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WO2002037603A1 - Structure d'une antenne - Google Patents

Structure d'une antenne Download PDF

Info

Publication number
WO2002037603A1
WO2002037603A1 PCT/SE2001/002438 SE0102438W WO0237603A1 WO 2002037603 A1 WO2002037603 A1 WO 2002037603A1 SE 0102438 W SE0102438 W SE 0102438W WO 0237603 A1 WO0237603 A1 WO 0237603A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
ground plane
carrier
antenna element
antenna arrangement
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.)
Ceased
Application number
PCT/SE2001/002438
Other languages
English (en)
Inventor
Jari Paananen
Gunnar Engblom
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AVANTEGO AB
Original Assignee
AVANTEGO AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from SE0004077A external-priority patent/SE0004077D0/xx
Application filed by AVANTEGO AB filed Critical AVANTEGO AB
Priority to AU2002212929A priority Critical patent/AU2002212929A1/en
Publication of WO2002037603A1 publication Critical patent/WO2002037603A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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 present invention relates to a ground dependent antenna arrangement of the type that comprises a substantially planar antenna element and a ground plane distanced from said antenna element.
  • PIFAs Planar Inverted F- Antenna
  • PCB printed circuit board
  • the radiator can be made with different patterns consisting of non-conductive gaps etc, to obtain a desired electrical length, multiband or other characteristics.
  • a shielding arrangement comprising a conductive box parallel to the radiator element, in which the conductive box (together with the PCB) comprises the ground plane. It is also possible to integrate the radiator element as a part of the shielding box.
  • the design of the radiator element usually results in an insufficient distance between the radiator element and the ground plane. Moreover, the size of the radiator is usually not sufficient enough to optimise the non-conductive gap pattern.
  • the radiator is a substantive part of the antenna and affects the antenna efficiency, its design is very significant, while the length and form of the ground plane is not affected through the design of the radiator element.
  • the prior art describes a number of antennas:
  • JP11355034 considers an antenna element formed of a metallic part and a support body.
  • the metallic part is formed of a metallic board and a feeding point and a ground contact point are formed at the end parts of the metallic part.
  • the support body is formed of an insulator or a dielectric and holds the metallic part accurately in prescribed form.
  • the metallic part is fixed to the support body to form them into one body.
  • a slit whose thickness is similar to or slightly thicker than that the circuit board, is installed in the support body.
  • the antenna element is fixed to the circuit board by inserting the circuit board into the slit.
  • the feeding point and the ground contact point are connected to the feeder terminal and ground terminal of the circuit board to constitute the objective deformed inverted F antenna.
  • GB 2 345 208 A relates to a radio device comprising an antenna and a PCB.
  • the antenna is unitary structure and is edge mounted onto the PCB.
  • WO 01/299925 relates to an expansion card and an antenna structure for this expansion card for wireless data transmission.
  • the card comprises a card part to be placed inside an expansion card interface of an electronic device, and which antenna part for receiving and transmitting of signals comprises at least one electroconductive, radiating antenna plane and a ground plane arranged parallel to the same, at a distance, as well as a dielectric between said planes.
  • the antenna structure is placed in a housing part which is connected to the end of the card part and which comprises a cover structure and a bottom structure, for extending said antenna structure at least partly outside said interface, wherein the antenna plane is arranged on the side of the cover structure, the ground plane is arranged on the side of the bottom structure, and said dielectric arranged is a free clearance.
  • EP 892459 Al relates to small-sized antenna systems, especially planar antenna structures operating on several frequency bands.
  • the antenna structure comprises a radiating antenna element with at least two lips.
  • the antenna structure has two basic resonance frequencies, which are defined by the dimensions of the lips of the antenna element, gaps between them, and the other dimensions of the antenna structure.
  • the radiating antenna structure is connected to the ground plane at least at one place.
  • the radiating antenna element comprises at least two connection points, which are used for connecting the feed lines of the transmitter and receiver, and for connecting special tuning elements.
  • the resonance frequencies of the antenna structure may be adjusted by connecting the said tuning elements to the connection points and antenna feed lines so that the antenna structure is operable on more than two frequency bands.
  • the switches may be conventional semiconductor switches, such as FET switches or PIN diodes.
