EP0736924A1 - Tragbarer Empfänger mit einer Antenne - Google Patents

Tragbarer Empfänger mit einer Antenne Download PDF

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Publication number
EP0736924A1
EP0736924A1 EP96200856A EP96200856A EP0736924A1 EP 0736924 A1 EP0736924 A1 EP 0736924A1 EP 96200856 A EP96200856 A EP 96200856A EP 96200856 A EP96200856 A EP 96200856A EP 0736924 A1 EP0736924 A1 EP 0736924A1
Authority
EP
European Patent Office
Prior art keywords
plates
portable receiver
receiver according
antenna
housing
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.)
Granted
Application number
EP96200856A
Other languages
English (en)
French (fr)
Other versions
EP0736924B1 (de
Inventor
Pierre Chanteau
Bram Paulus Van Sambeek
Steven Thomas Slot
Daniele Santilli
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.)
Koninklijke Philips NV
Original Assignee
Philips Electronique Gran Public
Koninklijke Philips Electronics NV
Philips Electronics NV
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
Application filed by Philips Electronique Gran Public, Koninklijke Philips Electronics NV, Philips Electronics NV filed Critical Philips Electronique Gran Public
Publication of EP0736924A1 publication Critical patent/EP0736924A1/de
Application granted granted Critical
Publication of EP0736924B1 publication Critical patent/EP0736924B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • H01Q9/28—Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having collinear axes and adjacent apices and fed by two-conductor transmission lines
    • 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

