EP2332211A1 - Antenna unit and wireless transmission and/or receiving unit - Google Patents

Antenna unit and wireless transmission and/or receiving unit

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Withdrawn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)
French (fr)
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/en
Withdrawn legal-status Critical Current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

An antenna unit comprising an antenna element (122) and at least one high-dielectric supplemental element (123) is provided, said supplemental element being disposed near the antenna element (122).

Description

Antenneneinheit und Drahtlos-Sende- und/oder Empfangseinheit Antenna unit and wireless transmitting and / or receiving unit
Die vorliegende Erfindung betrifft eine Antenneneinheit sowie eine Drahtlos-Sende- und/oder EmpfangseinheitThe present invention relates to an antenna unit and a wireless transmitting and / or receiving unit
Bei drahtlosen Sende- und/oder Empfangseinheiten, welche eine Antenne zum drahtlosen Senden und Empfangen aufweisen, kann es in einem korpernahen Einsatzbereich dazu kommen, dass die Resonanzfrequenz der Antenne durch die Nahe zum Korper oder durch eine Veränderung der Relation zwischen der Antenne und einem Korper teilweise stark verstimmt wird Dies kann beispielsweise eine Funkfelddampfung bewirken, so dass die Antennenperformance reduziert wird Dieses Problem tritt verstärkt in Geraten auf, welchen lediglich ein geringer Platz zur Verfugung stehtIn wireless transmitting and / or receiving units, which have an antenna for wireless transmission and reception, it may happen in a close-fitting application area that the resonance frequency of the antenna by the proximity to the body or by a change in the relation between the antenna and a body This can, for example, cause a radio field evaporation, so that the antenna performance is reduced. This problem occurs increasingly in devices that only a small space is available
Bei bekannten Antenneneinheiten wird typischerweise eine großflächige Antennenaus- fuhrung vorgesehen, um eine Verstimmung der Resonanzfrequenz der Antenne zu reduzieren Bei einer derartigen großflächigen Ausfuhrung der Antenne kann es jedoch dazu kommen, dass die Antenne aufgrund ihres großen Durchmessers nicht mehr unmittelbar von dem Gehäuse einer Drahtlos-Sende und/oder Empfangseinheit (z B ein Mikrofongriff) unterschieden werden kann Dies kann dazu fuhren, dass nicht das Gehäuse, sondern die Antenne umfasst und somit gedampft wirdIn the case of known antenna units, a large-area antenna output is typically provided in order to reduce detuning of the resonant frequency of the antenna. However, with such a large-area antenna design, 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
Es ist somit eine Aufgabe der vorliegenden Erfindung, eine Antenneneinheit sowie eine Drahtlos-Sende- und/oder Empfangseinheit vorzusehen, welche weniger empfindlich hinsichtlich einer Verstimmung der Resonanzfrequenz sindIt is therefore an object of the present invention to provide an antenna unit and a wireless transmitting and / or receiving unit, which are less sensitive to a detuning of the resonant frequency
Diese Aufgabe wird durch eine Antenneneinheit gemäß Anspruch 1 sowie durch einen Drahtios-Sender und/oder -Empfanger gemäß Anspruch 4 gelost Somit wird eine Antenneneinheit mit einem Antennenelement und mindestens einem hochdielektrischen Zusatzelement vorgesehen, welches in der Nahe des Antennenelementes angeordnet wirdThis object is achieved by an antenna unit according to claim 1 and by a wireless transmitter and / or receiver according to claim 4 Thus, 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
Gemäß einem weiteren Aspekt der vorliegenden Erfindung weist das hochdielektrische Zusatzelement einen Dielektrizitätskonstanten von 0 bis 100 aufAccording to another aspect of the present invention, the high dielectric additive element has a dielectric constant of 0 to 100
Gemäß einem weiteren Aspekt der vorliegenden Erfindung ist der Abstand zwischen dem Antennenelement und dem hochdielektπschen Zusatzelement 0 bis 5 mm und vorzugsweise 0 bis 3 mmAccording to a further aspect of the present invention, the distance between the antenna element and the high dielektπschen additional element 0 to 5 mm and preferably 0 to 3 mm
Die Erfindung betrifft ebenfalls eine Drahtlos-Sende- und/oder Empfangseinheit mit einer oben beschriebenen Antenneneinheit Die Drahtlos-Sende- und/oder Empfangseinheit kann beispielsweise als ein Drahtlosmikrofon ausgestaltet seinThe 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
Die Erfindung betrifft den Gedanken, hochdielektrische verlustarme Materialien in der Nahe der Antenne zu platzieren Somit wird eine Antenneneinheit vorgesehen, welche durch das hochdielektrische Material in der Nahe der Antenne von vornherein verstimmt ist Je naher das dielektrische Material an der Antenne angeordnet ist, desto besser die WirkungThe invention relates to the idea of placing high-dielectric low-loss materials in the vicinity of the antenna. Thus, 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
