GB463006A - Improvements in or relating to devices for coupling tuned circuits in radio-receivers and the like - Google Patents
Improvements in or relating to devices for coupling tuned circuits in radio-receivers and the likeInfo
- Publication number
- GB463006A GB463006A GB180936A GB180936A GB463006A GB 463006 A GB463006 A GB 463006A GB 180936 A GB180936 A GB 180936A GB 180936 A GB180936 A GB 180936A GB 463006 A GB463006 A GB 463006A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frequency
- tuned circuits
- receivers
- relating
- radio
- 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
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1758—Series LC in shunt or branch path
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/17—Structural details of sub-circuits of frequency selective networks
- H03H7/1741—Comprising typical LC combinations, irrespective of presence and location of additional resistors
- H03H7/1775—Parallel LC in shunt or branch path
Landscapes
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
463,006. Impedance networks. GENERAL ELECTRIC CO., Ltd., and ASPIN, J. J. E. Jan. 20, 1936, No. 1809. [Class 40 (iii)] A band-pass filter, suitable for excluding the intermediate frequency from circuits in a superheterodyne receiver, comprises two tuned circuits A, B coupled by one or more T-sections Z1, Z2, Z3, which are equivalent to a coupling condenser whose capacity diminishes as the frequency rises. Preferably, the series arms Z1, Z2 are condensers while the shunt arm Z3 is a rejector circuit, Fig. 3 (not shown), or an acceptor circuit, Fig. 4 (not shown), according as the intermediate frequency is lower or higher than the signal frequency of the superheterodyne receiver. In the former case the resonance frequency of the arm Z3 lies below, and in the latter above, the signal-frequency range. Specification 391,598 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB180936A GB463006A (en) | 1936-01-20 | 1936-01-20 | Improvements in or relating to devices for coupling tuned circuits in radio-receivers and the like |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB180936A GB463006A (en) | 1936-01-20 | 1936-01-20 | Improvements in or relating to devices for coupling tuned circuits in radio-receivers and the like |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB463006A true GB463006A (en) | 1937-03-19 |
Family
ID=9728395
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB180936A Expired GB463006A (en) | 1936-01-20 | 1936-01-20 | Improvements in or relating to devices for coupling tuned circuits in radio-receivers and the like |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB463006A (en) |
-
1936
- 1936-01-20 GB GB180936A patent/GB463006A/en not_active Expired
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