WO2002097918A1 - Low profile antenna - Google Patents
Low profile antennaInfo
- Publication number
- WO2002097918A1 WO2002097918A1 PCT/US2002/016919 US0216919W WO02097918A1 WO 2002097918 A1 WO2002097918 A1 WO 2002097918A1 US 0216919 W US0216919 W US 0216919W WO 02097918 A1 WO02097918 A1 WO 02097918A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- antenna
- elements
- elongated
- manhole cover
- cable
- 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
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/40—Radiating elements coated with or embedded in protective material
-
- 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
- H01Q9/16—Resonant antennas with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole
Definitions
- the present invention relates generally to antennas. More particularly, the present invention relates to antennas having a low profile for use in roadways, sewer manholes, and other applications where a low profile is desirable.
- An even further object of the invention is to provide an antenna that is inconspicuous so as to be resistant to vandalism.
- antenna for receiving and/or transmitting radio frequencies includes a first elongated element
- the first and second elongated elements each have a height that is of a low profile and lengths that are substantially equal.
- the elongated elements are covered at least partially with a substantially non-conductive covering.
- first elongated element and the second elongated element are positioned to extend in opposite directions, form substantially a straight line, and are
- the second elongated element are sized and positioned to fit within one or more grooves or
- the height that is of a low profile is preferably about one- fourth of an inch or less, or even more preferably flush with the mounting surface, and the optional substantially straight line formed by the first and second elements has a length that corresponds
- the length preferably provides an electrically tuned antenna that is capable of transmission in close proximity to a surface.
- the cable has a diameter that is at least as small as the diameter of
- the cable may also be connected to a transmitter and or a receiver.
- the antenna includes an adhesive material that is affixed to at least a portion of the substantially non- conductive covering.
- the elongated elements may be positioned within at least
- one groove or recess of a standard manhole cover may be embedded within or flush with
- the antenna may be fixed to and sealed
- antenna is being positioned on or within.
- the position that is substantially flush with the traffic surface is about one-fourth of an inch or less.
- the non-conductive covering is optionally and preferably is comprised of at least one of rubber, plastic, non-metallic tubing, an adhesive, and a non-
- FIG. 5 A shows detail of a portion of that embodiment.
- each antenna leg at or near the gap, i.e., a central point from which each antenna leg radiates in opposing directions generally forming a straight line.
- the antenna generally follows
- the antenna wire may be led away from the antenna legs in any direction which suits the necessary mounting arrangement. For example, in the case of mounting the antenna on a flat or
- the antenna cable may be routed along side the antenna legs until it reaches a suitable position to transition through or off the mounting surface.
- the antenna legs are partially, substantially, or entirely housed in a protective covering.
- the protective material helps to improve durability and protect the
- the protective covering is substantially, and
- the protective covering helps to reduce the risk of damage to the conductive elements during
- the conductive elements and the protective covering may be further encased in an
- a moldable material that exhibits high strength once cured, and it preferably has a
- the encapsulation material preferably also has the properties of being impermeable to water, solvents, salts and other common such materials.
- the external coating or encapsulation material is durable,
- a single antenna leg may be used, or more than two legs may be used, and the leg or legs may be positioned in a loop, a curve, or
- the protective covering is not included and the antenna legs are directly mounted
- the protective covering and the external coating may be integral with each other,
- the protective covering and/or the external coating may be made of a material that partially or entirely degrades or disintegrates, thus leaving only
- FIG. 1 Referring to FIG. 1,
- a dipole antenna includes conductive elements 1 and 2 that serve as the antenna legs.
- conductive elements 1 and 2 that serve as the antenna legs.
- the conductive elements 1 and 2 are flexible to allow the elements to be positioned in various scenarios
- An antenna cable 5 is attached to the antenna legs, preferably at or near the gap that separates the legs.
- the cable preferably includes at least two conductors so that one conductor
- the cable may be any material that is connected to the antenna leg that is designated as positive.
- the cable may be any material that is designated as positive.
- the cable may be any material that is designated as positive.
- the cable may run alongside the legs, or the cable may extend from the legs
- the elements are preferably encased in a flexible, non-conductive
- the protective covering may be made of rubber, plastic,
- FIG 1 illustrates an embodiment where the elements are completely encased within the protective covering, optionally the protective
- covering may cover only a portion of the elements, such as the top of the elements.
- the conductive elements and/or the protective covering may
- the antenna may be added when the antenna is installed in its final service location.
