EP2332211A1 - Unité d antenne et unité d émission et/ou de réception sans fil - Google Patents

Unité d antenne et unité d émission et/ou de réception sans fil

Info

Publication number
EP2332211A1
EP2332211A1 EP09782457A EP09782457A EP2332211A1 EP 2332211 A1 EP2332211 A1 EP 2332211A1 EP 09782457 A EP09782457 A EP 09782457A EP 09782457 A EP09782457 A EP 09782457A EP 2332211 A1 EP2332211 A1 EP 2332211A1
Authority
EP
European Patent Office
Prior art keywords
antenna
antenna unit
unit
dielectric
wireless
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.)
Withdrawn
Application number
EP09782457A
Other languages
German (de)
English (en)
Inventor
Frank Plath
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.)
Sennheiser Electronic GmbH and Co KG
Original Assignee
Sennheiser Electronic GmbH and Co KG
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 Sennheiser Electronic GmbH and Co KG filed Critical Sennheiser Electronic GmbH and Co KG
Publication of EP2332211A1 publication Critical patent/EP2332211A1/fr
Withdrawn legal-status Critical Current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
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • 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 an antenna unit and a wireless transmitting and / or receiving unit
  • wireless transmitting and / or receiving units which have an antenna for wireless transmission and reception
  • This problem occurs increasingly in devices that only a small space is available
  • a large-area antenna output is typically provided in order to reduce detuning of the resonant frequency of the antenna.
  • the antenna because of its large diameter, can no longer be separated directly from the housing of a wireless antenna. Transmitting and / or receiving unit (eg a microphone handle) can be distinguished This can lead to the fact that not the housing, but the antenna comprises and is thus steamed
  • an antenna unit is provided with an antenna element and at least one high-dielectric additional element, which is arranged in the vicinity of the antenna element
  • the high dielectric additive element has a dielectric constant of 0 to 100
  • the distance between the antenna element and the high dielekt ⁇ schen additional element 0 to 5 mm and preferably 0 to 3 mm
  • the invention likewise relates to a wireless transmitting and / or receiving unit having an antenna unit described above.
  • the wireless transmitting and / or receiving unit can be designed, for example, as a wireless microphone
  • the invention relates to the idea of placing high-dielectric low-loss materials in the vicinity of the antenna.
  • an antenna unit is provided which is detonated in advance by the high-dielectric material near the antenna. The closer the dielectric material is arranged to the antenna, the better effect
  • the invention is based on the finding that antennas of microphone transmitters and / or receivers are usually shortened, since the dimensions of the microphone transmitters and / or receivers are limited.
  • the shortening of the antenna can be effected by a wound-up or metallized metallic structure as an alternative or in addition Alternatively, a dielectric shortening of the antenna geometry may be enabled.
  • this is not a preferred solution because the wireless microphones are typically operated in a wide frequency range and a variety of different antennas have been developed
  • the antenna's own resonance frequency is detuned when additional materials (such as a hand, a body, damp clothing, a chair or a chair) is approximated to the antenna unit. This leads to a further electromagnetic attenuation As a result, the reflected RF power at the antenna base is increased Further embodiments of the invention are the subject of the dependent claims
  • FIG. 1 shows a schematic representation of a wireless microphone with an antenna unit according to the invention
  • the wireless microphone 100 has a microphone head 1 10 at its first end 101 and an antenna unit 120 at the second end 102. Inside the wireless microphone, a transmitter circuit board 130 is provided which is coupled via an end 131 to an end 121 of the antenna unit 120.
  • the antenna unit 120 has, in addition to the antenna element 122, one or more (high) dielectric additional elements 123
  • the high-dielectric additional elements 123 By arranging the high-dielectric additional elements 123 in the vicinity of the antenna element 122, an influence of the additional element 123 on the resonant frequency of the antenna takes place. This influence is improved, the closer the additional element is arranged to the antenna unit If, for example, human tissue with a relative dielectric constant of about 80 is in the vicinity of the antenna unit 120, then the human tissue would have a significantly lower influence on the resonance frequency of the antenna unit 120 than by the additional element 123
  • the antenna element 122 may, for example, be implemented as a structure on a polyimide film, on a printed circuit board material FR4 or as a coil.
  • the antenna is hereby electrically extended by an immediate proximity of a dielectric, which is independent of the antenna
  • the frequency shift of the antenna This can in particular lead to lower field strength collisions when the antenna unit is touched
  • the mechanical shortening of the antenna can thus be effected by means of the additional high-density additional element 123. Additionally or alternatively, a further dimensioning or winding of the metallic structure can take place
  • the high-dielectric element 120 may have a dielectric constant of 0-100
  • the distance between antenna element 122 and additional element 123 may be between 0 - 5 mm or between 0 - 3 mm
  • the antenna unit described above may be used in a wireless microphone, a wireless remote control, a wireless bodypack transmitter or a wireless camera transmitter

