GB869709A - Improvements relating to waveguide switches - Google Patents
Improvements relating to waveguide switchesInfo
- Publication number
- GB869709A GB869709A GB41685/58A GB4168558A GB869709A GB 869709 A GB869709 A GB 869709A GB 41685/58 A GB41685/58 A GB 41685/58A GB 4168558 A GB4168558 A GB 4168558A GB 869709 A GB869709 A GB 869709A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guides
- distance
- tape
- slits
- transmitter
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/08—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from amino-carboxylic acids
- C08G69/14—Lactams
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/10—Auxiliary devices for switching or interrupting
- H01P1/12—Auxiliary devices for switching or interrupting by mechanical chopper
- H01P1/122—Waveguide switches
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Waveguide Switches, Polarizers, And Phase Shifters (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
869,709. R.F. coupling. COMPAGNIE FRANCAISE THOMSON-HOUSTON. Dec. 24, 1958 [Dec. 27, 1957], No. 41685/58. Class 40(7) [Also in Group XL(b) ] A waveguide switch for connecting four waveguide channels a, b, c, d in pairs in two different ways comprises two waveguides 3, 4 with directional couplers 1, 2, preferably 3dB, spaced apart and a metallic tape 7, perforated or slotted at 8 and 9, Fig. 3, for introducing reflectors simultaneously into the waveguides 3 and 4 between the couplers. The distance between the nearest points of the perforations or slits 8, 9 is equal to the distance l between the guides 3, 4. In the construction shown in Fig. 4 an endless metallic tape 10, slotted at 13, 14, 15, 16 is introduced into the guides 3, 4 by being wound on two similar pulleys 11, 12. The distance between the nearest points of the slits 13, 14 and also that between the slits 15, 16 are equal to the distance l between the guides 3, 4. The positions of the slits in the tape 10 are so determined that they can be simultaneously positioned within the guides 3, 4. The horizontal distance between the portions of the tape and the diameters of the pulleys are equal to a quarter of the wavelength propagated in the guides 3, 4. The openings of the guides 3, 4 through which the tape 10 penetrates and emerges are provided with traps 17, 18, 19 and 20. Two parallel tapes moving in opposite directions can be used. The switch described above can be used to connect a transmitter and two antennae alternately or to connect the transmitter and the antenna of a system of radio-detection so that the presence of the latter is not disclosed during operations of regulation or testing. In the latter case the channel c of the switch is connected to the transmitter, channel b to the antenna, and the channels a and d to non-reflecting terminal devices which are placed in the channel a for dissipating the power of the waves produced by the transmitter.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2997670X | 1957-12-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB869709A true GB869709A (en) | 1961-06-07 |
Family
ID=74181411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB41685/58A Expired GB869709A (en) | 1957-12-27 | 1958-12-24 | Improvements relating to waveguide switches |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2997670A (en) |
| FR (1) | FR1197061A (en) |
| GB (1) | GB869709A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3697894A (en) * | 1971-01-29 | 1972-10-10 | Ray M Johnson | Waveguide power switch having alternately closed shorting plates |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2586993A (en) * | 1948-07-30 | 1952-02-26 | Raytheon Mfg Co | Balanced duplexer |
| US2709241A (en) * | 1950-02-28 | 1955-05-24 | Raytheon Mfg Co | Hybrid directional coupler |
| US2869081A (en) * | 1955-05-11 | 1959-01-13 | Wallis L Teeter | High power broadband waveguide switch |
-
1957
- 1957-12-27 FR FR1197061D patent/FR1197061A/en not_active Expired
-
1958
- 1958-12-24 US US782909A patent/US2997670A/en not_active Expired - Lifetime
- 1958-12-24 GB GB41685/58A patent/GB869709A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2997670A (en) | 1961-08-22 |
| FR1197061A (en) | 1959-11-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB763894A (en) | Radio frequency transmission system | |
| GB855723A (en) | Improvements in or relating to electromagnetic wave transmission systems | |
| GB722660A (en) | Directional couplers for microwave transmission systems | |
| GB994469A (en) | Junction devices between three wave guides of different cross-section | |
| GB800056A (en) | Improvements in resonant directional waveguide couplers | |
| GB869709A (en) | Improvements relating to waveguide switches | |
| JPS6459203A (en) | Nxn single mode light waveguide coupler and coupling method | |
| JPS529347A (en) | Microwave equipment | |
| ES443922A1 (en) | Reflected-wave maser | |
| JPS5310246A (en) | Attenuator for millimeter wave guide | |
| JPS53113454A (en) | Directional coupler of waveguide type | |
| JPS56131204A (en) | Waveguide type power distributor | |
| GB929289A (en) | Improvements relating to electrical duplexers | |
| GB820324A (en) | Improvements in and relating to waveguides | |
| JPS5258306A (en) | Transformer for dual transmission | |
| GB800923A (en) | Improvements in or relating to frequency separating arrangements | |
| GB896707A (en) | Improvements in or relating to hybrid junctions for use on very high frequencies | |
| JPS5212502A (en) | Data highway-system-signal transmission system | |
| JPS56115002A (en) | Waveguide-type directional coupler | |
| JPS5232612A (en) | Mode multiple millimeter wave transmission system | |
| GB948299A (en) | Improvements in or relating to short slot couplers | |
| GB843634A (en) | Improvements relating to electrical duplexers | |
| JPS5477051A (en) | Waveguide-strip line converter | |
| GB808038A (en) | Improvements in or relating to wave-guide systems | |
| JPS5370647A (en) | Subminiature switch for waveguide |