- the external coating 4 is comprised of an epoxy, or of rubber or plastic with an adhesive, that serves to fixedly attach the antenna to a mounting surface.
- the external coating 4 is preferably applied to all or part of the antenna wire
- FIG. 3 provides a side view of the preferred embodiment of FIG.1 and illustrates that the
- conductive elements 1 and 2 are covered by the protective covering 3, which is in turn covered
- protective covering 3 is not included and
- the antenna legs are directly mounted to a mounting surface with only the external coating 4
- the final assembly consists of placing the antenna wire through a suitably sized hole in
- the antenna wire can be routed to its final connection to the transmitter and/or receiver.
- FIGs. 5 and 5 A by threading the wire through a hole in the manhole cover, attaching the wire to the antenna legs, preparing the antenna legs to adhere to a mounting surface such as by adding an adhesive, and placing the antenna legs on the manhole cover or within one or more
- the antenna wire is also attached to the transmitter/receiver within the manhole.
- a disconnect is included between the antenna and the transmitter/receiver to allow
- the antenna may be mounted on a surface other than the manhole surface, such as on a roadway, or even partially or completely embedded within and/or flush with the surface, as shown in FIG. 6, such as in concrete, asphalt, other pavement, or even
- the wire may be run to
- the manhole cover to be passed through a hole, or it may enter the manhole through a hole in the
- the wire may run along a surface, or it may be positioned within a groove, a trench, a conduit, or another enclosed or partially enclosed
- FIG. 3 illustrates an example of an antenna that is capable of such a configuration.
- the antenna of the present invention is a dipole
- the connecting cable is inserted through a hole
- FIGs. 5, 5 A, and 6 illustrate various aspects of this embodiment.
- Coaxial cable 5 is shown extending through
- FIG. 5 A illustrates detail of this embodiment
- FIG. 6 shows the antenna of the present invention mounted in a traffic surface wherein the elongated elements (not shown) are positioned in a groove of the surface and a hole has been drilled into the surface
- the wire may be passed through an existing hole in the manhole
- hole after the wire is passed through it, is preferably filled with an epoxy and/or a sealant.
- the construction of the antenna as a dipole provides two "legs,” or antenna elements,
- Prior art dipole antennas generally must be mounted a distance, typically one-half-wavelength or more above the ground. This antenna, however, is specially tuned to optimize performance
- leg lengths are specially tuned to compensate for
- the frequency of the transmitter is consistent with that of a wireless telephone
- the overall combined length of the legs is between about six-and-one-half and about seven-and-
- the low profile of the antenna allows unique mounting opportunities. When attached to a flat surface, it provides for a low profile above the flat surface, helping to make the antenna
- the height of the antenna is no greater than about one-quarter inch, although antennas having greater height may be used so long as the overall profile above ground is low or nonexistent.
- the low profile also allows for the use of an antenna assembly having more than one
- each dipole element would be mounted side-by-
- a configuration may
- dipole element used for transmission on one frequency and a second dipole element
- the multiple dipole elements are encased within a common protective covering and/or external coating.
- the external appearance of such a configuration is not substantially different from the appearance of an
- This antenna offers particularly low cost of construction and allows varied installation
- antenna design is also such that, when installed in locations such as manhole covers, the antenna is nearly invisible to the pedestrian, thus making it less susceptible to vandalism. Penetration
- the low profile of the present inventive antenna thus reduces or eliminates the susceptibility for damage of the antenna resulting from roadway traffic.
- the present invention thus reduces or eliminates the susceptibility for damage of the antenna resulting from roadway traffic.
- inventive antenna is non susceptible to damage from snow plows, street sweepers, and other such
- This invention also minimizes or eliminates any
- manhole cover to allow mounting of the antenna.
- this invention requires only a small hole or slot to allow the
- antennas of this nature require large holes to serve to secure the antenna to the manhole cover
- low profile of the present inventive antenna reduces or eliminates the
- the present invention is useful for applications requiring the placement of an antenna in high foot-traffic areas, such as sidewalks, floors, decking, hallways and stairways.
- Another improvement offered by this invention is the ease of installation.
- the antenna can be placed on the manhole or adjacent roadway and secured within a short period of time with minimal skill or tools
- This design produces an antenna that is relatively inexpensive when compared to conventional
- This invention also permits mounting of the antenna on a manhole cover, or directly on or in the roadway with minimal excavation, to route the antenna wire or achieve a suitable cavity
- An alternative installation method involves placing the same style antenna element that is used on the manhole lid installation, into a permanently mounted position that is buried just
- These materials can include but are not limited to concrete, brick, and asphalt.
