GB779553A - Improvements in and relating to high frequency apparatus - Google Patents
Improvements in and relating to high frequency apparatusInfo
- Publication number
- GB779553A GB779553A GB18268/54A GB1826854A GB779553A GB 779553 A GB779553 A GB 779553A GB 18268/54 A GB18268/54 A GB 18268/54A GB 1826854 A GB1826854 A GB 1826854A GB 779553 A GB779553 A GB 779553A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inductors
- capacitor
- coupling
- circuits
- inductances
- 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
- H03H2/00—Networks using elements or techniques not provided for in groups H03H3/00 - H03H21/00
- H03H2/005—Coupling circuits between transmission lines or antennas and transmitters, receivers or amplifiers
Landscapes
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Abstract
779,553. Impedance networks. N. S. F., Ltd. (Oak Mfg. Co.). Sept. 22, 1955 [June 22, 1954], No. 18268/54. Class 40 (8). [Also in Group XL (c)] A band-pass coupling for the R.F. stage of a V.H.F. receiver comprises two tuned circuits, the inductances of the tuned circuits and the inductive coupling between them being provided by an integral metal member, Fig. 2, whose arms A, B, C constitute respectively the inductances LA, LB, LC. One tuned circuit is formed by the capacitor C3 together with inductors L1, LA, LC and the other by capacitor C6 together with inductors L2, LB, LC. The inductor LC, common to both circuits, provides mutual inductance between them and together with capacitor C4 determines the degree of coupling. Tuning is effected by ganged switches S1A, SIB which provide incremental variation (indicated conventionally on Fig. 1) of the inductors L1, L2 which in practice are constituted by a series of small inductors. The arm C of the inductive metal member is connected to the chassis of the receiver by means of projections 1. The arms A and B are shaped to facilitate connection of leads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18268/54A GB779553A (en) | 1954-06-22 | 1954-06-22 | Improvements in and relating to high frequency apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB18268/54A GB779553A (en) | 1954-06-22 | 1954-06-22 | Improvements in and relating to high frequency apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB779553A true GB779553A (en) | 1957-07-24 |
Family
ID=10109538
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB18268/54A Expired GB779553A (en) | 1954-06-22 | 1954-06-22 | Improvements in and relating to high frequency apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB779553A (en) |
-
1954
- 1954-06-22 GB GB18268/54A patent/GB779553A/en not_active Expired
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