EP1616396A1 - Mikrofon mit hf-sender - Google Patents

Mikrofon mit hf-sender

Info

Publication number
EP1616396A1
EP1616396A1 EP04723979A EP04723979A EP1616396A1 EP 1616396 A1 EP1616396 A1 EP 1616396A1 EP 04723979 A EP04723979 A EP 04723979A EP 04723979 A EP04723979 A EP 04723979A EP 1616396 A1 EP1616396 A1 EP 1616396A1
Authority
EP
European Patent Office
Prior art keywords
antenna
circulator
isolator
wireless microphone
transmitter
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Withdrawn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
EP04723979A
Other languages
German (de)
English (en)
French (fr)
Inventor
Matthias Fehr
Wolfgang Niehoff
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 EP1616396A1 publication Critical patent/EP1616396A1/de
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0458—Arrangements for matching and coupling between power amplifier and antenna or between amplifying stages
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/088—Quick-releasable antenna elements
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection

Definitions

  • the invention relates to a wireless microphone system.
  • the object of the present invention is to further develop such wireless microphone systems.
  • the invention also aims to improve the intermodulation distance of RF transmitters so that more transmitters can be used in the same frequency band.
  • the invention is not limited to wireless microphone systems alone, but includes all RF transmitters with a removable antenna.
  • it must be pointed out that it is already known to permanently install HF circulators, isolators or filters in HF transmitters or wireless microphones, which have to be exchanged accordingly when the frequency changes. It is obvious that this exchange is very complex and often also leads to difficult technical problems.
  • the antenna or the antennas of the wireless systems according to the invention have a circulator / RF isolator permanently assigned to them or are connected to such a circulator / RF isolator, this circulator / RF isolator then also being used in the transmission or receiving device itself can be accommodated.
  • a particular advantage is, however, if an antenna can be plugged into the transmitting or receiving device and the circulator / HF isolator is also integrated in the antenna. Then the entire antenna is pre-tuned to a desired area and does not need to be adjusted again later.
  • the antenna is electrically and mechanically connected to the circulator / HF isolator and this unit antenna-circulator / HF isolator as complete assembly is replaceable. The same applies to reception facilities.
  • a circulator / RF isolator regularly has a low transmission loss in the transmission or reception direction and a high blocking loss in the opposite direction of the transmission or reception.
  • the impedance at the input of the circulator / HF insulator is constant and independent of the impedance of subsequent components. In the case of transmission devices, this ensures that the transmission amplifier can operate in a constant operating range. For example, if the antenna is touched - and thus detuned - it becomes one less reaction on the transmitter amplifier or the entire transmitter device occur.
  • a major advantage of decoupling the antenna from the transmitter amplifier by means of a circulator / RF isolator is that two adjacent transmitters only have a slight influence on one another; intermodulation between the transmitters is greatly reduced. This allows multiple transmitter microphones to work together in a narrower frequency range without interference. The frequency economy is improved. In the opposite case, the tuning range in which the transmitters are supposed to work can be enlarged with the same technical properties (intermodulation products).
  • each wireless microphone can be assigned the optimal antenna combination assigned to the respective operating frequency range. This applies not only to newly installed wireless microphone systems, but in particular also to systems that are already in operation. By retrofitting wireless microphone systems that are in operation, their interference from adjacent-channel transmitter systems operated in the same system can be significantly reduced. Additional wireless microphones can then be operated in the same frequency range; this increases the frequency economy considerably. This is particularly important with wireless microphone systems with many microphones, for example on theater / musical stages.
  • the use of circulators is also important if you want to operate antennas with different directional characteristics on the specified transmitter amplifier of a wireless microphone, for example with linear polarization or circular polarization.
  • the circulator / HF isolator enables a high level of decoupling from the transmitter amplifier and thus ensures an optimal working range.
  • the solution according to the invention enables optimal coordination of both components through the mechanical unit of antenna and circulator / HF isolator.
  • the pluggable / exchangeable unit antenna Circulator / RF isolator easily and easily the frequency range and / or the antenna characteristics can be adjusted.
  • handheld transmitter microphones There are two versions of handheld transmitter microphones (handheld transmitters): handheld transmitters with a permanently connected or plugged-in antenna and designs with an antenna integrated in the housing. For attached antennas, the same applies as for the bodypack transmitters just described.
  • handheld microphones with an antenna integrated in the housing an embodiment is expedient in which the antenna and the circulator / HF isolator are mechanically housed together in a separate common housing. This is then exchanged when the frequency changes.
  • the receiver sensitivity or the (receiver) intermodulation distance can be improved by switching on a circulator / RF isolator in the radio frequency branch of the receiver.
  • more receivers can be operated in an existing frequency range, which fits the above-mentioned operation of more transmitters by using the circulators / RF isolators in the transmitter output. Frequency economy can also be improved here.
  • the user With the solution according to the invention of the pluggable / exchangeable mechanical unit of (receiving) antenna circulator / HF isolator, the user only has to replace the antenna circulator / HF isolator unit in addition to the frequency change in the receiver. This results in a quick and uncomplicated adjustment in the current operating case.
  • the above statements apply including the pocket receivers customary in wireless microphone systems, such as those used for translation in talk shows or for musicians as so-called in-ear monitor systems.
  • several wireless systems can be operated in the same frequency range by the solution according to the invention by reducing the intermodulation by the antenna circulator / RF isolator unit.
  • FIG. 1 shows the top view of an HF transmitter with a circulator (HF isolator) housed in an antenna;
  • FIG. 2 shows the top view of a microphone with an antenna, a circulator and / or an HF isolator being accommodated in the antenna, so that the respective frequency band can be easily adjusted by replacing the antenna.
  • the antenna with a label on the outside, this label being assigned to the respective frequency range of the circulator and / or the circulator unit.
  • the marking can consist, for example, of a coding or also of a color code, so that even from a certain distance it is very good for the person skilled in the art, in this case a sound engineer or sound engineer it can be seen to which frequency the RF transmitter of the wireless microphone is tuned or working.
  • the circulator or RF isolator can be designed with means for tuning in order to tune it to a specific frequency range or frequency response if necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Transmitters (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Transceivers (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Near-Field Transmission Systems (AREA)
EP04723979A 2003-04-04 2004-03-29 Mikrofon mit hf-sender Withdrawn EP1616396A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10315744A DE10315744B4 (de) 2003-04-04 2003-04-04 Mikrofon mit HF-Sender
PCT/EP2004/003298 WO2004088873A1 (de) 2003-04-04 2004-03-29 Mikrofon mit hf-sender