- a narrow slot is cut into the material to allow placement
- the drilled hole typically leads to the area where the connected radio
- the antenna elements are then made waterproof by filling the slot with a specialized epoxy that is designed especially for sealing the type of material
- the antenna offers several opportunities for delivery of data signals to or from the transmitter and/or receiver to which it is connected.
- the antenna may be connected
- the antenna could electrically transmit the
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02737247A EP1391006A4 (en) | 2001-05-30 | 2002-05-30 | Low profile antenna |
CA002448568A CA2448568A1 (en) | 2001-05-30 | 2002-05-30 | Low profile antenna |
US10/721,254 US20060176231A1 (en) | 2001-05-30 | 2003-11-26 | Low profile antenna |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/870,232 | 2001-05-30 | ||
US09/870,232 US6518933B2 (en) | 2001-05-30 | 2001-05-30 | Low profile antenna |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/870,232 Continuation US6518933B2 (en) | 2001-05-30 | 2001-05-30 | Low profile antenna |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/721,254 Continuation US20060176231A1 (en) | 2001-05-30 | 2003-11-26 | Low profile antenna |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002097918A1 true WO2002097918A1 (en) | 2002-12-05 |
Family
ID=25354995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2002/016919 WO2002097918A1 (en) | 2001-05-30 | 2002-05-30 | Low profile antenna |
Country Status (4)
Country | Link |
---|---|
US (2) | US6518933B2 (en) |
EP (1) | EP1391006A4 (en) |
CA (1) | CA2448568A1 (en) |
WO (1) | WO2002097918A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004073109A2 (en) * | 2003-02-07 | 2004-08-26 | Ads Corporation | Deformable antenna assembly for mounting in gaps and crevices |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6518933B2 (en) * | 2001-05-30 | 2003-02-11 | Ads Corporation | Low profile antenna |
DE20219886U1 (en) * | 2002-12-21 | 2003-03-06 | Sewerin Hermann Gmbh | Cover, in particular made of a metallic material |
US7450520B2 (en) * | 2003-02-14 | 2008-11-11 | Nortel Networks Limited | Remote interface for a network device in the physical plant |
JP2004312622A (en) * | 2003-04-10 | 2004-11-04 | Alps Electric Co Ltd | Converter for satellite broadcasting reception |
US20050059365A1 (en) * | 2003-09-15 | 2005-03-17 | Higgins Sidney Arch | Mounting bracket for a radio frequency communications device |
US7017405B2 (en) * | 2003-12-22 | 2006-03-28 | The Goodyear Tire & Rubber Company | System and method for post-cure application of electronics to a tire |
US7742787B2 (en) * | 2005-04-25 | 2010-06-22 | Medtronic, Inc. | Wireless data communication card with compact antenna |
TWI252608B (en) * | 2005-06-17 | 2006-04-01 | Ind Tech Res Inst | Dual-band dipole antenna |
US8077101B1 (en) * | 2006-02-07 | 2011-12-13 | Purdue Research Foundation | Trans-grade communication network |
US20080055186A1 (en) * | 2006-06-02 | 2008-03-06 | Fortson Frederick O | Enclosures with integrated antennas that make use of the skin effect |
EP2111671B1 (en) * | 2006-10-09 | 2017-09-06 | Advanced Digital Broadcast S.A. | Dielectric antenna device for wireless communications |
US8258977B1 (en) * | 2007-11-27 | 2012-09-04 | EmNet, LLC | Manhole cover with signal transmitter |
ITBO20080274A1 (en) * | 2008-04-30 | 2009-11-01 | Ocem Spa | SYSTEM FOR DETECTION OF THE POSITION OF AIRCRAFT AND / OR VEHICLES ALONG THE TRACKS AND AIRPORTS |
FR2947102B1 (en) * | 2009-06-19 | 2012-01-13 | Suez Environnement | GSM ANTENNA, ESPECIALLY FOR EQUIPMENT USING THE PUBLIC NETWORK |
CN102714350A (en) * | 2009-11-19 | 2012-10-03 | 海德罗尼克斯有限责任公司 | Ruggedized antenna system and method |
EP2637494A4 (en) * | 2010-11-08 | 2018-02-21 | Pandeb Holdings Pty Ltd | An irrigation system |
