JPS643378B2 - - Google Patents
Info
- Publication number
- JPS643378B2 JPS643378B2 JP7494680A JP7494680A JPS643378B2 JP S643378 B2 JPS643378 B2 JP S643378B2 JP 7494680 A JP7494680 A JP 7494680A JP 7494680 A JP7494680 A JP 7494680A JP S643378 B2 JPS643378 B2 JP S643378B2
- Authority
- JP
- Japan
- Prior art keywords
- signal
- tuner
- agc
- uhf
- vhf
- 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
Links
- 230000005684 electric field Effects 0.000 claims description 12
- 230000003321 amplification Effects 0.000 claims description 5
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims 3
- 238000000034 method Methods 0.000 description 24
- 238000010586 diagram Methods 0.000 description 20
- 230000006866 deterioration Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 6
- 230000010355 oscillation Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3052—Automatic control in amplifiers having semiconductor devices in bandpass amplifiers (H.F. or I.F.) or in frequency-changers used in a (super)heterodyne receiver
Landscapes
- Control Of Amplification And Gain Control (AREA)
- Superheterodyne Receivers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7494680A JPS572133A (en) | 1980-06-05 | 1980-06-05 | Tuner circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7494680A JPS572133A (en) | 1980-06-05 | 1980-06-05 | Tuner circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS572133A JPS572133A (en) | 1982-01-07 |
| JPS643378B2 true JPS643378B2 (enExample) | 1989-01-20 |
Family
ID=13561997
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7494680A Granted JPS572133A (en) | 1980-06-05 | 1980-06-05 | Tuner circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS572133A (enExample) |
-
1980
- 1980-06-05 JP JP7494680A patent/JPS572133A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS572133A (en) | 1982-01-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0829133B1 (en) | Agc circuit arrangement for a tuner | |
| US4827511A (en) | Automatic gain control circuit for controlling gain of video signal in television receiver | |
| US6434374B1 (en) | Apparatus for controlling the conversion gain of a down converter | |
| US4850038A (en) | Frequency converter | |
| KR100958179B1 (ko) | 튜너용 자동 이득 제어 | |
| CA2188080C (en) | Apparatus for controlling the conversion gain of a down converter | |
| KR100211620B1 (ko) | 텔레비젼 수상기의 fm 라디오에 사용된 고정된 제2하프-if 트랩을 갖는 제1 if 필터 | |
| KR100211411B1 (ko) | 중앙 주파수 정보의 합성으로 fm 정보 라디오를 수신하는 텔레비젼 시스템 | |
| KR910003278B1 (ko) | Rf 컨버터회로 | |
| US6864924B2 (en) | Television tuner input circuit having satisfactory selection properties at high band reception | |
| US20020070807A1 (en) | High-frequency amplifier circuit for UHF television tuner having less distortion | |
| KR100355621B1 (ko) | 룩업 테이블 및 마이크로 프로세서를 이용한 광대역 주파수 자동 채널 선택용 디지털 텔레비전 튜너 | |
| US20030181177A1 (en) | High-frequency receiver apparatus | |
| KR100246708B1 (ko) | 자동이득제어회로 | |
| US20090021650A1 (en) | Common receiver for terrestrial TV and CATV | |
| US20060205372A1 (en) | Agc circuit arrangement for a tuner | |
| JPH0269083A (ja) | Ａｇｃ回路 | |
| KR100384463B1 (ko) | 디지털 지상파 튜너의 루프쓰루 회로 | |
| US4509207A (en) | UHF RF Amplifier and AGC system | |
| KR100524178B1 (ko) | 넓은 가변 범위를 가지는 에이지씨를 구비하는 더블 컨버젼 방식의 튜너 | |
| KR100633481B1 (ko) | 아이엠디 특성 개선회로 | |
| CA1313228C (en) | Frequency converter | |
| KR100431188B1 (ko) | 튜너에서의 ｖｈｆ간섭 제거 회로 | |
| JPS645395Y2 (enExample) | ||
| JPS644714B2 (enExample) |