  • Various optionally connectable tuning element or antenna feed arrangements may be used for carrying out an antenna arrangement which may be tuned in on all reception and transmission bands of an arrangement with several frequency ranges and mobile phone systems.
  • the main object of the present invention is to introduce a ground plane dependent antenna module, which solves the problems related to known antennas,
  • the initially mentioned antenna arrangement comprises a carrier body comprising a main portion and a connection portion extending from said main portion.
  • the body is with a layer of said antenna element and a layer of ground plane.
  • the antenna is arranged to be connected at one end of a carrier by means of said connection portion and that said antenna element and ground plane extend out from said end of said carrier in a direction of a longitudinal axes of said carrier.
  • the antenna element and ground plane form a two separate planes and that the carrier between said planes.
  • the antenna element and/or ground plane is/are arranged with non-conductive gap.
  • the body is made of a plastic or dielectric material and includes a gap for distancing said antenna element and ground plane.
  • the body is substantially h-shaped with main portion and a tail portion, and that said tail portion is connected to said carrier.
  • the antenna element can extend above and under said tail portion.
  • an antenna pattern/gap may also extend above and under said tail portion.
  • Said body includes inserted layers of conductors acting as ground plane and/or antenna element. Said layers are applied through metalhstaion, plating, electrolysis, etc.
  • the ground plane can be connected to a ground plane of a communication device, which is optimised for the device and preferably covers one side of the PCB.
  • the invention also refers to a commumcation arrangement including an antenna arrangement according to the invention.
  • Fig. 1 is a schematic planar view of the antenna arrangement according to the invention provided on a carrier inside a commumcation,
  • Fig 2 is a cross-sectional view along line H-II in fig 1, and
  • Fig 3 is a cross-sectional view of a part of an antenna arrangement according to another embodiment.
  • the antenna module 10 according to the invention comprises a body 11, which can be connected to a carrier 20, which in this case is a Printed Circuit Board (PCB).
  • the PCB carries different electrical components 21.
  • the body 11 is substantially h-shaped with a main substantially U-shaped portion 12 and a tail portion 13.
  • the body is made of a plastic or dielectric material.
  • substantially h-shape is meant a structure comprising of a first plane, a portion substantially perpendicular to said first plane along the first planes longitudinal axis, and a second plane connected to said portion and substantially parallel to said first plane and covering at least part of said first plane.
  • the tail potion is the part not covered by the second plane.
  • the body 11 may also be formed substantially H-shaped.
  • the antenna elements i.e. the radiator 14 and ground plane 15 are applied onto the body 11 by metallization, plating, electrolysis etc., in a suitable and known way.
  • the tail portion 11 of the antenna module extends over the PCB 20.
  • the radiator 15 provided with a non-conductive gap 16, which provides the antenna with desired electrical length and other characteristics, known for a skilled person.
  • the gap is provided, e.g. through material exclusion.
  • the substantially U-shaped main section 12 of the antenna module is defined by distancing the radiator part from the ground plane part.
  • the antenna element and the ground plane can be interconnected, e.g. at the end of the tail portion 13.
  • the gap 22 can be empty (field with air) or a distancing dielectric material.
  • the ground plane can be applied both inside and/or outside the gap 22.
  • the ground plane is separated from the antenna element and connected to a ground plane 18 of the PCB.
  • the ground plane can be connected to a ground plane of the communication device, which is optimised for the device and preferably covers one side of the PCB.
  • the radiator as shown but not necessarily, can extend all the way over the tail portion and also under the tail portion, which can connect to a feed connection 17 of the communication device. Also, the gap pattern can follow the radiator under the tail portion.
  • the ground plane can be provided with a non-conductive gap 19 as shown in the drawings.
  • metallised carrier it is possible to insert layers 14' inside the carrier and arrange parallel or substantially perpendicular extensions of the radiator/ground planes.
  • the parallel layers can also carry patterns as described above.
  • the layers may be connected capacitivaly.
  • the branches of the antenna element and/or the ground plane, including the gaps/slits for capacitive coupling, can be formed in three dimensions, so that the gaps/slits can be build in the depth direction, e.g. two substantially parallel surfaces substantially perpendicular to remaining pattern planes or two substantially parallel surfaces parallel to the other planes. In this way, a more robust construction can be obtained.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Details Of Aerials (AREA)

