AR013913A1 - Un metodo y un aparato para reducir campos magneticos en radio-telefonos - Google Patents

Un metodo y un aparato para reducir campos magneticos en radio-telefonos

Info

Publication number
AR013913A1
AR013913A1 ARP980101243A ARP980101243A AR013913A1 AR 013913 A1 AR013913 A1 AR 013913A1 AR P980101243 A ARP980101243 A AR P980101243A AR P980101243 A ARP980101243 A AR P980101243A AR 013913 A1 AR013913 A1 AR 013913A1
Authority
AR
Argentina
Prior art keywords
magnetic field
transmitter
battery
radio
magnetic fields
Prior art date
Application number
ARP980101243A
Other languages
English (en)
Original Assignee
Ericsson Inc
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 Ericsson Inc filed Critical Ericsson Inc
Publication of AR013913A1 publication Critical patent/AR013913A1/es

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
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
    • H04R25/554—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired using a wireless connection, e.g. between microphone and amplifier or using Tcoils
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/33—Aspects relating to adaptation of the battery voltage, e.g. its regulation, increase or decrease
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/55—Communication between hearing aids and external devices via a network for data exchange
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2499/00—Aspects covered by H04R or H04S not otherwise provided for in their subgroups
    • H04R2499/10—General applications
    • H04R2499/11—Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • General Health & Medical Sciences (AREA)
  • Acoustics & Sound (AREA)
  • Health & Medical Sciences (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transceivers (AREA)
  • Near-Field Transmission Systems (AREA)
  • Prostheses (AREA)
  • Catching Or Destruction (AREA)

Abstract

Un método y aparato novedosos para reducir el efecto que las emisiones de campo magnético provenientes de un radio teléfono puede tener sobredispositivos sensibles a campos magnéticos variables en el tiempo. La variacion del campo magnético es suavizada por el agregado de un capacitor quetiene una constante de tiempo significativametne mayor que el marco de tiempo TDMA y que es conectado en paralelo con el transmisor. Además, se genera uncampo magnético equilibrante por medio de unlazo de cancelacion de campo conectado en serie con el transmisor y que hace que fluya corrienteen untrayecto aproximadamente opuesto al trayecto por el cual fluye la corriente a través de la batería, en un plano sustancialmente paralelo. Lacorriente quefluye a través del lazo de cancelacion de campo genera un campo magnético aproximadamente coaxial con y de polaridad opuesta al campo magnético generadopor la corriente que fluye a través de la batería y parcialmente contrarrestaa este ultimo. La utilizacion del método y el aparato resulta en una reduccion dela magnitud efectiva del campo magnético variable en el tiempo fuera del teléfono.
ARP980101243A 1997-04-03 1998-03-19 Un metodo y un aparato para reducir campos magneticos en radio-telefonos AR013913A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/832,491 US5960346A (en) 1997-04-03 1997-04-03 Apparatus and method for reducing magnetic fields in radio telephones

Publications (1)

Publication Number Publication Date
AR013913A1 true AR013913A1 (es) 2001-01-31

Family

ID=25261808

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP980101243A AR013913A1 (es) 1997-04-03 1998-03-19 Un metodo y un aparato para reducir campos magneticos en radio-telefonos

Country Status (14)

Country Link
US (1) US5960346A (es)
EP (2) EP1349290A1 (es)
JP (1) JP2001519100A (es)
KR (1) KR100393236B1 (es)
CN (2) CN1105428C (es)
AR (1) AR013913A1 (es)
AU (1) AU741191B2 (es)
BR (1) BR9809024A (es)
DE (1) DE69831061D1 (es)
EE (1) EE9900459A (es)
HK (1) HK1025849A1 (es)
MY (1) MY120981A (es)
TR (2) TR199902431T2 (es)
WO (1) WO1998044648A1 (es)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7787647B2 (en) 1997-01-13 2010-08-31 Micro Ear Technology, Inc. Portable system for programming hearing aids
US6813490B1 (en) * 1999-12-17 2004-11-02 Nokia Corporation Mobile station with audio signal adaptation to hearing characteristics of the user
WO2001054458A2 (en) 2000-01-20 2001-07-26 Starkey Laboratories, Inc. Hearing aid systems
US7012810B2 (en) * 2000-09-20 2006-03-14 Ballard Power Systems Corporation Leadframe-based module DC bus design to reduce module inductance
US20030003864A1 (en) * 2001-06-28 2003-01-02 Antony Locke Cover for a mobile telephone handset
US7280808B2 (en) * 2004-04-12 2007-10-09 Sony Ericsson Mobile Communications, Ab Wireless communications devices including circuit substrates with partially overlapping conductors thereon coupling power to/from power amplifier systems
JP2006050054A (ja) * 2004-08-02 2006-02-16 Matsushita Electric Ind Co Ltd 無線電話装置およびその消費電流制御方法
CA2601662A1 (en) 2006-09-18 2008-03-18 Matthias Mullenborn Wireless interface for programming hearing assistance devices
US8541117B2 (en) * 2009-11-11 2013-09-24 Blackberry Limited Low noise battery with a magnetic compensation structure for wireless mobile communication device
GB2524720A (en) * 2014-02-21 2015-10-07 Trust Battery Ireland Ltd Recordal of potential harmful radiation
EP4210446A1 (en) * 2020-09-11 2023-07-12 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Circuit structure, battery, electronic device, and battery manufacturing method
CN213343218U (zh) * 2020-09-11 2021-06-01 Oppo广东移动通信有限公司 电路结构、电池及电子设备
CN213150851U (zh) * 2020-09-16 2021-05-07 常州微宙电子科技有限公司 降低电磁辐射的锂离子电池

