GB633875A - Improvements in mixing circuits for ultra-short waves - Google Patents
Improvements in mixing circuits for ultra-short wavesInfo
- Publication number
- GB633875A GB633875A GB10977/47A GB1097747A GB633875A GB 633875 A GB633875 A GB 633875A GB 10977/47 A GB10977/47 A GB 10977/47A GB 1097747 A GB1097747 A GB 1097747A GB 633875 A GB633875 A GB 633875A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diode
- ultra
- triode
- damping
- reduced
- 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
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/02—Transference of modulation from one carrier to another, e.g. frequency-changing by means of diodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
- Attenuators (AREA)
- Noise Elimination (AREA)
Abstract
633,875. Superheterodyne circuits. PHILIPS LAMPS, Ltd. April 24, 1947, No. 10977. Convention date, Nov. 3, 1944. [Class 40 (v)] In a frequency-changing circuit employing a diode mixer, the damping of the input circuit is reduced and the signal-to-noise ratio improved by means of a triode reaction valve 9, Fig. 2. The grid of the triode may constitute the mixing diode (Fig. 3, not shown). The Specification as open to inspection under Sect. 91 comprises also an arrangement in which the damping is reduced by the use of a diode having a transit time such that the input impedance is negative (Fig. 1, not shown). This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BE258996X | 1944-11-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB633875A true GB633875A (en) | 1949-12-30 |
Family
ID=3866708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB10977/47A Expired GB633875A (en) | 1944-11-03 | 1947-04-24 | Improvements in mixing circuits for ultra-short waves |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE457748A (en) |
| CH (1) | CH258996A (en) |
| FR (1) | FR936845A (en) |
| GB (1) | GB633875A (en) |
-
0
- BE BE457748D patent/BE457748A/xx unknown
-
1946
- 1946-09-12 CH CH258996D patent/CH258996A/en unknown
- 1946-11-20 FR FR936845D patent/FR936845A/en not_active Expired
-
1947
- 1947-04-24 GB GB10977/47A patent/GB633875A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR936845A (en) | 1948-07-30 |
| BE457748A (en) | |
| CH258996A (en) | 1948-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB633875A (en) | Improvements in mixing circuits for ultra-short waves | |
| GB604854A (en) | Improvements in and relating to mixing circuits such as are used in superheterodyne receivers | |
| GB613681A (en) | Improved circuit arrangements for the amplification or frequency-transformation of electrical oscillations | |
| GB617647A (en) | Improvements in or relating to frequency-changing circuits | |
| GB672979A (en) | Improvements in mixing or detector circuits incorporating cathode ray tubes | |
| GB628029A (en) | Improvements in mixing circuits for superheterodyne receivers | |
| GB702359A (en) | Improvements relating to non-linear electrical circuits | |
| GB651594A (en) | Improvements in or relating to superheterodyne receivers | |
| GB537699A (en) | Improvements in frequency modulation systems | |
| GB523883A (en) | Improvements in superheterodyne radio receivers | |
| GB894979A (en) | Frequency converter | |
| GB608131A (en) | Super-regenerative receiver | |
| GB428285A (en) | Improvements in or relating to thermionic valve and like circuit arrangements | |
| GB594567A (en) | Superregenerative radio receiver | |
| GB777533A (en) | Improvements in or relating to additive mixing circuit arrangements for frequency changing | |
| ES269970A1 (en) | High frequency transistor circuits | |
| ES205363A1 (en) | A radio-circuit circuit provision (Machine-translation by Google Translate, not legally binding) | |
| GB648925A (en) | Improvements in or relating to discharge-tube oscillator circuits | |
| GB623060A (en) | Improvements in or relating to circuits for generating phase-modulated oscillations | |
| GB741913A (en) | Improvements in or relating to additive mixing circuits | |
| GB470572A (en) | Improvements in or relating to multi-grid thermionic valve oscillators | |
| AU152248B2 (en) | Thermionic valve mixer circuit arrangements | |
| CA479768A (en) | Mixing circuits of the kind including multi-grid valves | |
| CA444106A (en) | Push-pull mixing circuit for ultra-short waves | |
| GB628740A (en) | Improvements in systems making use of electronic tubes, especially for frequency changing |