GB575739A - An adjustable impedance device for use in wave guides - Google Patents
An adjustable impedance device for use in wave guidesInfo
- Publication number
- GB575739A GB575739A GB593944A GB593944A GB575739A GB 575739 A GB575739 A GB 575739A GB 593944 A GB593944 A GB 593944A GB 593944 A GB593944 A GB 593944A GB 575739 A GB575739 A GB 575739A
- Authority
- GB
- United Kingdom
- Prior art keywords
- guide
- probes
- diaphragm
- contraction
- wave guides
- 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
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/04—Coupling devices of the waveguide type with variable factor of coupling
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
575,739. Wave guides. BRITISH THOMSON-HOUSTON CO., Ltd., BROWN, L. W., and NICOLL, J. H. March 30, 1944, No. 5939. [Classes 40 (iii) and 40 (v)] A wave guide has its impedance changed by forming in the guide a sudden contraction in its cross-section by. means of a diaphragm or the equivalent, and providing two rods or probes of insulating material extending into the guide in the vicinity of the contraction and fixed in location longitudinally of the guide. Figs. 3 and 4 show respectively side and end views of a rectangular guide 1 in which the contraction 6 is in the form of projections 8 from opposite sides of the guide. The probes comprise rods 3, 4 of low-loss insulating material such as quartz extending adjustably into the guide. The probes may be arranged on the same side of the diaphragm or may be in the plane of the diaphragm. There may be two diaphragms. The diaphragms act as shunt inductance and the probes as shunt capacitance. The combination may be used as a variable matching impedance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB593944A GB575739A (en) | 1944-03-30 | 1944-03-30 | An adjustable impedance device for use in wave guides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB593944A GB575739A (en) | 1944-03-30 | 1944-03-30 | An adjustable impedance device for use in wave guides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB575739A true GB575739A (en) | 1946-03-04 |
Family
ID=9805454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB593944A Expired GB575739A (en) | 1944-03-30 | 1944-03-30 | An adjustable impedance device for use in wave guides |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB575739A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3748604A (en) * | 1971-04-21 | 1973-07-24 | Bell Telephone Labor Inc | Tunable microwave bandstop resonant cavity apparatus |
-
1944
- 1944-03-30 GB GB593944A patent/GB575739A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3748604A (en) * | 1971-04-21 | 1973-07-24 | Bell Telephone Labor Inc | Tunable microwave bandstop resonant cavity apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB612410A (en) | Improvements in or relating to ultra high frequency wave guides | |
| GB631505A (en) | Coupling devices or filters for electrical wave transmission systems | |
| GB649214A (en) | Improvements in devices for the transmission of ultra-high-frequency electro-magnetic waves through dielectric waveguides | |
| GB575739A (en) | An adjustable impedance device for use in wave guides | |
| GB811807A (en) | Improvements in or relating to electromagnetic wave guide transformers | |
| GB683273A (en) | Improvements in or relating to electrical impedance transformers for use at very high frequencies | |
| GB568831A (en) | A device for coupling two high-frequency electrical circuits | |
| GB592398A (en) | Improvements in or relating to impedance transforming devices | |
| GB664454A (en) | Improvements in or relating to wave-guide structure | |
| GB577662A (en) | Improvements in resonators for use in wave-guide electrical communication systems | |
| GB654106A (en) | Improvements in wave guides | |
| GB649301A (en) | Improvements in or relating to ultra high frequency radio apparatus employing wave guides | |
| GB684887A (en) | Improvements in or relating to electromagnetic waveguides | |
| GB772631A (en) | Improvements in or relating to matching systems for wave guides | |
| GB668513A (en) | Improvements in or relating to high-frequency coupling devices | |
| GB584668A (en) | Improvements in or relating to apparatus for measuring voltages in high frequency electrical transmission lines | |
| CA496548A (en) | Variable impedance wave guide matching transformer | |
| GB620773A (en) | Improvements in electromagnetic waveguides | |
| GB943702A (en) | Improvements in or relating to apparatus for deriving from input electromagnetic waves electromagnetic waves having a frequency which is an integral multiple of that of the input waves | |
| GB742948A (en) | Improvements in or relating to apparatus for measuring the magnitude and position ofa standing wave in a waveguide section | |
| GB584444A (en) | Improvements in or relating to high-frequency apparatus embodying impedance-matchingtransformers | |
| GB780231A (en) | Electromagnetic wave filters of large bandwidth | |
| CH300180A (en) | Very high frequency device with an electric discharge tube. | |
| FR2310639A1 (en) | Coaxial and rectangular waveguide impedance matching - is variable between ten and one hundred ohms using three pistons | |
| GB639145A (en) | Improvements in and relating to line sections for use at high radio frequencies |