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8914888D0 (en) * 1989-06-29 1989-08-23 Ferranti Creditphone Burst mode transmitter/receiver unit
US5126688A (en) * 1990-03-20 1992-06-30 Oki Electric Co., Ltd. Power amplifying apparatus for wireless transmitter
EP0561257B1 (de) * 1992-03-20 1996-10-23 Siemens Aktiengesellschaft Schaltungsanordnung zur Überbrückung von kurzzeitigen Spannungsabfällen in batteriegespeisten Funkgeräten
EP0674400B1 (de) * 1994-03-24 1999-06-23 Siemens Aktiengesellschaft Funkgerät
US5842115A (en) * 1996-01-25 1998-11-24 Ericsson Inc. Time-duplex wireless telephone with improved hearing-aid compatibility

Also Published As

Publication number Publication date
BR9809024A (pt) 2000-08-01
CN1105428C (zh) 2003-04-09
MY120981A (en) 2005-12-30
AU741191B2 (en) 2001-11-22
KR20010005988A (ko) 2001-01-15
JP2001519100A (ja) 2001-10-16
KR100393236B1 (ko) 2003-07-31
HK1025849A1 (en) 2000-11-24
EP0972354A1 (en) 2000-01-19
CN1251703A (zh) 2000-04-26
AU6773398A (en) 1998-10-22
EP0972354B1 (en) 2005-08-03
DE69831061D1 (de) 2005-09-08
CN1427550A (zh) 2003-07-02
WO1998044648A1 (en) 1998-10-08
US5960346A (en) 1999-09-28
EE9900459A (et) 2000-06-15
TR199902431T2 (xx) 2000-03-21
EP1349290A1 (en) 2003-10-01
TR200001155T2 (tr) 2000-08-21

Similar Documents

Publication Publication Date Title
AR013913A1 (es) Un metodo y un aparato para reducir campos magneticos en radio-telefonos
TW200503395A (en) Power supply device
DK1096972T3 (da) Behandling der anvender orienteret unidirektionelt DC magnetfelt
EA201070665A1 (ru) Схемные устройства для управления бытовым прибором
TW200707154A (en) Method and apparatus for current limitation in voltage regulators with improved circuitry for providing a control voltage
TW200501570A (en) Noise filter and electronic apparatus having the same
TW200642232A (en) DC power supply device for manpower driven vehicle
SE9000554D0 (sv) Seriekondensatorutrustning
DE60204960D1 (de) Schaltung zur signalverarbeitung
EP1130769A3 (en) Feed-forward compensation scheme for feedback circuits
ATE421145T1 (de) Aktive abschirmung für eine schaltung mit magnetisch empfindlichen materialien
AR025513A2 (es) Un metodo para modificar emisiones de campo magnetico de radio telefono, y un radio telefono en el cual se implementa dicho metodo
GB0412406D0 (en) Low voltage mixer
WO2020236209A1 (en) Pulse width signal overlap compensation techniques
CN107421524A (zh) 一种石英晶体振荡驱动电路及其单片集成电路
KR20020086892A (ko) 모스펫의 1/에프 잡음을 감소시키는 회로 배치 및 그 방법
ES2081786T1 (es) Aparato medidor de potencia.
TW200630771A (en) Early effect canceling circuit, differential amplifier, linear regulator, and early effect canceling method
Guo et al. Digitally‐assisted constant‐on‐time dynamic‐biasing technique for bandwidth and slew‐rate enhancement in ultra‐low‐power low‐dropout regulator
RU2282309C1 (ru) Устройство маскировки электромагнитных каналов утечки речевых сигналов звукоусилительной аппаратуры
CN103823500B (zh) 一种调压装置、集成电路以及电子设备
CN104270113B (zh) 一种快速低功耗晶振起振电路
TW200744295A (en) Voltage regulator having current canceling compensation
CN205178994U (zh) 一种运算放大器动态供电电路
DE50201842D1 (de) Frequenzregelschaltung

Legal Events

Date Code Title Description
FB Suspension of granting procedure