KR100190604B1 - 통신포트내장형 더블컨버젼 튜너 - Google Patents
통신포트내장형 더블컨버젼 튜너 Download PDFInfo
- Publication number
- KR100190604B1 KR100190604B1 KR1019960018172A KR19960018172A KR100190604B1 KR 100190604 B1 KR100190604 B1 KR 100190604B1 KR 1019960018172 A KR1019960018172 A KR 1019960018172A KR 19960018172 A KR19960018172 A KR 19960018172A KR 100190604 B1 KR100190604 B1 KR 100190604B1
- Authority
- KR
- South Korea
- Prior art keywords
- communication
- communication port
- signal
- frequency
- conversion tuner
- Prior art date
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 30
- 238000000926 separation method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
- H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/02—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with variable tuning element having a number of predetermined settings and adjustable to a desired one of these settings
- H03J5/0245—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form
- H03J5/0272—Discontinuous tuning using an electrical variable impedance element, e.g. a voltage variable reactive diode, in which no corresponding analogue value either exists or is preset, i.e. the tuning information is only available in a digital form the digital values being used to preset a counter or a frequency divider in a phase locked loop, e.g. frequency synthesizer
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
Abstract
Description
Claims (1)
- PLL(12)방식을 적용하여 1차로 중간주파수를 생성하는 1차 주파수변환부(13)와, 1차중간주파수를 다시 2차중간주파수로 변환시키는 2차 주파수변환부(15)를 포함하는 더블컨버젼 튜너에 있어서,방송신호(S1)를 소정레벨 감쇠시키과 동시에 통신신호(S2)를 손실없이 통과시키는 신호분리용 저항(R1)과, 통신신호의 정압정재파비 개선용 매칭코일(L1)과, 소정대역의 통신신호만을 통과시키는 발룬트랜스코일(L2)과, 그리고 통신신호의 대역에 동조하는 통신대역 동조회로(C1, L3, C2, C3)로 구성되어 안테나로부터 RF 입력단을 통해서 입력되는 신호중 통신신호(S2)를 변환기의 디코더(18)로 제공하는 통신포트(21)를 내장시킨 것을 특징으로 하는 통신포트내장형 더블컨버젼 튜너.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960018172A KR100190604B1 (ko) | 1996-05-28 | 1996-05-28 | 통신포트내장형 더블컨버젼 튜너 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019960018172A KR100190604B1 (ko) | 1996-05-28 | 1996-05-28 | 통신포트내장형 더블컨버젼 튜너 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970077992A KR970077992A (ko) | 1997-12-12 |
KR100190604B1 true KR100190604B1 (ko) | 1999-06-01 |
Family
ID=19459903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019960018172A KR100190604B1 (ko) | 1996-05-28 | 1996-05-28 | 통신포트내장형 더블컨버젼 튜너 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100190604B1 (ko) |
-
1996
- 1996-05-28 KR KR1019960018172A patent/KR100190604B1/ko not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
KR970077992A (ko) | 1997-12-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4397037A (en) | Diplexer for television tuning systems | |
KR900002956B1 (ko) | 텔레비젼 수신기의 동조 시스템 | |
KR100268641B1 (ko) | 수신장치 | |
US4555809A (en) | R.F. Diplexing and multiplexing means | |
US5963842A (en) | Satellite broadcasting receiving tuner | |
JPH02295230A (ja) | 高周波信号処理装置 | |
KR920002761B1 (ko) | 다중대역 텔레비젼 수상기용 동조 시스템 | |
KR100190604B1 (ko) | 통신포트내장형 더블컨버젼 튜너 | |
KR930001194B1 (ko) | 수신장치 | |
JPH04373288A (ja) | Catv用チューナ | |
JPH05260483A (ja) | チューナユニット | |
EP1536557B1 (en) | Intermediate frequency circuit | |
JP3290594B2 (ja) | テレビジョン受信機のトラップ回路装置 | |
KR0135038Y1 (ko) | 인접채널의 특성개선을 위한 중간주파수 탱크회로 | |
JP3277527B2 (ja) | チューナ | |
JP3360364B2 (ja) | バランス出力型チューナ装置の中間周波処理回路 | |
US6070061A (en) | Adjacent channel rejection in double conversion tuner | |
US20040053593A1 (en) | Signal mixers | |
KR910008133B1 (ko) | 올밴드 수신용 단일튜너회로 | |
KR920008425Y1 (ko) | 쌍방향 catv의 광대역신호 분기장치 | |
JPH0432858Y2 (ko) | ||
JPH0362707A (ja) | 衛星放送受信用周波数変換装置 | |
KR970005651B1 (ko) | 2중 주파수 변환튜너 | |
JPS6062732A (ja) | テレビチュ−ナの混合回路 | |
JPH098679A (ja) | 高周波入力回路装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A201 | Request for examination | ||
PA0109 | Patent application |
Patent event code: PA01091R01D Comment text: Patent Application Patent event date: 19960528 |
|
PA0201 | Request for examination |
Patent event code: PA02012R01D Patent event date: 19960528 Comment text: Request for Examination of Application |
|
PG1501 | Laying open of application | ||
E902 | Notification of reason for refusal | ||
PE0902 | Notice of grounds for rejection |
Comment text: Notification of reason for refusal Patent event date: 19980828 Patent event code: PE09021S01D |
|
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: 19981130 |
|
GRNT | Written decision to grant | ||
PR0701 | Registration of establishment |
Comment text: Registration of Establishment Patent event date: 19990121 Patent event code: PR07011E01D |
|
PR1002 | Payment of registration fee |
Payment date: 19990122 End annual number: 3 Start annual number: 1 |
|
PG1601 | Publication of registration | ||
FPAY | Annual fee payment |
Payment date: 20020103 Year of fee payment: 4 |
|
PR1001 | Payment of annual fee |
Payment date: 20020103 Start annual number: 4 End annual number: 4 |
|
LAPS | Lapse due to unpaid annual fee | ||
PC1903 | Unpaid annual fee |
Termination category: Default of registration fee Termination date: 20031011 |