Landscapes

  • Details Of Aerials (AREA)
  • Support Of Aerials (AREA)

Abstract

L'invention concerne une unité d'antenne dotée d'un élément d'antenne (122) et d'au moins d'un élément supplémentaire (123) hautement diélectrique, qui est disposé à proximité de l'élément d'antenne (122).
EP09782457A 2008-09-01 2009-09-01 Unité d antenne et unité d émission et/ou de réception sans fil Withdrawn EP2332211A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008045111A DE102008045111A1 (de) 2008-09-01 2008-09-01 Antenneneinheit und Drahtlos-Sende- und/oder Empfangseinheit
PCT/EP2009/061275 WO2010023326A1 (fr) 2008-09-01 2009-09-01 Unité d’antenne et unité d’émission et/ou de réception sans fil

Publications (1)

Publication Number Publication Date
EP2332211A1 true EP2332211A1 (fr) 2011-06-15

Family

ID=41277199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09782457A Withdrawn EP2332211A1 (fr) 2008-09-01 2009-09-01 Unité d antenne et unité d émission et/ou de réception sans fil

Country Status (5)

Country Link
US (1) US20110211714A1 (fr)
EP (1) EP2332211A1 (fr)
CN (1) CN102138250A (fr)
DE (1) DE102008045111A1 (fr)
WO (1) WO2010023326A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2628210B1 (fr) * 2010-10-12 2019-01-09 GN Hearing A/S Prothese auditive comprenant un dispositif d'antenne
US10985447B2 (en) 2013-08-02 2021-04-20 Gn Hearing A/S Antenna device
US10230159B2 (en) 2015-11-20 2019-03-12 Shure Acquisition Holdings, Inc. Helical antenna for wireless microphone and method for the same
US10230153B2 (en) 2016-06-20 2019-03-12 Shure Acquisition Holdings, Inc. Secondary antenna for wireless microphone

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE508365C2 (sv) * 1996-11-04 1998-09-28 Ericsson Telefon Ab L M Radiotelefon med hög antenneffektivitet
JP2001274717A (ja) * 2000-03-24 2001-10-05 Mitsubishi Electric Corp 携帯無線機
WO2003044891A1 (fr) * 2001-11-20 2003-05-30 Ube Industries, Ltd. Module d'antenne dielectrique
DE10315744B4 (de) * 2003-04-04 2007-05-31 Sennheiser Electronic Gmbh & Co. Kg Mikrofon mit HF-Sender
US20050157892A1 (en) * 2004-01-16 2005-07-21 Cheng-Shun Chiu Cabled & wireless dual-purpose microphone
EP2690586B1 (fr) * 2006-02-22 2017-07-19 Toyo Seikan Kaisha, Ltd. Substrat d'étiquette RFID pour composant métallique
US20070242839A1 (en) * 2006-04-13 2007-10-18 Stanley Kim Remote wireless microphone system for a video camera

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010023326A1 *

Also Published As

Publication number Publication date
CN102138250A (zh) 2011-07-27
WO2010023326A1 (fr) 2010-03-04
DE102008045111A1 (de) 2010-03-04
US20110211714A1 (en) 2011-09-01

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