GB436948A - Improvements in or relating to radio receiving apparatus - Google Patents
Improvements in or relating to radio receiving apparatusInfo
- Publication number
- GB436948A GB436948A GB1123634A GB1123634A GB436948A GB 436948 A GB436948 A GB 436948A GB 1123634 A GB1123634 A GB 1123634A GB 1123634 A GB1123634 A GB 1123634A GB 436948 A GB436948 A GB 436948A
- Authority
- GB
- United Kingdom
- Prior art keywords
- frame
- capacity
- aerials
- coupling
- disturbance
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S3/00—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received
- G01S3/02—Direction-finders for determining the direction from which infrasonic, sonic, ultrasonic, or electromagnetic waves, or particle emission, not having a directional significance, are being received using radio waves
- G01S3/04—Details
- G01S3/06—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna
- G01S3/065—Means for increasing effective directivity, e.g. by combining signals having differently oriented directivity characteristics or by sharpening the envelope waveform of the signal derived from a rotating or oscillating beam antenna by using non-directional aerial
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Circuits Of Receivers In General (AREA)
- Noise Elimination (AREA)
- Structure Of Receivers (AREA)
Abstract
436,948. Wireless receiving-apparatus. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, and HERMANSPANN, P., 12, Hallesches Ufer, Berlin. April 13, 1934, No. 11236. [Class 40 (v)] The effect of local disturbance is minimized by using an aperiodic frame aerial R, Fig. 2, (which may be assumed to have a capacity coupling Co say of 20 cms. with a conductor L radiating the disturbance) and coupling the frame to the tuned input G through a primary winding L1 (preferably only a single turn) which presents a substantially-smaller impedance to the disturbing frequency than the capacity Co. The result is to confuse most of the total voltage-drop of the interfering frequency to the capacity Co, leaving only a small residual voltage to reach the input of the valve M. To remove the limitation due to the directional effect of a single frame aerial, two frame-aerials R, R1, Fig. 3, may be arranged at right angles, one being fitted with phase-adjusting means P; or a switch may be provided so that the particular frame producing the stronger signals is always used. The two frame aerials may be constituted by parts of the chassis of the set, or the housing of the loud speaker, so as to economize space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1123634A GB436948A (en) | 1934-04-13 | 1934-04-13 | Improvements in or relating to radio receiving apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1123634A GB436948A (en) | 1934-04-13 | 1934-04-13 | Improvements in or relating to radio receiving apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB436948A true GB436948A (en) | 1935-10-14 |
Family
ID=9982494
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1123634A Expired GB436948A (en) | 1934-04-13 | 1934-04-13 | Improvements in or relating to radio receiving apparatus |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB436948A (en) |
-
1934
- 1934-04-13 GB GB1123634A patent/GB436948A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB541905A (en) | Loop antenna | |
| GB475348A (en) | Improvements in or relating to wireless aerial systems | |
| GB436948A (en) | Improvements in or relating to radio receiving apparatus | |
| GB506518A (en) | Improvements in or relating to short wave transmitting aerial systems | |
| GB422029A (en) | Improvements in or relating to radio and like receivers | |
| GB450263A (en) | Improvements in wireless receiving circuits and apparatus | |
| GB506630A (en) | Improvements in or relating to directional radio receiver systems | |
| US2572183A (en) | Amplitude-modulation-frequency-modulation antenna | |
| GB680782A (en) | Radio frequency transformer | |
| US1742602A (en) | Selector system | |
| GB515710A (en) | Improvements in or relating to aerial systems for wireless receivers | |
| GB453759A (en) | Improvements in or relating to radio and other transmitter installations | |
| GB478211A (en) | Improvements in or relating to radio and like high frequency transmission line arrangements | |
| GB487125A (en) | Improvements in wireless receivers and housings therefor | |
| GB519631A (en) | Improvements in or relating to television systems | |
| GB356090A (en) | Improvements in or relating to antenna systems | |
| GB418117A (en) | Improvements in or relating to apparatus for radio reception and gramophone reproduction | |
| GB667236A (en) | Improvements in or relating to superheterodyne radio receivers | |
| GB374294A (en) | Improvements relating to radio reception apparatus | |
| GB617312A (en) | Improvements in or relating to superheterodyne radio-receivers with image-frequency suppression | |
| GB755756A (en) | Improvements in or relating to radio receivers | |
| GB520628A (en) | Improvements in and relating to aerials for radio receiving systems | |
| GB172024A (en) | Improvements in or relating to circuits for electrical oscillations | |
| GB594657A (en) | Improvements in or relating to tunable circuit arrangements | |
| GB526503A (en) | Improvements in or relating to aerial coupling systems in superheterodyne radio receivers |