KR20010066436A - 주파수천이키잉 변복조 수행 무선통신기기의 송수신 장치 - Google Patents
주파수천이키잉 변복조 수행 무선통신기기의 송수신 장치 Download PDFInfo
- Publication number
- KR20010066436A KR20010066436A KR1019990068154A KR19990068154A KR20010066436A KR 20010066436 A KR20010066436 A KR 20010066436A KR 1019990068154 A KR1019990068154 A KR 1019990068154A KR 19990068154 A KR19990068154 A KR 19990068154A KR 20010066436 A KR20010066436 A KR 20010066436A
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- Prior art keywords
- signal
- frequency
- divider
- divided
- output
- Prior art date
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- 230000008054 signal transmission Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 230000010355 oscillation Effects 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 9
- 238000004891 communication Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000010295 mobile communication Methods 0.000 description 3
- 230000010354 integration Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 1
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Classifications
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- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
- H03L7/089—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses
- H03L7/0891—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector generating up-down pulses the up-down pulses controlling source and sink current generators, e.g. a charge pump
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
- H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
- H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
- H03L7/1974—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
- H03L7/1976—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider
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- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
Abstract
Description
Claims (6)
- 주파수천이키잉(FSK) 계열의 복조를 수행하는 시분할듀플렉싱(TDD) 방식 무선신호 송수신 장치에 있어서,수신되어 여파 및 증폭 처리를 거친 후, 다시 이득이 적절히 조절된 신호를 일정 배수 분주하여 출력하는 제1분주기와,미리 정해진 주파수의 신호를 발진하는 전압제어발진기와,상기 발진된 주파수 신호를 일정 배수 분주하여 상기 제1분주기의 출력신호 주파수와 동일한 주파수의 신호를 출력하는 제2분주기와,상기 제1분주기로부터 분주된 신호와 상기 제2분주기로부터 분주된 신호를 복조하여 기저대역신호로 직접 변환하는 복조기를 구비하고 있음을 특징으로 하는 무선신호 송수신 장치.
- 제1항에 있어서, 상기 제1분주기는,수신 신호의 주파수 대역에 따라 적절히 정해진 소정 정수배를 분주하는 P*N분주기로 구현됨을 특징으로 하는 무선신호 송수신 장치.
- 제2항에 있어서, 상기 제2분주기는,상기 전압제어발진기로부터 출력된 신호를 N 분주하여 상기 P*N 분주기에서 분주된 신호와 같은 주파수의 신호로서 출력하는 1/N분주기로 구현됨을 특징으로 하는 무선신호 송수신 장치.
- 제1항에 있어서,상기 제2분주기에서 분주된 신호를 적절히 증폭 및 지연하여 상기 복조기로 출력하는 수신 로컬 버퍼를 더 구비하고 있음을 특징으로 하는 무선신호 송수신 장치.
- 제1항에 있어서, 상기 전압제어발진기는,무선신호의 송신에 따른 체배 대상 신호로서, 피엘엘(PLL)을 통해 변환된 기준발진주파수신호로서 동기된 주파수 신호를 더 발진함을 특징으로 하는 무선신호 송수신 장치.
- 제1항에 있어서, 상기 전압제어발진기는,무선신호의 송신에 따른 체배 대상 신호로서, 피엘엘(PLL)을 통해 변환된 기준발진주파수신호로서 동기된 주파수 신호를 더 발진함을 특징으로 하는 무선신호 송수신 장치.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1019990068154A KR100357858B1 (ko) | 1999-12-31 | 1999-12-31 | 주파수천이키잉 변복조 수행 무선통신기기의 송수신 장치 |
Applications Claiming Priority (1)
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KR1019990068154A KR100357858B1 (ko) | 1999-12-31 | 1999-12-31 | 주파수천이키잉 변복조 수행 무선통신기기의 송수신 장치 |
Publications (2)
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KR20010066436A true KR20010066436A (ko) | 2001-07-11 |
KR100357858B1 KR100357858B1 (ko) | 2002-10-25 |
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KR1019990068154A KR100357858B1 (ko) | 1999-12-31 | 1999-12-31 | 주파수천이키잉 변복조 수행 무선통신기기의 송수신 장치 |
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KR (1) | KR100357858B1 (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100588383B1 (ko) * | 2004-05-12 | 2006-06-12 | 주식회사 이트로닉스 | 에프에스케이를 이용한 중계기 동기화 시스템 및 그 방법 |
KR100722766B1 (ko) * | 2006-01-18 | 2007-05-30 | 포스데이타 주식회사 | 무선 통신 시스템에서 tdd를 위한 발진 신호의 출력불량을 검출하는 장치 및 방법 |
-
1999
- 1999-12-31 KR KR1019990068154A patent/KR100357858B1/ko not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100588383B1 (ko) * | 2004-05-12 | 2006-06-12 | 주식회사 이트로닉스 | 에프에스케이를 이용한 중계기 동기화 시스템 및 그 방법 |
KR100722766B1 (ko) * | 2006-01-18 | 2007-05-30 | 포스데이타 주식회사 | 무선 통신 시스템에서 tdd를 위한 발진 신호의 출력불량을 검출하는 장치 및 방법 |
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KR100357858B1 (ko) | 2002-10-25 |
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