WO2014120556A1 (en) * | 2013-01-29 | 2014-08-07 | Schlumberger Canada Limited | Wireless communication and telemetry for completions |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2563243A (en) * | 1949-05-10 | 1951-08-07 | Joseph N Marks | Indoor television antenna |
US3961332A (en) * | 1975-07-24 | 1976-06-01 | Middlemark Marvin P | Elongated television receiving antenna for indoor use |
US5168279A (en) * | 1991-06-12 | 1992-12-01 | Hewlett-Packard Company | Antenna for sensing stray rf radiation |
US6310586B1 (en) * | 2000-03-02 | 2001-10-30 | Alps Electric Co., Ltd. | Wideband antenna mountable in vehicle cabin |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2627026A (en) * | 1945-04-23 | 1953-01-27 | Standard Telephones Cables Ltd | High altitude antenna |
US5196846A (en) * | 1980-02-13 | 1993-03-23 | Brockelsby William K | Moving vehicle identification system |
JP2537390B2 (en) | 1988-12-23 | 1996-09-25 | 原田工業株式会社 | Plane antenna |
US5184143A (en) | 1989-06-01 | 1993-02-02 | Motorola, Inc. | Low profile antenna |
GB9101348D0 (en) * | 1991-01-22 | 1991-03-06 | North West Water Group Plc | Communication |
JP2843459B2 (en) * | 1992-02-14 | 1999-01-06 | 三菱電機株式会社 | Information communication system |
US5298894A (en) | 1992-06-17 | 1994-03-29 | Badger Meter, Inc. | Utility meter transponder/antenna assembly for underground installations |
JP2790975B2 (en) | 1993-09-24 | 1998-08-27 | 関西電力株式会社 | Transmission equipment used for monitoring of human holes |
JPH0897630A (en) * | 1994-09-21 | 1996-04-12 | Funai Denki Kenkyusho:Kk | Antenna for communication with mobile object |
DE19646100A1 (en) | 1996-11-08 | 1998-05-14 | Fuba Automotive Gmbh | Flat antenna |
US5877703A (en) * | 1997-08-12 | 1999-03-02 | Badger Meter, Inc. | Utility meter transmitter assembly for subsurface installations |
US6037912A (en) | 1998-09-22 | 2000-03-14 | Allen Telecom Inc. | Low profile bi-directional antenna |
JP2001090096A (en) * | 1999-09-21 | 2001-04-03 | Hitachi Zosen Corp | Manhole cover apparatus |
US6518933B2 (en) * | 2001-05-30 | 2003-02-11 | Ads Corporation | Low profile antenna |
US6825813B2 (en) * | 2003-02-07 | 2004-11-30 | Ads Corporation | Deformable antenna assembly for mounting in gaps and crevices |
-
2001
- 2001-05-30 US US09/870,232 patent/US6518933B2/en not_active Expired - Fee Related
-
2002
- 2002-05-30 EP EP02737247A patent/EP1391006A4/en not_active Withdrawn
- 2002-05-30 WO PCT/US2002/016919 patent/WO2002097918A1/en not_active Application Discontinuation
- 2002-05-30 CA CA002448568A patent/CA2448568A1/en not_active Abandoned
-
2003
- 2003-11-26 US US10/721,254 patent/US20060176231A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2563243A (en) * | 1949-05-10 | 1951-08-07 | Joseph N Marks | Indoor television antenna |
US3961332A (en) * | 1975-07-24 | 1976-06-01 | Middlemark Marvin P | Elongated television receiving antenna for indoor use |
US5168279A (en) * | 1991-06-12 | 1992-12-01 | Hewlett-Packard Company | Antenna for sensing stray rf radiation |
US6310586B1 (en) * | 2000-03-02 | 2001-10-30 | Alps Electric Co., Ltd. | Wideband antenna mountable in vehicle cabin |
Non-Patent Citations (1)
Title |
---|
See also references of EP1391006A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004073109A2 (en) * | 2003-02-07 | 2004-08-26 | Ads Corporation | Deformable antenna assembly for mounting in gaps and crevices |
WO2004073109A3 (en) * | 2003-02-07 | 2004-12-16 | Ads Corp | Deformable antenna assembly for mounting in gaps and crevices |
Also Published As
Publication number | Publication date |
---|---|
EP1391006A4 (en) | 2005-01-26 |
US6518933B2 (en) | 2003-02-11 |
US20060176231A1 (en) | 2006-08-10 |
CA2448568A1 (en) | 2002-12-05 |
EP1391006A1 (en) | 2004-02-25 |
US20020180656A1 (en) | 2002-12-05 |
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