GB478211A - Improvements in or relating to radio and like high frequency transmission line arrangements - Google Patents
Improvements in or relating to radio and like high frequency transmission line arrangementsInfo
- Publication number
- GB478211A GB478211A GB19457/36A GB1945736A GB478211A GB 478211 A GB478211 A GB 478211A GB 19457/36 A GB19457/36 A GB 19457/36A GB 1945736 A GB1945736 A GB 1945736A GB 478211 A GB478211 A GB 478211A
- Authority
- GB
- United Kingdom
- Prior art keywords
- line
- frequency
- july
- transmission line
- matching
- 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
- 230000005540 biological transmission Effects 0.000 title abstract 2
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements
Landscapes
- Transmitters (AREA)
Abstract
478,211. Wireless systems. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 13, 1936, Nos. 19457 and 19458. Convention dates, July 13, 1935 and July 17, 1935. [Class 40 (v)] The impedances of a H.F. transmission line and a load, such as a radiating aerial, are matched at more than one operating frequency, an extra matching impedance being inserted for each additional frequency by switching or being permanently connected but inoperative on selected frequencies. In one embodiment the inductance 3, is connected across the line 2, and the line and load 1 are matched thereby at a first frequency. For matching at a second frequency the switch 4 is moved to add an inductance 5. The method may be applied to systems using more than two different frequencies ; the switches may be remotely controlled and the impedances may comprise single or double line sections, capacities &c. In other embodiments line sections &c. are connected permanently to the line at calculated positions and arranged to present an infinite impedance to the frequencies other than that for which they are provided for matching purposes.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US31155A US2109465A (en) | 1935-07-13 | 1935-07-13 | High frequency system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB478211A true GB478211A (en) | 1938-01-13 |
Family
ID=21857912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB19457/36A Expired GB478211A (en) | 1935-07-13 | 1936-07-13 | Improvements in or relating to radio and like high frequency transmission line arrangements |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2109465A (en) |
| GB (1) | GB478211A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2510022A (en) * | 1944-03-15 | 1950-05-30 | Rca Corp | Band-pass signal transmission system |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2708238A (en) * | 1954-04-09 | 1955-05-10 | Silverman Emanuel | Television wave trap and the like |
| US2997671A (en) * | 1958-02-26 | 1961-08-22 | Armstrong Cork Co | Dual load transmission system |
-
1935
- 1935-07-13 US US31155A patent/US2109465A/en not_active Expired - Lifetime
-
1936
- 1936-07-13 GB GB19457/36A patent/GB478211A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2510022A (en) * | 1944-03-15 | 1950-05-30 | Rca Corp | Band-pass signal transmission system |
Also Published As
| Publication number | Publication date |
|---|---|
| US2109465A (en) | 1938-03-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB592415A (en) | Improvements in or relating to frequency discriminator circuits | |
| GB478211A (en) | Improvements in or relating to radio and like high frequency transmission line arrangements | |
| GB470543A (en) | Improvements in phase shifting circuits for radio and like purposes and in systems embodying such circuits | |
| GB557942A (en) | Broad band antenna | |
| GB289875A (en) | Improvements in or relating to high frequency circuit arrangements, radio transmitters and the like | |
| GB1117258A (en) | Television tuner input circuit | |
| GB698509A (en) | Improvements in or relating to filters and the like for use on very high frequencies | |
| US1977271A (en) | Radio antenna circuit | |
| GB542485A (en) | Improvements in coupling-circuit arrangements in radio-receivers | |
| GB523074A (en) | Improvements in or relating to radio receiving systems | |
| GB557083A (en) | Improvements in and relating to means for reducing noise in radio receivers | |
| GB401600A (en) | Improvements in or relating to high frequency transmitting arrangements | |
| GB454503A (en) | Improvements in or relating to electrical filters | |
| GB297434A (en) | Improvements in or relating to coupling arrangements for use in high frequency circuits | |
| GB457398A (en) | Multi-range superheterodyne receiver | |
| GB413724A (en) | Improvements in or relating to superheterodyne wireless receiving sets | |
| GB404349A (en) | Improvements in or relating to frequency selective circuit arrangements for use in radio reception | |
| GB563520A (en) | Improvements in or relating to electrical apparatus including networks suitable for use for dual signal transmission | |
| GB230510A (en) | Improvements relating to apparatus for the transmission of wireless signals | |
| GB438649A (en) | Improvements in or relating to electrical high frequency feeder arrangements | |
| GB460221A (en) | Improvements in or relating to radio receivers | |
| GB635561A (en) | Improvements in or relating to transformer and coupling circuit arrangements | |
| GB612842A (en) | Improvements in or relating to radio-receiving devices comprising a frame aerial | |
| GB462014A (en) | Improvements in or relating to aerial feeder arrangements | |
| GB373142A (en) | Wireless receiving circuits |