Definitions

  • the present invention relates to a portable receiver provided with an antenna for the reception of electromagnetic waves, comprising a housing in which an electronic circuit is placed.
  • Such a receiver is for example a radio receiver or a flat screen television receiver, or a flat screen teletext receiver, for example provided with a liquid crystal screen.
  • a particular antenna is known from document JP-A-56 144 645.
  • the reception diagram of a symmetrical antenna for example a so-called YAGI antenna, is itself symmetrical, with two lobes separated by two hollows, this is ie two directions of reception of waves for which the gain of the antenna is zero.
  • the arrangement described by this document uses two antennas of the so-called "butterfly" type, each made of a pair of flat and triangular strands and placed flat along two opposite insulating faces of a box of which the other four faces are metallic. , in order to obtain an invariably stable reception in all directions, and to take advantage of the presence of the metal faces to form a reflective element for the antenna.
  • An object of the invention is to obtain a perfectly omnidirectional reception diagram, with a high gain.
  • the invention is therefore based on the idea of subdividing each of the strands of a "butterfly" antenna into two parts articulated with respect to each other, and of placing the housing between the two most distant parts. one from the other, these parts then appearing as elements of the housing.
  • the omnidirectional character is improved, and in addition this arrangement makes it possible to fold the plates in front of or behind the housing, to reduce the dimensions of the receiver when it is not in use.
  • the distance, measured along the antenna plates, between the ends, the furthest from each other, of the two plates is of the order of a wavelength ⁇ of a frequency to receive.
  • the practically triangular parallel plates have an asymmetrical design with respect to a horizontal axis.
  • a parallel plate is connected to a main plate via a plate connector making an angle both with the main plate and with the connection plate.
  • the main plates and the housing advantageously have, in a direction parallel to the attachment line of a plate, practically the same maximum dimension.
  • the plates are made of plastic, and are covered with a flexible metallized sheet.
  • Such a flexible metallized sheet is capable of ensuring continuity at the level of the joints, by bending when the joint is played, or even may by itself constitute a hinge.
  • a portable receiver according to the invention is advantageously an image receiver provided with an image screen.
  • the image screen is placed between the tips of the practically triangular parallel plates.
  • Figures 1 and 2 schematically represent a receiver according to the invention, seen respectively from the front and from above.
  • Figure 3 shows a top view of a variant.
  • the portable image receiver 1 illustrated in the figures comprises a box 8 in which an electronic circuit 11-16 is placed.
  • This housing 8 which could as well have any shape, is here practically flat and rectangular. It is practically symmetrical with respect to a plane of symmetry 19 perpendicular to its large faces, and perpendicular to the plane of the drawing sheet.
  • the housing 8 is provided with an image screen 20 (FIG. 2), for example with liquid crystals, which occupies part of its large flat face which is turned downwards in the figure.
  • image screen 20 for example with liquid crystals, which occupies part of its large flat face which is turned downwards in the figure.
  • the receiver is intended for the reception of waves in the frequency range called UHF, and in particular for the reception of teletext broadcasts.
  • an antenna which comprises two plates 4 and 5, electrically conductive. These two plates are arranged on either side of the housing 8 and attached in a practically symmetrical manner with respect to this housing 8, and with respect to the plane of symmetry 19.
  • the plates 4 and 5 here form an angle, the apex of which S is behind the screen, for an observer located in front of the screen, this arrangement being visible in FIG. 2, where the planes of the plates 4, 5 are perpendicular to the drawing sheet.
  • the distance between the ends 21 and 22, the most distant from each other, of the plates 4 and 5 is of the order of a wavelength ⁇ of the central frequency of the range of frequencies to be received, measured by following the surface of the plates between points 21 and 22.
  • the antenna further comprises two plates 2, 3 called parallel which are placed parallel to the flat housing 8 and electrically and mechanically connected to the first plate 4 and to the second plate 5, respectively.
  • the liquid crystal screen 20 is located near the plates 2, 3, but it does not play the role of a ground plane, because it is not a good conductor for the frequencies in play. does it approximate a role of directing element, in the sense of this word in the yagi antennas.
  • the electronic circuit in the housing 8 is divided into several subsets 11, 12, 13, 14, 15, 16, the ground planes of which are electrically connected to each other via inductors 161, 112, 114, 134, 145.
  • the parallel plates 2 and 3 have a roughly triangular design ( Figure 1).
  • the triangles are asymmetrical, in other words they are not isosceles.
  • the point to the right of the plate 2 and the point to the left of the plate 3 in FIG. 1 are higher than the middle of the plates and of the housing. This asymmetry is not always necessary.
  • triangular plates semi-circular or semi-elliptical plates could be used without making much difference, such forms being comparable to triangular "blunt" forms.
  • An electrical link to the electronic circuit can be connected to the antenna at a point 9 near the tip of the parallel plate 2 which faces the other parallel plate 3, and at a point 10 near the tip of the plate parallel 3 which faces the other parallel plate 2.
  • an impedance adapter balun of a known type (not shown) is connected between the points 9 and 10 of the antenna, and the electrical connection to the the electronic circuit can therefore be connected at only one of the points 9 or 10.
  • the tuner connected to one of these points is for example the element 11.
  • the antenna may further comprise (FIG. 2) a connection plate 17 disposed between the plates 4 and 2 and which connects them electrically and mechanically.
  • Another electrically conductive connection plate 18 is arranged in the same way between the plates 3 and 5, which it connects mechanically and electrically.
  • the main plates 4 and 5, as well as the connection plates 17, 18 are for example rectangular and they have a height approximately equal to that of the housing.
  • the two plates 4 and 17 (or the two plates 5 and 18) can be rigidly fixed to one another. However, it is preferable to provide electrically conductive joints 6 and 7 respectively between the two adjacent plates 4 and 17 and between the two adjacent plates 5 and 18. This makes it possible to adjust the angle between the plates 4 and 17, or 5 and 18, and also to fold the plates for transporting the receiver.
  • the triangular antenna parts 2 and 3 are placed in front of the housing, on either side of the screen 20. Furthermore, the connection parts 17 and 18 are absent . Again, screen 8 could be turned up. Electrically conductive joints 6 and 7 are provided between the two adjacent plates 4 and 2 and the two adjacent plates 5 and 3 respectively.
  • the plates 17, 2 (or 18, 3) can be made of a single sheet, for example of aluminum, folded. In the case where no articulation 6 (or 7) is provided, it is even the set of plates 4, 17, 2 (or 5, 18, 3) which can be made of a single sheet folded.
  • the metal plates can be sheathed in plastic or painted to improve their appearance.
  • the plates and the joints can be made of plastic, the plates being covered with a flexible metallized sheet, for example glued to the plastic plates.
EP96200856A 1995-04-05 1996-03-28 Tragbarer Empfänger mit einer Antenne Expired - Lifetime EP0736924B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9504041 1995-04-05
FR9504041 1995-04-05

Publications (2)

Publication Number Publication Date
EP0736924A1 true EP0736924A1 (de) 1996-10-09
EP0736924B1 EP0736924B1 (de) 2002-09-04

Family

ID=9477781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96200856A Expired - Lifetime EP0736924B1 (de) 1995-04-05 1996-03-28 Tragbarer Empfänger mit einer Antenne

Country Status (4)

