영 | Heatsink in Personal Computer |
KR100593984B1 (en) * | 2002-01-18 | 2006-06-30 | 삼성전자주식회사 | Antenna unit using hinge spring |
US7155266B2 (en) * | 2004-04-21 | 2006-12-26 | Nokia Corporation | Hinge for fold phone |
US20060034601A1 (en) * | 2003-04-23 | 2006-02-16 | Tage Andersson | Multi-function two panel electronic device with 360° relative motion |
US7426406B2 (en) * | 2003-04-23 | 2008-09-16 | Nokia Corporation | Mobile communications device with synchronising hinge |
US7512426B2 (en) * | 2003-04-23 | 2009-03-31 | Nokia Corporation | Mobile communications device with synchronising hinge |
US6758689B1 (en) * | 2003-05-29 | 2004-07-06 | Interlink Electronics, Inc. | Wireless adapter having foldable geometrically loop-like antenna |
TWI231066B (en) * | 2004-04-19 | 2005-04-11 | Benq Corp | Embedded antenna device |
US7414834B2 (en) * | 2005-04-21 | 2008-08-19 | Nokia Corporation | Mobile communications device with synchronising hinge |
US7379015B2 (en) | 2005-12-01 | 2008-05-27 | Trimble Navigation Limited | First responder positioning apparatus |
US9136590B2 (en) * | 2012-10-10 | 2015-09-15 | Kabushiki Kaisha Toshiba | Electronic device provided with antenna device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6266017B1 (en) * | 1992-04-08 | 2001-07-24 | 3Com Corporation | Retractable antenna system |
US5214434A (en) * | 1992-05-15 | 1993-05-25 | Hsu Wan C | Mobile phone antenna with improved impedance-matching circuit |
US5579023A (en) * | 1995-05-08 | 1996-11-26 | Blaese; Herbert R. | Rotatable antenna and integral, shielded impedance matching network |
US5821907A (en) * | 1996-03-05 | 1998-10-13 | Research In Motion Limited | Antenna for a radio telecommunications device |
US6025816A (en) * | 1996-12-24 | 2000-02-15 | Ericsson Inc. | Antenna system for dual mode satellite/cellular portable phone |
US5907306A (en) * | 1996-12-30 | 1999-05-25 | Ericsson Inc. | Retractable radiotelephone antennas and associated radiotelephone communication methods |
US5943021A (en) * | 1998-08-03 | 1999-08-24 | Ericsson Inc. | Swivel antenna with parasitic tuning |
-
1999
- 1999-05-06 US US09/305,956 patent/US6259897B1/en not_active Expired - Lifetime
-
2001
- 2001-05-21 US US09/862,848 patent/US6430419B2/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20150281417A1 (en) * | 2014-03-25 | 2015-10-01 | Boe Technology Group Co., Ltd. | Auxiliary Device for Mobile Terminal and Mobile Terminal Product |
Also Published As
Publication number | Publication date |
---|---|
US6430419B2 (en) | 2002-08-06 |
US6259897B1 (en) | 2001-07-10 |
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