JPS55625A - Amplitude modulator - Google Patents
Amplitude modulatorInfo
- Publication number
- JPS55625A JPS55625A JP7221978A JP7221978A JPS55625A JP S55625 A JPS55625 A JP S55625A JP 7221978 A JP7221978 A JP 7221978A JP 7221978 A JP7221978 A JP 7221978A JP S55625 A JPS55625 A JP S55625A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- base band
- band signal
- terminal
- binary base
- 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
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
- H04L27/04—Modulator circuits; Transmitter circuits
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
PURPOSE:To obtain the ON-OFF AM signal which features a high fidelity to the binary base band signal by controlling both the oscillation and its stop of the integrating astable multivibrator containing the differential amplifier circuit. CONSTITUTION:With application of the positive voltage to input terminal T1, astable multivibrator type oscillation circuit 4 starts oscillations. And circuit 4 stops oscillations with application of the negtive voltage to terminal T1. Circuit 6 functions as the buffer amplifier and the low-pass filter. Accordingly, circuit 6 functions as the ON-OFF AM modulator by the binary base band signal applied to terminal T1 with no DC component of the binary base band signal contained. As a result, a high-fidelity ON-OFF AM signals can be obtained.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7221978A JPS55625A (en) | 1978-06-16 | 1978-06-16 | Amplitude modulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7221978A JPS55625A (en) | 1978-06-16 | 1978-06-16 | Amplitude modulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55625A true JPS55625A (en) | 1980-01-07 |
Family
ID=13482907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7221978A Pending JPS55625A (en) | 1978-06-16 | 1978-06-16 | Amplitude modulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55625A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5812461A (en) * | 1981-07-15 | 1983-01-24 | Takei Kiki Kogyo Kk | Radio transmission system for information pulse |
JPS6010822A (en) * | 1983-06-29 | 1985-01-21 | Matsushita Electric Ind Co Ltd | Transmitter-receiver |
JPH03219732A (en) * | 1989-11-06 | 1991-09-27 | Sanyo Electric Co Ltd | Communication system |
JPH03273724A (en) * | 1989-05-08 | 1991-12-04 | Sanyo Electric Co Ltd | Spread spectrum communication system |
-
1978
- 1978-06-16 JP JP7221978A patent/JPS55625A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5812461A (en) * | 1981-07-15 | 1983-01-24 | Takei Kiki Kogyo Kk | Radio transmission system for information pulse |
JPS6010822A (en) * | 1983-06-29 | 1985-01-21 | Matsushita Electric Ind Co Ltd | Transmitter-receiver |
JPH0449296B2 (en) * | 1983-06-29 | 1992-08-11 | Matsushita Electric Ind Co Ltd | |
JPH03273724A (en) * | 1989-05-08 | 1991-12-04 | Sanyo Electric Co Ltd | Spread spectrum communication system |
JPH03219732A (en) * | 1989-11-06 | 1991-09-27 | Sanyo Electric Co Ltd | Communication system |
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