GB450272A - Improvements in apparatus for receiving electrical signals - Google Patents
Improvements in apparatus for receiving electrical signalsInfo
- Publication number
- GB450272A GB450272A GB1268435A GB1268435A GB450272A GB 450272 A GB450272 A GB 450272A GB 1268435 A GB1268435 A GB 1268435A GB 1268435 A GB1268435 A GB 1268435A GB 450272 A GB450272 A GB 450272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- filter
- intermediate frequency
- general electric
- electrical signals
- capacity
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
450,272. Impedance networks. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and BLIGH, N. R., and WELLS, G. M., c/o General Electric Co., Ltd., Wembley, Middlesex. April 27, 1935, No. 12684. [Class 40 (iii)] In a superheterodyne receiver in which the intermediate frequency is higher than the frequency of the signal, a filter of the kind shown in Fig. 1 is employed and the values of L, C1 are so adjusted that the intermediate frequency is rejected. The capacity C1 may be the self capacity of the coil L and the filter may be associated with the aerial circuit or form the second element of a bandpass filter as shown in Fig. 3. In a modification, the filter is used as an intervalve coupling, Fig. 4 (not shown). When a receiver operates over several wavebands the intermediate frequency may be changed with the waveband so as to be above that of the operative band.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1268435A GB450272A (en) | 1935-04-27 | 1935-04-27 | Improvements in apparatus for receiving electrical signals |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1268435A GB450272A (en) | 1935-04-27 | 1935-04-27 | Improvements in apparatus for receiving electrical signals |
Publications (1)
Publication Number | Publication Date |
---|---|
GB450272A true GB450272A (en) | 1936-07-14 |
Family
ID=10009225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1268435A Expired GB450272A (en) | 1935-04-27 | 1935-04-27 | Improvements in apparatus for receiving electrical signals |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB450272A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1007825B (en) * | 1952-01-21 | 1957-05-09 | Philips Nv | Circuit arrangement for frequency conversion of ultra-high frequency oscillations |
DE1026800B (en) * | 1953-12-10 | 1958-03-27 | Heinz Fritz Reichenkron Dipl I | Input circuit of a VHF overlay receiver |
DE972521C (en) * | 1953-05-19 | 1959-08-06 | Graetz Kommandit Ges | Circuit arrangement for radio receivers based on the superposition principle with tunable ferrite rod antenna for suppressing intermediate frequency interference |
DE1116745B (en) * | 1959-01-13 | 1961-11-09 | Tesla Np | Input circuit for overlay receiver with capacitive antenna coupling |
-
1935
- 1935-04-27 GB GB1268435A patent/GB450272A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1007825B (en) * | 1952-01-21 | 1957-05-09 | Philips Nv | Circuit arrangement for frequency conversion of ultra-high frequency oscillations |
DE972521C (en) * | 1953-05-19 | 1959-08-06 | Graetz Kommandit Ges | Circuit arrangement for radio receivers based on the superposition principle with tunable ferrite rod antenna for suppressing intermediate frequency interference |
DE1026800B (en) * | 1953-12-10 | 1958-03-27 | Heinz Fritz Reichenkron Dipl I | Input circuit of a VHF overlay receiver |
DE1116745B (en) * | 1959-01-13 | 1961-11-09 | Tesla Np | Input circuit for overlay receiver with capacitive antenna coupling |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1515736A (en) | Signal-separating circuit | |
GB450272A (en) | Improvements in apparatus for receiving electrical signals | |
GB496647A (en) | Improvements in or relating to electric high frequency signalling systems | |
US2448036A (en) | Simulating impedance system | |
GB533171A (en) | Wave filter | |
US1757333A (en) | Frequency trap for radio signaling apparatus | |
GB372400A (en) | Improvements relating to telephone instrument circuits | |
GB407405A (en) | Improvements in electro-mechanical devices such as instruments for recording, reproducing, or transmitting sound | |
GB439714A (en) | Improvements in and relating to direction finding apparatus for use in wireless telegraphy | |
GB230901A (en) | Improvements in and relating to "wireless" circuits | |
GB448011A (en) | Improved circuit arrangements for telephone or like instruments | |
SU35262A1 (en) | Differential Receiver | |
GB515710A (en) | Improvements in or relating to aerial systems for wireless receivers | |
GB449205A (en) | Improvements in electric signal receivers, such for example as television receivers | |
GB479788A (en) | Improvements in or relating to image suppression circuits for superheterodyne radio receivers | |
GB473896A (en) | Improvements in or relating to radio receivers | |
GB445917A (en) | Carrier wave signalling system | |
GB445140A (en) | Improvements in television and like circuits | |
GB448321A (en) | Image suppressing circuits for superheterodyne radio receivers | |
GB518969A (en) | Improvements in electrical tuned circuits | |
GB469579A (en) | Image suppression system for superheterodyne radio receivers | |
GB458801A (en) | Improvements in or relating to radio receiving apparatus | |
GB373142A (en) | Wireless receiving circuits | |
GB410499A (en) | Improvements in or relating to electrical resonant circuit arrangements | |
GB577462A (en) | Improvements in electric multistage amplifiers |