GB1258310A - - Google Patents
Info
- Publication number
- GB1258310A GB1258310A GB1258310DA GB1258310A GB 1258310 A GB1258310 A GB 1258310A GB 1258310D A GB1258310D A GB 1258310DA GB 1258310 A GB1258310 A GB 1258310A
- Authority
- GB
- United Kingdom
- Prior art keywords
- march
- input
- demodulator
- telefonaktiebolaget
- ericsson
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D5/00—Circuits for demodulating amplitude-modulated or angle-modulated oscillations at will
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Measurement Of Current Or Voltage (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Amplifiers (AREA)
- Amplitude Modulation (AREA)
Abstract
1,258,310. Transistor demodulator circuits. TELEFONAKTIEBOLAGET L.M. ERICSSON. 27 March, 1969 [28 March, 1968], No. 16237/69. Heading H3T. A demodulator for amplitude modulated signals comprises two transistors connected in a long tail pair configuration with a capacitor C connected across the common emitter resistor R 3 to decouple the carrier. Rectification is effected by the base-emitter diodes the modulated signal being fed to one input I a , and a reference direct potential being applied to the other input R a .
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE412568A SE329419B (en) | 1968-03-28 | 1968-03-28 | ANORINATION FOR OBTAINING THE DIFFERENCE BETWEEN THE ENVELOPE CURVES OF TWO VOLTAGES |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1258310A true GB1258310A (en) | 1971-12-30 |
Family
ID=20263590
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1258310D Expired GB1258310A (en) | 1968-03-28 | 1969-03-27 |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE1909635A1 (en) |
FR (1) | FR2004896A1 (en) |
GB (1) | GB1258310A (en) |
NL (1) | NL6903315A (en) |
SE (1) | SE329419B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55153405A (en) * | 1979-05-18 | 1980-11-29 | Sanyo Electric Co Ltd | Fm detection circuit |
-
1968
- 1968-03-28 SE SE412568A patent/SE329419B/en unknown
-
1969
- 1969-02-21 DE DE19691909635 patent/DE1909635A1/en active Pending
- 1969-03-04 NL NL6903315A patent/NL6903315A/xx unknown
- 1969-03-17 FR FR6907542A patent/FR2004896A1/fr active Pending
- 1969-03-27 GB GB1258310D patent/GB1258310A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
NL6903315A (en) | 1969-09-30 |
SE329419B (en) | 1970-10-12 |
FR2004896A1 (en) | 1969-12-05 |
DE1909635A1 (en) | 1969-10-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PE20 | Patent expired after termination of 20 years |