ATE189567T1 - Steuervorrichtungen für digitale funkempfänger - Google Patents
Steuervorrichtungen für digitale funkempfängerInfo
- Publication number
- ATE189567T1 ATE189567T1 AT94307720T AT94307720T ATE189567T1 AT E189567 T1 ATE189567 T1 AT E189567T1 AT 94307720 T AT94307720 T AT 94307720T AT 94307720 T AT94307720 T AT 94307720T AT E189567 T1 ATE189567 T1 AT E189567T1
- Authority
- AT
- Austria
- Prior art keywords
- digital radio
- control devices
- radio receiver
- frequency
- data transmission
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
- H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
- H04L25/065—Binary decisions
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
-
- 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
- H04B1/06—Receivers
- H04B1/16—Circuits
- H04B1/26—Circuits for superheterodyne receivers
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/142—Compensating direct current components occurring during the demodulation and which are caused by mistuning
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/148—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using filters, including PLL-type filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
- H04L27/14—Demodulator circuits; Receiver circuits
- H04L27/144—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements
- H04L27/152—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements
- H04L27/1525—Demodulator circuits; Receiver circuits with demodulation using spectral properties of the received signal, e.g. by using frequency selective- or frequency sensitive elements using controlled oscillators, e.g. PLL arrangements using quadrature demodulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Power Engineering (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Circuits Of Receivers In General (AREA)
- Selective Calling Equipment (AREA)
- Superheterodyne Receivers (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB939322181A GB9322181D0 (en) | 1993-10-28 | 1993-10-28 | Frequency control for digital radio |
GB9400762A GB9400762D0 (en) | 1994-01-17 | 1994-01-17 | Frequency control for digital radio |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE189567T1 true ATE189567T1 (de) | 2000-02-15 |
Family
ID=26303755
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT94307720T ATE189567T1 (de) | 1993-10-28 | 1994-10-20 | Steuervorrichtungen für digitale funkempfänger |
Country Status (6)
Country | Link |
---|---|
US (1) | US5663989A (de) |
EP (1) | EP0651520B1 (de) |
JP (1) | JPH07202958A (de) |
AT (1) | ATE189567T1 (de) |
CA (1) | CA2134531A1 (de) |
DE (1) | DE69422882T2 (de) |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2311194B (en) * | 1996-03-12 | 2000-05-31 | Nokia Mobile Phones Ltd | Transmitting and receiving radio signals |
US5761259A (en) * | 1996-05-24 | 1998-06-02 | International Business Machines Corporation | Apparatus, method and article of manufacture for carrier frequency compensation in a FM radio |
US5751114A (en) * | 1996-05-24 | 1998-05-12 | International Business Machines Corporation | Apparatus, method and article of manufacture for carrier frequency compensation in a FM radio transmitter |
JP3226807B2 (ja) * | 1996-11-20 | 2001-11-05 | 静岡日本電気株式会社 | 無線呼出システム用の自動周波数補正装置および自動周波数補正方法 |
JPH10164152A (ja) * | 1996-11-29 | 1998-06-19 | General Res Of Electron Inc | Fsk受信機用中心誤差検出回路 |
FI112569B (fi) | 1997-05-13 | 2003-12-15 | Nokia Corp | Optinen add/drop-laite |
GB2330279B (en) | 1997-10-07 | 1999-09-22 | Ramar Technology Ltd | Low power density radio systems |
GB2335809B (en) * | 1998-03-24 | 2001-09-12 | Ericsson Telefon Ab L M | Demodulator circuits |
ES2142754B1 (es) * | 1998-04-17 | 2000-11-16 | Iglesias Angel Sa | Demodulador para señales moduladas en frecuencia de alta ganancia de demodulacion. |
US6690740B1 (en) * | 1998-08-19 | 2004-02-10 | Telefonaktiebolaget L M Ericsson | Methods and apparatus for providing robust synchronization of radio transceivers |
US7076217B1 (en) | 1999-11-23 | 2006-07-11 | Micro Linear Corporation | Integrated radio transceiver |
US7027792B1 (en) | 1999-11-23 | 2006-04-11 | Micro Linear Corporation | Topology for a single ended input dual balanced mixer |
US6987816B1 (en) * | 1999-11-23 | 2006-01-17 | Micro Linear Corporation | Iris data recovery algorithms |
US6985541B1 (en) | 1999-11-23 | 2006-01-10 | Micor Linear Corporation | FM demodulator for a low IF receiver |
US8107562B2 (en) * | 2007-12-14 | 2012-01-31 | Silicon Laboratories Inc. | Combining soft decisions in a weather band radio |
US8045656B2 (en) * | 2007-12-14 | 2011-10-25 | Silicon Laboratories Inc. | Weather band radio having digital frequency control |
US9641073B2 (en) * | 2015-09-04 | 2017-05-02 | Qualcomm Incorporated | Start up method for switching converters using the same reference voltage in the error amplifier and PWM comparator |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4544894A (en) * | 1983-03-23 | 1985-10-01 | Nec Corporation | DC Voltage control circuits |
JPS63161718A (ja) * | 1986-12-24 | 1988-07-05 | Matsushita Electric Ind Co Ltd | 選局装置 |
US4873702A (en) * | 1988-10-20 | 1989-10-10 | Chiu Ran Fun | Method and apparatus for DC restoration in digital receivers |
US5053717A (en) * | 1989-10-05 | 1991-10-01 | Motorola, Inc. | FSK demodulator |
JPH03220823A (ja) * | 1990-01-25 | 1991-09-30 | Japan Radio Co Ltd | ダイレクトコンバージョン受信機 |
US5109544A (en) * | 1990-11-05 | 1992-04-28 | Motorola, Inc. | Paging receiver with automatic frequency control |
JPH04192702A (ja) * | 1990-11-27 | 1992-07-10 | Toshiba Corp | 復調回路 |
-
1994
- 1994-10-18 US US08/324,910 patent/US5663989A/en not_active Expired - Lifetime
- 1994-10-20 EP EP94307720A patent/EP0651520B1/de not_active Expired - Lifetime
- 1994-10-20 AT AT94307720T patent/ATE189567T1/de not_active IP Right Cessation
- 1994-10-20 DE DE69422882T patent/DE69422882T2/de not_active Expired - Fee Related
- 1994-10-25 JP JP6284225A patent/JPH07202958A/ja active Pending
- 1994-10-27 CA CA002134531A patent/CA2134531A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
EP0651520A2 (de) | 1995-05-03 |
JPH07202958A (ja) | 1995-08-04 |
DE69422882T2 (de) | 2000-10-12 |
DE69422882D1 (de) | 2000-03-09 |
EP0651520A3 (de) | 1995-12-13 |
EP0651520B1 (de) | 2000-02-02 |
CA2134531A1 (en) | 1995-04-29 |
US5663989A (en) | 1997-09-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |