JPS5596705A - Receiving unit - Google Patents

Receiving unit

Info

Publication number
JPS5596705A
JPS5596705A JP451579A JP451579A JPS5596705A JP S5596705 A JPS5596705 A JP S5596705A JP 451579 A JP451579 A JP 451579A JP 451579 A JP451579 A JP 451579A JP S5596705 A JPS5596705 A JP S5596705A
Authority
JP
Japan
Prior art keywords
resistance
lpf
components gain
gain
ratio
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.)
Pending
Application number
JP451579A
Other languages
Japanese (ja)
Inventor
Akira Usui
Toshimitsu Fujimori
Tetsuo Kuchiki
Hirosuke Yamamoto
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP451579A priority Critical patent/JPS5596705A/en
Publication of JPS5596705A publication Critical patent/JPS5596705A/en
Pending legal-status Critical Current

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  • Superheterodyne Receivers (AREA)

Abstract

PURPOSE: To make adjustment possible while receiving signals, by switching the unit so that the ratio of DC components gain to AC components gain in the LPF in the loop of a PLL circuit may be small for set of a channel selection voltage in respect to the receiving unit of the complete synchronous detection system.
CONSTITUTION: When a channel selection voltage to be applied to a local oscillation circuit is set in a channel selection voltage setting circuit, a high-level voltage is applied to range switching circuit 15, which is connected to the connection point between capacitor C2 and resistance R2 of LPF 13 consisting of resistance R1 and R2, capacitor C2 and amplifier A and consists of resistance R3 and transistor T, for the purpose of reducing the ratio of AC components gain to DC components gain in LPF 13. By this voltage applying, transistor T is made conductive to connect resistance R3 in parallel to resistance R2, thereby reducing the ratio of AC components gain to DC components gain in LPF 13.
COPYRIGHT: (C)1980,JPO&Japio
JP451579A 1979-01-18 1979-01-18 Receiving unit Pending JPS5596705A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP451579A JPS5596705A (en) 1979-01-18 1979-01-18 Receiving unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP451579A JPS5596705A (en) 1979-01-18 1979-01-18 Receiving unit

Publications (1)

Publication Number Publication Date
JPS5596705A true JPS5596705A (en) 1980-07-23

Family

ID=11586178

Family Applications (1)

Application Number Title Priority Date Filing Date
JP451579A Pending JPS5596705A (en) 1979-01-18 1979-01-18 Receiving unit

Country Status (1)

Country Link
JP (1) JPS5596705A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5054274A (en) * 1973-09-10 1975-05-13
JPS5193103A (en) * 1975-02-13 1976-08-16 Fueizu rotsukudo ruupukairo

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5054274A (en) * 1973-09-10 1975-05-13
JPS5193103A (en) * 1975-02-13 1976-08-16 Fueizu rotsukudo ruupukairo

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