KR0171753B1 - 디지탈 위성방송용 튜너 - Google Patents
디지탈 위성방송용 튜너 Download PDFInfo
- Publication number
- KR0171753B1 KR0171753B1 KR1019950028347A KR19950028347A KR0171753B1 KR 0171753 B1 KR0171753 B1 KR 0171753B1 KR 1019950028347 A KR1019950028347 A KR 1019950028347A KR 19950028347 A KR19950028347 A KR 19950028347A KR 0171753 B1 KR0171753 B1 KR 0171753B1
- Authority
- KR
- South Korea
- Prior art keywords
- signal
- frequency
- output
- outputting
- local oscillator
- 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.)
- Expired - Fee Related
Links
- 230000010355 oscillation Effects 0.000 claims abstract description 36
- 238000010897 surface acoustic wave method Methods 0.000 claims abstract description 15
- 238000010586 diagram Methods 0.000 description 4
- 230000005236 sound signal Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/18—Arrangements characterised by circuits or components specially adapted for receiving
- H04H40/27—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
- H04H40/90—Arrangements characterised by circuits or components specially adapted for receiving specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95 specially adapted for satellite broadcast receiving
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/65—Arrangements characterised by transmission systems for broadcast
- H04H20/71—Wireless systems
- H04H20/74—Wireless systems of satellite networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Multimedia (AREA)
- Superheterodyne Receivers (AREA)
Abstract
Description
Claims (1)
- 제 2 주파수 혼합기(20)와 중간주파수증폭기(22) 및 표면탄성파필터(24)를 통해 출력된 제 2 중간주파수를 복조하여 I 신호와 Q신호를 출력하는 디지탈 위성방송용 튜너에 있어서, 자동이득제어신호에 따라 발진주파수를 출력하는 제 3 국부발진기(40)와; 상기 표면탄성파필터(24)를 통해 출력된 제 2 중간주파수신호와 상기 제 3 국부발진기(40)에서 출력된 발진주파수를 혼합하여 기저대역의 I 신호를 출력하는 제3 주파수혼합기(42) 및; 상기 제 3 주파수혼합기(42)에서 출력된 기저대역의 I 신호를 90도 만큼 위상을 변화시켜 Q 신호를 출력하는 위상시프터(44)를 포함하여 구성된 것을 특징으로 하는 디지탈 위성방송용 튜너.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950028347A KR0171753B1 (ko) | 1995-08-31 | 1995-08-31 | 디지탈 위성방송용 튜너 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950028347A KR0171753B1 (ko) | 1995-08-31 | 1995-08-31 | 디지탈 위성방송용 튜너 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970014336A KR970014336A (ko) | 1997-03-29 |
KR0171753B1 true KR0171753B1 (ko) | 1999-03-20 |
Family
ID=19425706
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950028347A Expired - Fee Related KR0171753B1 (ko) | 1995-08-31 | 1995-08-31 | 디지탈 위성방송용 튜너 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR0171753B1 (ko) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100438541B1 (ko) * | 2001-09-11 | 2004-07-03 | 엘지전자 주식회사 | 이동통신 기지국의 송신신호 장치 |
-
1995
- 1995-08-31 KR KR1019950028347A patent/KR0171753B1/ko not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100438541B1 (ko) * | 2001-09-11 | 2004-07-03 | 엘지전자 주식회사 | 이동통신 기지국의 송신신호 장치 |
Also Published As
Publication number | Publication date |
---|---|
KR970014336A (ko) | 1997-03-29 |
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A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19950831 |
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PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19950831 Comment text: Request for Examination of Application |
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PG1501 | Laying open of application | ||
E701 | Decision to grant or registration of patent right | ||
PE0701 | Decision of registration |
Patent event code: PE07011S01D Comment text: Decision to Grant Registration Patent event date: 19980721 |
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Comment text: Registration of Establishment Patent event date: 19981021 Patent event code: PR07011E01D |
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