GB422866A - Improvements in or relating to radio and other modulated carrier or like receivers - Google Patents
Improvements in or relating to radio and other modulated carrier or like receiversInfo
- Publication number
- GB422866A GB422866A GB20642/33A GB2064233A GB422866A GB 422866 A GB422866 A GB 422866A GB 20642/33 A GB20642/33 A GB 20642/33A GB 2064233 A GB2064233 A GB 2064233A GB 422866 A GB422866 A GB 422866A
- Authority
- GB
- United Kingdom
- Prior art keywords
- quenching
- valve
- oscillations
- frequency
- stage
- 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
- 230000010355 oscillation Effects 0.000 abstract 5
- 238000010791 quenching Methods 0.000 abstract 4
- 230000000171 quenching effect Effects 0.000 abstract 4
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D11/00—Super-regenerative demodulator circuits
- H03D11/02—Super-regenerative demodulator circuits for amplitude-modulated oscillations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
Abstract
422,866. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, and LINSELL, A. A., 43, West Hill, Sydenham, both in London. July 21, 1933, No. 20642. [Class 40 (v)] In a super-heterodyne receiver, a superregenerative stage precedes the frequency changing stage. In one embodiment, the quenching oscillations for the super-regenerative stage and the local oscillations for frequency changing are generated separately, Fig. 1, not shown. Preferably a single oscillator provides both the quenching and the local oscillations. The valve 1, Fig. 2, back coupled at 2, 3, is supplied over coupling 4 with quenching ing oscillations from a valve 6LO, whose grid is fed from an oscillator Q. The circuit 10, coupled to the output of valve 6LO and tuned to an harmonic of the quenching frequency, supplies the local oscillations over coupling 8<1> to the input of the frequency-changing circuit 11. The tuning elements in circuits 3, Q, 10, may be uni-controlled.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL40239D NL40239C (en) | 1933-07-21 | ||
| DEM127982D DE635972C (en) | 1933-07-21 | Ãberrueckkopplungsempfaenger with intermediate frequency section | |
| GB20642/33A GB422866A (en) | 1933-07-21 | 1933-07-21 | Improvements in or relating to radio and other modulated carrier or like receivers |
| FR774887D FR774887A (en) | 1933-07-21 | 1934-06-23 | Improvements to modulated wave receptors |
| US733816A US2100605A (en) | 1933-07-21 | 1934-07-05 | Radio receiving system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB20642/33A GB422866A (en) | 1933-07-21 | 1933-07-21 | Improvements in or relating to radio and other modulated carrier or like receivers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB422866A true GB422866A (en) | 1935-01-21 |
Family
ID=10149284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB20642/33A Expired GB422866A (en) | 1933-07-21 | 1933-07-21 | Improvements in or relating to radio and other modulated carrier or like receivers |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2100605A (en) |
| FR (1) | FR774887A (en) |
| GB (1) | GB422866A (en) |
| NL (1) | NL40239C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB453135A (en) * | 1935-03-04 | 1936-09-04 | Marconi Wireless Telegraph Co | Improvements in or relating to television and like receivers |
| BE473687A (en) * | 1946-08-07 | |||
| US2609492A (en) * | 1948-03-13 | 1952-09-02 | Hazeltine Research Inc | Tunable superheterodyne superregenerative receiver |
| BE487876A (en) * | 1948-03-16 | |||
| US2614212A (en) * | 1948-11-19 | 1952-10-14 | Hazeltine Research Inc | Frequency converter system for radio receivers |
| US2748267A (en) * | 1952-05-16 | 1956-05-29 | Hazeltine Research Inc | Superregenerative superheterodyne wave-signal receiver |
-
0
- NL NL40239D patent/NL40239C/xx active
-
1933
- 1933-07-21 GB GB20642/33A patent/GB422866A/en not_active Expired
-
1934
- 1934-06-23 FR FR774887D patent/FR774887A/en not_active Expired
- 1934-07-05 US US733816A patent/US2100605A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| US2100605A (en) | 1937-11-30 |
| FR774887A (en) | 1934-12-15 |
| NL40239C (en) |
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