FI89845B - Koppling foer alstring av saendningssignal i en radiotelefon - Google Patents

Koppling foer alstring av saendningssignal i en radiotelefon Download PDF

Info

Publication number
FI89845B
FI89845B FI914181A FI914181A FI89845B FI 89845 B FI89845 B FI 89845B FI 914181 A FI914181 A FI 914181A FI 914181 A FI914181 A FI 914181A FI 89845 B FI89845 B FI 89845B
Authority
FI
Finland
Prior art keywords
dds
frequency
output
signal
receiver
Prior art date
Application number
FI914181A
Other languages
English (en)
Finnish (fi)
Other versions
FI914181A0 (fi
FI89845C (sv
FI914181A (fi
Inventor
Jarmo Juhani Heinonen
Original Assignee
Nokia Mobile Phones Ltd
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 Nokia Mobile Phones Ltd filed Critical Nokia Mobile Phones Ltd
Priority to FI914181A priority Critical patent/FI89845C/sv
Publication of FI914181A0 publication Critical patent/FI914181A0/fi
Priority to US07/934,927 priority patent/US5301367A/en
Priority to DE69223373T priority patent/DE69223373T2/de
Priority to EP92307770A priority patent/EP0535800B1/en
Priority to JP23594392A priority patent/JP3200184B2/ja
Publication of FI914181A publication Critical patent/FI914181A/fi
Application granted granted Critical
Publication of FI89845B publication Critical patent/FI89845B/fi
Publication of FI89845C publication Critical patent/FI89845C/sv

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • 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
    • H04B1/403—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency
    • H04B1/405—Circuits using the same oscillator for generating both the transmitter frequency and the receiver local oscillator frequency with multiple discrete channels

Claims (3)

1. Koppling för bildandet av en sändarsignal i en radioen- het i oiikä radiotelefonsystem omfattar en DDS-krets (3) (DDS, Direct Digital Synthesis), till en av vars ingängsan-slutningar har en modulerande signal anslutits och frän vars utgängsanslutning en modulerad mellanfrekvenssignal förs ut, . 30 och i vilken radioenhet en mottagen radioirekvenssignal blandas med en lokaloscillatorfrekvens som alstrats av en PLL-syntetiseringskrets (1) i mottagaren, kanne -tecknad av att utgängen frän mottagarens synte-tiseringskrets (1) har anslutits tili DDS-kretsens ingängs-35 anslutning för en referensfrekvens, varvid DDS-kretsens re-ferensfrekvens är densamma som mottagarens referensfrekvens. S 9 8 4 5
2. Koppiing enligt patentkravet 1, kännetecknad av att utgängssignalen frän mottagarens syntetisator och utgängssignalen frän DDS har anslutits tili en mixer (4), frän vars utgäng sändarens utfrekvens förs ut. 5
3. Koppiing enligt patentkravet 2, kännetecknad av att utgängsanslutningen av DDS (3) har anslutits tili en multiplikator (5), vars utgäng har kopplats tili mixern (4), varvid utgängsfrekvensen av DDS höjes för att vara lampiig 10 för blandningen.
FI914181A 1991-09-04 1991-09-04 Koppling för alstring av sändningssignal i en radiotelefon FI89845C (sv)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FI914181A FI89845C (sv) 1991-09-04 1991-09-04 Koppling för alstring av sändningssignal i en radiotelefon
US07/934,927 US5301367A (en) 1991-09-04 1992-08-25 Direct digital synthesizer for producing a modulated intermediate frequency in a radio apparatus
DE69223373T DE69223373T2 (de) 1991-09-04 1992-08-26 Universeller Synthesizer für ein Funkgerät
EP92307770A EP0535800B1 (en) 1991-09-04 1992-08-26 General-purpose synthesizer for a radio apparatus
JP23594392A JP3200184B2 (ja) 1991-09-04 1992-09-03 無線装置用のシンセサイザ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI914181A FI89845C (sv) 1991-09-04 1991-09-04 Koppling för alstring av sändningssignal i en radiotelefon
FI914181 1991-09-04

Publications (4)

Publication Number Publication Date
FI914181A0 FI914181A0 (fi) 1991-09-04
FI914181A FI914181A (fi) 1993-03-05
FI89845B true FI89845B (fi) 1993-08-13
FI89845C FI89845C (sv) 1993-11-25

Family

ID=8533075

Family Applications (1)

Application Number Title Priority Date Filing Date
FI914181A FI89845C (sv) 1991-09-04 1991-09-04 Koppling för alstring av sändningssignal i en radiotelefon

Country Status (5)

Country Link
US (1) US5301367A (sv)
EP (1) EP0535800B1 (sv)
JP (1) JP3200184B2 (sv)
DE (1) DE69223373T2 (sv)
FI (1) FI89845C (sv)

