JPS54122959A - Amplitude modulator - Google Patents
Amplitude modulatorInfo
- Publication number
- JPS54122959A JPS54122959A JP3078778A JP3078778A JPS54122959A JP S54122959 A JPS54122959 A JP S54122959A JP 3078778 A JP3078778 A JP 3078778A JP 3078778 A JP3078778 A JP 3078778A JP S54122959 A JPS54122959 A JP S54122959A
- Authority
- JP
- Japan
- Prior art keywords
- modulators
- constant current
- modulation
- double balanced
- carrier
- 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
Landscapes
- Amplitude Modulation (AREA)
Abstract
PURPOSE: To perform 100% modulation with no adjustment and to avoid to exceed 100%, by applying the same bias voltage to the double balanced modulator and the balanced differential amplifier or the constant current circuit of the double balanced differential amplifier.
CONSTITUTION: The input terminals 2, 2 of the differential transistors TR26, 27, carrier input terminal of the double balanced modulators 4 to 7, output terminals 3, 3, are commonly connected, the emitter common junction point of the transistors TR26, 27 are connected to the collector of the constant current TR 32, and the base of TR32 is connected to the base of the constant current source TR10, 11 of the modulators 4 to 7. When the carrier output level is changed by shifting the bias voltage of TR10, 11, or the modulation degree is changed by shifting the gain of the modulators, the output current of the modulators and the carrier output current of the differential amplifiers 26 to 27 are limited with the constant current circuit, and since the current is equal, 100% modulation is possible with no adjustment and it can not exceed 100%.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3078778A JPS54122959A (en) | 1978-03-16 | 1978-03-16 | Amplitude modulator |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3078778A JPS54122959A (en) | 1978-03-16 | 1978-03-16 | Amplitude modulator |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54122959A true JPS54122959A (en) | 1979-09-22 |
Family
ID=12313373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3078778A Pending JPS54122959A (en) | 1978-03-16 | 1978-03-16 | Amplitude modulator |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54122959A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5660308U (en) * | 1979-10-16 | 1981-05-22 |
-
1978
- 1978-03-16 JP JP3078778A patent/JPS54122959A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5660308U (en) * | 1979-10-16 | 1981-05-22 |
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