Publications (1)

Publication Number Publication Date
EP1616396A1 true EP1616396A1 (de) 2006-01-18

Family

ID=33103236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04723979A Withdrawn EP1616396A1 (de) 2003-04-04 2004-03-29 Mikrofon mit hf-sender

Country Status (7)

Country Link
US (1) US20070025567A1 (enExample)
EP (1) EP1616396A1 (enExample)
JP (1) JP2006522516A (enExample)
CN (1) CN1771673B (enExample)
DE (1) DE10315744B4 (enExample)
RU (1) RU2005134217A (enExample)
WO (1) WO2004088873A1 (enExample)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107331953A (zh) * 2017-07-25 2017-11-07 富士高实业有限公司 一种应用短尾螺旋天线和短路ｌ形辐射器的无线耳机

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DE102008045112A1 (de) * 2008-09-01 2010-03-04 Sennheiser Electronic Gmbh & Co. Kg Mikrofon
DE102008045111A1 (de) * 2008-09-01 2010-03-04 Sennheiser Electronic Gmbh & Co. Kg Antenneneinheit und Drahtlos-Sende- und/oder Empfangseinheit
US8497940B2 (en) * 2010-11-16 2013-07-30 Audio-Technica U.S., Inc. High density wireless system
US10810222B2 (en) 2014-11-24 2020-10-20 Asana, Inc. Continuously scrollable calendar user interface
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US10977434B2 (en) 2017-07-11 2021-04-13 Asana, Inc. Database model which provides management of custom fields and methods and apparatus therfor
US10623359B1 (en) 2018-02-28 2020-04-14 Asana, Inc. Systems and methods for generating tasks based on chat sessions between users of a collaboration environment
US11138021B1 (en) 2018-04-02 2021-10-05 Asana, Inc. Systems and methods to facilitate task-specific workspaces for a collaboration work management platform
US10613735B1 (en) 2018-04-04 2020-04-07 Asana, Inc. Systems and methods for preloading an amount of content based on user scrolling
US10785046B1 (en) 2018-06-08 2020-09-22 Asana, Inc. Systems and methods for providing a collaboration work management platform that facilitates differentiation between users in an overarching group and one or more subsets of individual users
US10616151B1 (en) 2018-10-17 2020-04-07 Asana, Inc. Systems and methods for generating and presenting graphical user interfaces
US10956845B1 (en) 2018-12-06 2021-03-23 Asana, Inc. Systems and methods for generating prioritization models and predicting workflow prioritizations
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US11783253B1 (en) 2020-02-11 2023-10-10 Asana, Inc. Systems and methods to effectuate sets of automated actions outside and/or within a collaboration environment based on trigger events occurring outside and/or within the collaboration environment
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US11769115B1 (en) 2020-11-23 2023-09-26 Asana, Inc. Systems and methods to provide measures of user workload when generating units of work based on chat sessions between users of a collaboration environment
US11405435B1 (en) 2020-12-02 2022-08-02 Asana, Inc. Systems and methods to present views of records in chat sessions between users of a collaboration environment
US11694162B1 (en) 2021-04-01 2023-07-04 Asana, Inc. Systems and methods to recommend templates for project-level graphical user interfaces within a collaboration environment
US11676107B1 (en) 2021-04-14 2023-06-13 Asana, Inc. Systems and methods to facilitate interaction with a collaboration environment based on assignment of project-level roles
US11553045B1 (en) 2021-04-29 2023-01-10 Asana, Inc. Systems and methods to automatically update status of projects within a collaboration environment
US11803814B1 (en) 2021-05-07 2023-10-31 Asana, Inc. Systems and methods to facilitate nesting of portfolios within a collaboration environment
US11792028B1 (en) 2021-05-13 2023-10-17 Asana, Inc. Systems and methods to link meetings with units of work of a collaboration environment
US11809222B1 (en) 2021-05-24 2023-11-07 Asana, Inc. Systems and methods to generate units of work within a collaboration environment based on selection of text
US12141756B1 (en) 2021-05-24 2024-11-12 Asana, Inc. Systems and methods to generate project-level graphical user interfaces within a collaboration environment
US12093859B1 (en) 2021-06-02 2024-09-17 Asana, Inc. Systems and methods to measure and visualize workload for individual users
US12182505B1 (en) 2021-06-10 2024-12-31 Asana, Inc. Systems and methods to provide user-generated project-level graphical user interfaces within a collaboration environment
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Also Published As

Publication number Publication date
CN1771673B (zh) 2011-09-21
RU2005134217A (ru) 2006-07-10
JP2006522516A (ja) 2006-09-28
DE10315744B4 (de) 2007-05-31
US20070025567A1 (en) 2007-02-01
CN1771673A (zh) 2006-05-10
DE10315744A1 (de) 2004-11-11
WO2004088873A1 (de) 2004-10-14

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