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FI89845C (sv) * 1991-09-04 1993-11-25 Nokia Mobile Phones Ltd Koppling för alstring av sändningssignal i en radiotelefon
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FI105247B (sv) * 1994-11-14 2000-06-30 Nokia Mobile Phones Ltd Förfarande och koppling för alstring frekvenser i en radiotelefon
FI98330C (sv) 1994-12-15 1997-05-26 Nokia Mobile Phones Ltd UHF-syntetisator
FI98420C (sv) * 1995-01-24 1997-06-10 Nokia Mobile Phones Ltd Förfarande och koppling att alstra en modulerad signal i en sändare/mottagare
KR960038686A (ko) * 1995-04-13 1996-11-21 김광호 단일 주파수에 의한 신호 송수신회로
FI951918A (sv) * 1995-04-21 1996-10-22 Nokia Mobile Phones Ltd Sändar-mottagaranordning och förfarande för alstring och behandling av en komplex I/Q-signal
FI101505B1 (sv) * 1995-05-10 1998-06-30 Nokia Mobile Phones Ltd Förfarande för förbättring av effektmätning genom en riktkopplare vid låga effektnivåer
US5995812A (en) * 1995-09-01 1999-11-30 Hughes Electronics Corporation VSAT frequency source using direct digital synthesizer
US6097765A (en) * 1995-09-05 2000-08-01 Hughes Electronics Corporation Method and apparatus for performing digital fractional minimum shift key modulation for a very small aperture terminal
FI100285B (sv) * 1995-12-11 1997-10-31 Nokia Mobile Phones Ltd Frekvensbildningskrets
FI106328B (sv) 1996-02-08 2001-01-15 Nokia Mobile Phones Ltd Förfarande och kretsanordning för att behandla en mottagen signal
FI104924B (sv) * 1996-02-29 2000-04-28 Nokia Mobile Phones Ltd En sändare-mottagare med växelbar frekvensband och bandbredd
GB2311194B (en) * 1996-03-12 2000-05-31 Nokia Mobile Phones Ltd Transmitting and receiving radio signals
FI961143A (sv) * 1996-03-12 1997-09-13 Nokia Mobile Phones Ltd Förfarande och kretsanordning för behandling av mottagna signaler i ett kommunikationssystem
US5787362A (en) * 1996-07-08 1998-07-28 Nokia Mobile Phones Limited AM removal from FM signal generated by IQ modulator
US5768691A (en) * 1996-08-07 1998-06-16 Nokia Mobile Phones Limited Antenna switching circuits for radio telephones
US5794159A (en) * 1996-08-07 1998-08-11 Nokia Mobile Phones Limited Dual band mobile station employing cross-connected transmitter and receiver circuits
US5784413A (en) * 1996-09-06 1998-07-21 General Instrument Corporation Direct digital synthesis frequency-agile QPSK modulator
GB2320633B (en) * 1996-12-17 2000-12-27 Motorola Gmbh Frequency generating circuit and method of operation
GB2320629B (en) * 1996-12-23 2001-04-25 Nokia Mobile Phones Ltd A radio transmitter and phase locked loop therefor
GB2320632B (en) * 1996-12-23 2001-09-05 Nokia Mobile Phones Ltd Method and apparatus for transmitting and receiving signals
GB2320631B (en) 1996-12-23 2001-07-18 Nokia Mobile Phones Ltd Radio receiver and radio transmitter
DE19700249A1 (de) * 1997-01-07 1998-07-09 Helmut Meier Vorrichtung für die Erzeugung und/oder den Empfang eines modulierten Funksignals
FI108486B (sv) * 1997-01-31 2002-01-31 Nokia Corp F÷rfarande och kretsanordning f÷r behandling av mottagna signaler i ett kommunikationssystem
US5974305A (en) 1997-05-15 1999-10-26 Nokia Mobile Phones Limited Dual band architectures for mobile stations
US6125266A (en) * 1997-12-31 2000-09-26 Nokia Mobile Phones Limited Dual band architectures for mobile stations having transmitter linearization feedback
US6321075B1 (en) * 1998-07-30 2001-11-20 Qualcomm Incorporated Hardware-efficient transceiver with delta-sigma digital-to-analog converter
CN1133283C (zh) * 1999-03-12 2003-12-31 西门子公司 发射接收机
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US7003049B2 (en) * 2001-06-12 2006-02-21 Rf Micro Devices, Inc. Fractional-N digital modulation with analog IQ interface
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US6693468B2 (en) 2001-06-12 2004-02-17 Rf Micro Devices, Inc. Fractional-N synthesizer with improved noise performance
US6779010B2 (en) 2001-06-12 2004-08-17 Rf Micro Devices, Inc. Accumulator with programmable full-scale range
JP2003110434A (ja) * 2001-09-28 2003-04-11 Alps Electric Co Ltd 送信レベル設定方法
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US20040121747A1 (en) * 2002-12-24 2004-06-24 Sy-Kang Shen Kit of a local oscillator of an airborne VHF multimode communication transceiver
TWI452836B (zh) * 2004-04-01 2014-09-11 St Ericsson Sa 正交電壓控制振盪器系統與方法
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US7933561B2 (en) * 2006-12-11 2011-04-26 Apple Inc. Wireless communications circuitry with simultaneous receive capabilities for handheld electronic devices
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GB2459312A (en) * 2008-04-19 2009-10-21 Peter Henry Saul Non-Heterodyne Frequency Converter which uses a Direct Digital Synthesiser
US10387691B2 (en) 2014-02-10 2019-08-20 Clairvoyant Technology Llc Polar transmitter for an RFID reader
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Also Published As

Publication number Publication date
EP0535800A2 (en) 1993-04-07
DE69223373D1 (de) 1998-01-15
FI914181A0 (fi) 1991-09-04
JP3200184B2 (ja) 2001-08-20
DE69223373T2 (de) 1998-04-09
FI89845C (sv) 1993-11-25
EP0535800A3 (en) 1993-08-11
FI914181A (fi) 1993-03-05
EP0535800B1 (en) 1997-12-03
JPH07235838A (ja) 1995-09-05
US5301367A (en) 1994-04-05

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