Der Erfindung liegt die Erkenntnis zu Grunde, dass Antennen von Mikrofonsendern und/oder -empfangern üblicherweise verkürzt aufgebaut sind, da die Dimensionen der Mikrofonsender und/oder -empfanger begrenzt sind Die Verkürzung der Antenne kann durch eine aufgewickelte oder maandrierte metallische Struktur erfolgen Alternativ bzw zusatzlich dazu kann eine große Dachkapazitat ausgebildet werden Alternativ dazu kann eine dielektrische Verkürzung der Antennengeometrie ermöglicht werden Dies stellt jedoch keine bevorzugte Losung dar, weil die Drahtlos-Mikrofone typischerweise in einem weiten Frequenzbereich betrieben werden sollen und eine Vielzahl von unterschiedlichen Antennen entwickelt worden sindThe 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. However, 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
Hierbei sei jedoch darauf hingewiesen, dass die antenneneigene Resonanzfrequenz verstimmt wird, wenn zusätzliche Materialien (wie beispielsweise eine Hand, ein Korper, feuchte Kleidung, ein Stuhl oder ein Sessel) an die Antenneneinheit angenähert wird Dies fuhrt zu einer weiteren elektromagnetischen Dampfung Dies hat wiederum zur Folge, dass die reflektierte HF Leistung am Antennenfußpunkt erhöht wird Weitere Ausgestaltungen der Erfindung sind Gegenstand der UnteransprucheIt should be noted, however, that 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
Ausfuhrungsbeispiele und Vorteile der Erfindung werden nachstehend unter Bezugnahme auf die Zeichnung naher erläutertExemplary embodiments and advantages of the invention will be explained in more detail below with reference to the drawing
Fig 1 zeigt eine schematische Darstellung eines Drahtlos-Mikrofons mit einer erfindungsgemaßen Antenneneinheit1 shows a schematic representation of a wireless microphone with an antenna unit according to the invention
Fig 1 zeigt eine schematische Darstellung eines Drahtlos-Mikrofones mit einer erfindungsgemaßen Antenneneinheit Das Drahtlos-Mikrofon 100 weist einen Mikrofon köpf 1 10 an seinem ersten Ende 101 und eine Antenneneinheit 120 an dem zweiten Ende 102 auf Innerhalb des Drahtlos-Mikrofons ist eine Senderleiterplatte 130 vorgesehen, welche über ein Ende 131 mit einem Ende 121 der Antenneneinheit 120 gekoppelt ist Die An- tenneneinheit 120 weist neben dem Antennenelement 122 ein oder mehrere (hoch-) dielektrische Zusatzelemente 123 auf1 shows a schematic illustration 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
Durch die Anordnung der hochdielektrischen Zusatzelemente 123 in der Nahe des Antennenelementes 122 erfolgt ein Einfluss des Zusatzelementes 123 auf die Resonanzfre- quenz der Antenne Dieser Einfluss wird verbessert, je dichter das Zusatzelement an der Antenneneinheit angeordnet ist Wenn nun z B menschliches Gewebe mit einer relativen Dielektrizitätskonstante von ca 80 sich in der Nahe der Antenneneinheit 120 befindet, dann wurde das menschliche Gewebe einen deutlich geringeren Einfluss auf die Resonanzfrequenz der Antenneneinheit 120 haben als durch das Zusatzelement 123By 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
Das Antennenelement 122 kann beispielsweise als eine Struktur auf einer Polyimidfolie, auf einem Leiterplattenmaterial FR4 oder als Spule ausgeführt werden Die Antenne wird hierbei durch eine unmittelbare Nahe eines Dielektrikums, welches von der Antenne unabhängig ist, elektrisch verlängertThe 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
Um unterschiedliche Frequenzbereiche zu erreichen, muss, abgesehen von unterschied- liehen Leiterplatten für die Antennenelemente, lediglich ein dielektrisches Zusatzelement verwendet werdenIn order to achieve different frequency ranges, apart from different borrowed circuit boards for the antenna elements, only one additional dielectric element must be used
Wenn ferner die mechanische Ausfuhrung eines Schutzabstandes zwischen der Antenne und dem Gehäuse optimiert wird, dann kann die Frequenzverschiebung der Antenne reduziert werden Dies kann insbesondere zu geringeren Feldstarkeeinbruchen bei der Berührung der Antenneneinheit fuhrenFurther, if the mechanical performance of a guard distance between the antenna and the housing is optimized, then the frequency shift of the antenna This can in particular lead to lower field strength collisions when the antenna unit is touched
Die mechanische Verkürzung der Antenne kann somit mittels des zusatzlichen hochdie- lektπschen Zusatzelementes 123 erfolgen Zusatzlich bzw alternativ dazu kann eine weitere Maandπerung oder Aufwicklung der metallischen Struktur erfolgenThe 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
Das hoch-dielektrische Element 120 kann einen Dielektπzitatskoeffizienten von 0 - 100 aufweisenThe high-dielectric element 120 may have a dielectric constant of 0-100
Der Abstand zwischen Antennenelement 122 und Zusatzelement 123 kann zwischen 0 - 5 mm oder zwischen 0 - 3 mm betragenThe distance between antenna element 122 and additional element 123 may be between 0 - 5 mm or between 0 - 3 mm
Die oben beschriebene Antenneneinheit kann in einem Drahtlos-Mikrofon, einem Draht- los-Handsender, einem Drahtlos-Taschensender oder in einem Drahtlos-Kamerasender verwendet bzw implementiert werden 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