Abstract

L'invention porte sur une structure (10) d'antenne liée au sol comportant un élément (14) d'antenne sensiblement plan et un plan de sol (15) distant dudit élément. Ledit élément comprend un corps porteur (11) comportant une partie principale et une partie (13) de raccordement en partant. La partie principale comporte à son tour deux couches: l'une constituée par l'élément d'antenne (14) et l'autre par le plan de sol (15). L'antenne est conçue pour être raccordée à l'une des extrémités du support (20) par la partie de raccordement de manière à ce que ledit élément et le plan de sol s'étendent à partir dudit support (20) dans la direction de l'un de ses axes longitudinaux.
PCT/SE2001/002438 2000-11-06 2001-11-06 Structure d'une antenne Ceased WO2002037603A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002212929A AU2002212929A1 (en) 2000-11-06 2001-11-06 Antenna arrangement

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US24624900P 2000-11-06 2000-11-06
SE0004077A SE0004077D0 (sv) 2000-11-06 2000-11-06 Antenna arrangement
SE0004077-4 2000-11-06
US60/246,249 2000-11-06

Publications (1)

Publication Number Publication Date
WO2002037603A1 true WO2002037603A1 (fr) 2002-05-10

Family

ID=26655295

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002438 Ceased WO2002037603A1 (fr) 2000-11-06 2001-11-06 Structure d'une antenne

Country Status (2)

Country Link
AU (1) AU2002212929A1 (fr)
WO (1) WO2002037603A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003071629A1 (fr) * 2002-02-21 2003-08-28 Telefonaktiebolaget Lm Ericsson (Publ) Antenne integree pour dispositif mobile de telecommunications
EP1737066A1 (fr) * 2005-06-15 2006-12-27 Samsung Electronics Co., Ltd. Dispositif d'antenne pour un terminal portable
GB2449910A (en) * 2007-06-07 2008-12-10 Cameo Comm Inc Planar antenna for embedding in a circuit board of a wireless network device
US7903034B2 (en) 2005-09-19 2011-03-08 Fractus, S.A. Antenna set, portable wireless device, and use of a conductive element for tuning the ground-plane of the antenna set
WO2018144419A1 (fr) * 2017-02-01 2018-08-09 Shure Acquisition Holdings, Inc. Antenne planaire à fentes multi-bandes

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0892459A1 (fr) * 1997-07-08 1999-01-20 Nokia Mobile Phones Ltd. Structure d'antenne à double résonance pour plusieurs gammes de fréquences
JPH11355034A (ja) * 1998-06-04 1999-12-24 Nec Corp アンテナ
GB2345208A (en) * 1998-12-23 2000-06-28 Nokia Mobile Phones Ltd An antenna for edge mounting on a PCB
WO2001029925A1 (fr) * 1999-10-20 2001-04-26 Nokia Corporation Carte d'extension destinee a la transmission de donnees sans fil et structure d'antenne destinee a celle-ci

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0892459A1 (fr) * 1997-07-08 1999-01-20 Nokia Mobile Phones Ltd. Structure d'antenne à double résonance pour plusieurs gammes de fréquences
JPH11355034A (ja) * 1998-06-04 1999-12-24 Nec Corp アンテナ
GB2345208A (en) * 1998-12-23 2000-06-28 Nokia Mobile Phones Ltd An antenna for edge mounting on a PCB
WO2001029925A1 (fr) * 1999-10-20 2001-04-26 Nokia Corporation Carte d'extension destinee a la transmission de donnees sans fil et structure d'antenne destinee a celle-ci

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN *

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003071629A1 (fr) * 2002-02-21 2003-08-28 Telefonaktiebolaget Lm Ericsson (Publ) Antenne integree pour dispositif mobile de telecommunications
US6879849B2 (en) 2002-02-21 2005-04-12 Telefonaktiebolaget L M Ericsson (Publ) In-built antenna for mobile communication device
EP1737066A1 (fr) * 2005-06-15 2006-12-27 Samsung Electronics Co., Ltd. Dispositif d'antenne pour un terminal portable
US7656354B2 (en) 2005-06-15 2010-02-02 Samsung Electronics Co., Ltd Antenna apparatus for portable terminal
US7903034B2 (en) 2005-09-19 2011-03-08 Fractus, S.A. Antenna set, portable wireless device, and use of a conductive element for tuning the ground-plane of the antenna set
US8138981B2 (en) 2005-09-19 2012-03-20 Fractus, S.A. Antenna set, portable wireless device, and use of a conductive element for tuning the ground-plane of the antenna set
GB2449910A (en) * 2007-06-07 2008-12-10 Cameo Comm Inc Planar antenna for embedding in a circuit board of a wireless network device
GB2449910B (en) * 2007-06-07 2009-08-26 Cameo Comm Inc Antenna and wireless network device having the same
WO2018144419A1 (fr) * 2017-02-01 2018-08-09 Shure Acquisition Holdings, Inc. Antenne planaire à fentes multi-bandes
CN110326158A (zh) * 2017-02-01 2019-10-11 舒尔获得控股公司 多带槽式平面天线
US10522915B2 (en) 2017-02-01 2019-12-31 Shure Acquisition Holdings, Inc. Multi-band slotted planar antenna

Also Published As

Publication number Publication date
AU2002212929A1 (en) 2002-05-15

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