Country Link
US (1) US5739795A (de)
EP (1) EP0736924B1 (de)
JP (1) JPH08288728A (de)
DE (1) DE69623373T2 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7519421B2 (en) * 2001-01-16 2009-04-14 Kenergy, Inc. Vagal nerve stimulation using vascular implanted devices for treatment of atrial fibrillation
US6917833B2 (en) * 2003-09-16 2005-07-12 Kenergy, Inc. Omnidirectional antenna for wireless communication with implanted medical devices
US7003350B2 (en) * 2003-11-03 2006-02-21 Kenergy, Inc. Intravenous cardiac pacing system with wireless power supply
US20060074449A1 (en) * 2003-11-03 2006-04-06 Stephen Denker Intravascular stimulation system with wireless power supply
US20050200549A1 (en) * 2004-03-15 2005-09-15 Realtronics Corporation Optimal Tapered Band Positioning to Mitigate Flare-End Ringing of Broadband Antennas
US7295879B2 (en) * 2005-06-24 2007-11-13 Kenergy, Inc. Double helical antenna assembly for a wireless intravascular medical device
US7749265B2 (en) * 2005-10-05 2010-07-06 Kenergy, Inc. Radio frequency antenna for a wireless intravascular medical device
WO2007109076A1 (en) * 2006-03-15 2007-09-27 Cherik Bulkes Composite waveform based method and apparatus for animal tissue stimulation
US20070288076A1 (en) * 2006-06-07 2007-12-13 Cherik Bulkes Biological tissue stimulator with flexible electrode carrier
US20070288077A1 (en) * 2006-06-07 2007-12-13 Cherik Bulkes Self-anchoring electrical lead with multiple electrodes
US20070288183A1 (en) * 2006-06-07 2007-12-13 Cherik Bulkes Analog signal transition detector
US20080039904A1 (en) * 2006-08-08 2008-02-14 Cherik Bulkes Intravascular implant system
US20080077184A1 (en) * 2006-09-27 2008-03-27 Stephen Denker Intravascular Stimulation System With Wireless Power Supply
WO2008137452A1 (en) * 2007-05-04 2008-11-13 Kenergy Royalty Company, Llc Implantable high efficiency digital stimulation device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63174431A (ja) * 1987-01-14 1988-07-18 Matsushita Electric Works Ltd 可搬型衛星通信装置
US4860019A (en) * 1987-11-16 1989-08-22 Shanghai Dong Hai Military Technology Engineering Co. Planar TV receiving antenna with broad band
WO1990015452A1 (en) * 1989-05-31 1990-12-13 Kabushiki Kaisha Komatsu Seisakusho Antenna with bends
JPH05236397A (ja) * 1992-05-26 1993-09-10 Matsushita Electric Works Ltd テレビジョン受像機
EP0626764A1 (de) * 1993-05-27 1994-11-30 Nec Corporation Tragbares Gerät für Satellitenkommunikation

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020550A (en) * 1959-09-28 1962-02-06 Jerrold Electronics Corp Broadband sheet antenna
JPS56144645A (en) * 1980-04-11 1981-11-11 Matsushita Electric Ind Co Ltd Diversity antenna device for portable radio equipment
JPS59186401A (ja) * 1983-04-07 1984-10-23 Sony Corp アンテナ
DE3520983A1 (de) * 1985-06-12 1986-12-18 Robert Bosch Gmbh, 7000 Stuttgart Antenne fuer ein funksende- und -empfangsgeraet
AT393054B (de) * 1989-07-27 1991-08-12 Siemens Ag Oesterreich Sende- und/oder empfangsanordnung fuer tragbare geraete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63174431A (ja) * 1987-01-14 1988-07-18 Matsushita Electric Works Ltd 可搬型衛星通信装置
US4860019A (en) * 1987-11-16 1989-08-22 Shanghai Dong Hai Military Technology Engineering Co. Planar TV receiving antenna with broad band
WO1990015452A1 (en) * 1989-05-31 1990-12-13 Kabushiki Kaisha Komatsu Seisakusho Antenna with bends
JPH05236397A (ja) * 1992-05-26 1993-09-10 Matsushita Electric Works Ltd テレビジョン受像機
EP0626764A1 (de) * 1993-05-27 1994-11-30 Nec Corporation Tragbares Gerät für Satellitenkommunikation

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 447 (E - 685) 24 November 1988 (1988-11-24) *
PATENT ABSTRACTS OF JAPAN vol. 17, no. 695 (E - 1480) 20 December 1993 (1993-12-20) *

Also Published As

Publication number Publication date
DE69623373T2 (de) 2003-06-05
DE69623373D1 (de) 2002-10-10
US5739795A (en) 1998-04-14
EP0736924B1 (de) 2002-09-04
JPH08288728A (ja) 1996-11-01

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