JPS5776935A - Tuner - Google Patents
TunerInfo
- Publication number
- JPS5776935A JPS5776935A JP15291680A JP15291680A JPS5776935A JP S5776935 A JPS5776935 A JP S5776935A JP 15291680 A JP15291680 A JP 15291680A JP 15291680 A JP15291680 A JP 15291680A JP S5776935 A JPS5776935 A JP S5776935A
- Authority
- JP
- Japan
- Prior art keywords
- vhf
- output
- switching
- uhf
- mixer
- 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.)
- Granted
Links
Classifications
-
- 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
- H03J5/24—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
- H03J5/246—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 a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection using electronic means
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Superheterodyne Receivers (AREA)
- Noise Elimination (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
PURPOSE:To simplify the constitution with less interference, by channel selection of a TV electromagnetic wave signal including VHF and UHF bands by the use of common mixer circuit and local oscillation circuit and by setting an IF frequency higher than the TV electromagnetic wave signal frequency. CONSTITUTION:Signals of low, medium and high band in VHF are received at an antenna 40 and an UHF signal are received at an antenna 41, and BPFs 42, 43 are switched with an output of a tuning voltage generator 31 to a common local oscillator 24 for tuned for band separation. After PIN variable attenuators 44, 45 operated as AGC, the output is amplified at amplifiers 46, 47 and inputted to a common mixer 23. The output of the mixer 23 is outputted via a surface acoustic wave BPF25. In this case, the switching of VHF/UHF systems can be made with a switching circuit of PIN switch or the like and with the switching of the power supply voltage to an RF amplifier.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15291680A JPS5776935A (en) | 1980-10-29 | 1980-10-29 | Tuner |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15291680A JPS5776935A (en) | 1980-10-29 | 1980-10-29 | Tuner |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5776935A true JPS5776935A (en) | 1982-05-14 |
JPH0116061B2 JPH0116061B2 (en) | 1989-03-22 |
Family
ID=15550943
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15291680A Granted JPS5776935A (en) | 1980-10-29 | 1980-10-29 | Tuner |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5776935A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61161830A (en) * | 1985-01-11 | 1986-07-22 | Sony Corp | Band switching circuit |
JPH0249239U (en) * | 1988-09-30 | 1990-04-05 | ||
JPH0678227A (en) * | 1990-06-21 | 1994-03-18 | Samsung Electron Co Ltd | Method and apparatus for reception of broadcasting signal |
KR100423406B1 (en) * | 2001-12-14 | 2004-03-18 | 삼성전기주식회사 | Switching circuit for rf amplification in television tuner |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110492891B (en) * | 2016-08-31 | 2021-08-27 | 华为技术有限公司 | Receiver and wireless communication device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5388511A (en) * | 1977-01-13 | 1978-08-04 | Sony Corp | Tuner |
JPS5418208A (en) * | 1977-07-05 | 1979-02-10 | Texas Instruments Inc | Channel selector |
JPS5590142A (en) * | 1978-12-27 | 1980-07-08 | Matsushita Electric Ind Co Ltd | Broad-band receiver circuit |
-
1980
- 1980-10-29 JP JP15291680A patent/JPS5776935A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5388511A (en) * | 1977-01-13 | 1978-08-04 | Sony Corp | Tuner |
JPS5418208A (en) * | 1977-07-05 | 1979-02-10 | Texas Instruments Inc | Channel selector |
JPS5590142A (en) * | 1978-12-27 | 1980-07-08 | Matsushita Electric Ind Co Ltd | Broad-band receiver circuit |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61161830A (en) * | 1985-01-11 | 1986-07-22 | Sony Corp | Band switching circuit |
JPH0249239U (en) * | 1988-09-30 | 1990-04-05 | ||
JPH0678227A (en) * | 1990-06-21 | 1994-03-18 | Samsung Electron Co Ltd | Method and apparatus for reception of broadcasting signal |
KR100423406B1 (en) * | 2001-12-14 | 2004-03-18 | 삼성전기주식회사 | Switching circuit for rf amplification in television tuner |
Also Published As
Publication number | Publication date |
---|---|
JPH0116061B2 (en) | 1989-03-22 |
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