Claims

AnsprucheClaims
1 Antenneneinheit, mit einem Antennenelement (122) und mindestens einem hochdielektrischen Zusatzelement (123), welches in der Nahe des Antennenelementes (122) angeordnet wird1 antenna unit, with an antenna element (122) and at least one high-dielectric additional element (123), which is arranged in the vicinity of the antenna element (122)
2 Antenneneinheit nach Anspruch 1 , wobei das hochdielektrische Zusatzelement (123) einen Dielektπzitatskoeffizienten von 0-100 aufweist2 antenna unit according to claim 1, wherein the high-dielectric additive element (123) has a Dielektπzitatskoeffizienten of 0-100
3 Antenneneinheit nach Anspruch 1 oder 2, wobei der Abstand zwischen dem Antennenelement (122) und dem hochdielektrischenThe antenna unit according to claim 1 or 2, wherein the distance between the antenna element (122) and the high dielectric
Zusatzelement (123) 0-5 mm, vorzugsweise 0-3 mm betragtAdditional element (123) 0-5 mm, preferably 0-3 mm amounts
4 Drahtlos-Sende- und/oder Empfangseinheit, mit einer Antenneneinheit nach einem der Ansprüche 1 - 34 wireless transmitting and / or receiving unit, with an antenna unit according to one of claims 1-3
5 Drahtlos-Mikrofon, mit einer Antenneneinheit nach einem der Ansprüche 1 - 3 5 wireless microphone, with an antenna unit according to one of claims 1-3
EP09782457A 2008-09-01 2009-09-01 Antenna unit and wireless transmission and/or receiving unit Withdrawn EP2332211A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008045111A DE102008045111A1 (en) 2008-09-01 2008-09-01 Antenna unit and wireless transmitting and / or receiving unit
PCT/EP2009/061275 WO2010023326A1 (en) 2008-09-01 2009-09-01 Antenna unit and wireless transmission and/or receiving unit

Publications (1)

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

Family

ID=41277199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09782457A Withdrawn EP2332211A1 (en) 2008-09-01 2009-09-01 Antenna unit and wireless transmission and/or receiving unit

Country Status (5)

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

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013541913A (en) * 2010-10-12 2013-11-14 ジーエヌ リザウンド エー／エス Antenna device
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

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SE508365C2 (en) * 1996-11-04 1998-09-28 Ericsson Telefon Ab L M Radio telephone with high antenna efficiency
JP2001274717A (en) * 2000-03-24 2001-10-05 Mitsubishi Electric Corp Portable wireless device
WO2003044891A1 (en) * 2001-11-20 2003-05-30 Ube Industries, Ltd. Dielectric antenna module
DE10315744B4 (en) * 2003-04-04 2007-05-31 Sennheiser Electronic Gmbh & Co. Kg Microphone with RF transmitter
US20050157892A1 (en) * 2004-01-16 2005-07-21 Cheng-Shun Chiu Cabled & wireless dual-purpose microphone
EP2077519B1 (en) * 2006-02-22 2014-04-02 Toyo Seikan Kaisha, Ltd. RFID tag substrate for metal component
US20070242839A1 (en) * 2006-04-13 2007-10-18 Stanley Kim Remote wireless microphone system for a video camera

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Title
See references of WO2010023326A1 *

Also Published As

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

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