GB1231930A - - Google Patents
Info
- Publication number
- GB1231930A GB1231930A GB1231930DA GB1231930A GB 1231930 A GB1231930 A GB 1231930A GB 1231930D A GB1231930D A GB 1231930DA GB 1231930 A GB1231930 A GB 1231930A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bulges
- waveguide
- section
- max
- walls
- 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
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/12—Hollow waveguides
- H01P3/14—Hollow waveguides flexible
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S138/00—Pipes and tubular conduits
- Y10S138/11—Shape
Landscapes
- Waveguides (AREA)
- Waveguide Aerials (AREA)
Abstract
1,231,930. Waveguides. TELEFUNKEN PATENTVERWERTUNGS - G.m.b.H. 13 Aug., 1969 [21 Sept., 1968], No. 40541/69. Heading H1W. A bendable waveguide has a curvilinear, approximately rectangular cross-section, comprising one or more inward bulges forming ridges, the ratio of max. depth to max. width (b/a) being less than 0À5. The distance d is such that propagation of undesired modes is prevented. The waveguide may have (as shown) a rectangular external section, or an external section resembling the internal section (Fig. 2, not shown). In the latter case, the waveguide may be constructed from a seamless metal tube and the walls may be thinner in the vicinity of the bulges than elsewhere whereby flexibility is improved. The inward facing walls of the bulges may be flat. The space between the bulges may be filled with dielectric material 3.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE1790171A DE1790171C2 (en) | 1968-09-21 | 1968-09-21 | Broadband waveguide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1231930A true GB1231930A (en) | 1971-05-12 |
Family
ID=5706922
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1231930D Expired GB1231930A (en) | 1968-09-21 | 1969-08-13 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3659234A (en) |
| JP (1) | JPS4825157B1 (en) |
| BR (1) | BR6910653D0 (en) |
| DE (1) | DE1790171C2 (en) |
| FR (1) | FR2018577A1 (en) |
| GB (1) | GB1231930A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2059494B2 (en) * | 1970-12-03 | 1972-03-16 | Licentia Gmbh | FLEXIBLE HOLLOW CONDUCTOR |
| US4603942A (en) * | 1983-10-11 | 1986-08-05 | General Dynamics, Pomona Division | Flexible, dielectric millimeter waveguide |
| US4978934A (en) * | 1989-06-12 | 1990-12-18 | Andrew Corportion | Semi-flexible double-ridge waveguide |
| JP2800636B2 (en) * | 1993-05-12 | 1998-09-21 | 日本電気株式会社 | Flexible waveguide |
| JP7152716B2 (en) * | 2018-10-09 | 2022-10-13 | オリンパス株式会社 | Flexible waveguide, image transmission device having flexible waveguide, endoscope and endoscope system having flexible waveguide |
| US11462808B2 (en) * | 2020-05-19 | 2022-10-04 | Roos Instruments, Inc. | Conformable waveguide having an obround cross section, a tool for manually conforming an obround waveguide and a method for forming the conformable waveguide |
| US11936091B2 (en) * | 2020-12-11 | 2024-03-19 | Rtx Corporation | Waveguide apparatus including channel segments having surfaces that are angularly joined at a junction or a corner |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE892003C (en) * | 1953-08-20 | Siemens iS. Halske Aktiengesellschaft, Berlin und München | Dielectric tubular cable with a flattened cross-section for the transmission of ultra-short waves | |
| US1023163A (en) * | 1911-02-02 | 1912-04-16 | Charles Nicholas Monsarrat | Hollow section. |
| US1839919A (en) * | 1927-03-26 | 1932-01-05 | Hall Charles Ward | Seamless hollow metallic section and process of making the same |
| US1928009A (en) * | 1927-12-27 | 1933-09-26 | Firm Dornier Metallbauten G M | Hollow metal beam |
| US1859259A (en) * | 1929-07-08 | 1932-05-17 | Chamberlain | Electrical wiring conduit |
| NL54984C (en) * | 1937-09-15 | |||
| FR49457E (en) * | 1937-11-23 | 1939-05-01 | Materiel Telephonique | Very high frequency wave transmission systems |
| US2406838A (en) * | 1943-06-28 | 1946-09-03 | Francis M Kepler | Method of forming bent tubing |
| GB575228A (en) * | 1944-03-08 | 1946-02-08 | William Douglas Allen | Improvements in or relating to electro-magnetic wave guides |
| DE1025473B (en) * | 1954-04-30 | 1958-03-06 | Siemens Ag | Flexible metallic waveguide for the transmission of waveguide waves |
| US3205501A (en) * | 1959-10-01 | 1965-09-07 | Gen Electric | Closely spaced stocked waveguide antenna array employing reciprocal ridged wageguide phase shifters |
| DE1134428B (en) * | 1960-09-29 | 1962-08-09 | Siemens Ag | Method for laying hollow pipes |
| US3239002A (en) * | 1964-01-06 | 1966-03-08 | Young Radiator Co | Tube formation for structuring heatexchanger core-units |
| DE1490782A1 (en) * | 1964-04-04 | 1969-07-03 | Telefunken Patent | Waveguide |
| DE1490804A1 (en) * | 1964-08-06 | 1969-07-17 | Telefunken Patent | Loaded hollow pipeline |
| GB1134041A (en) * | 1965-01-05 | 1968-11-20 | Btr Industries Ltd | An improved tube |
| DE1590675C3 (en) * | 1965-10-01 | 1974-07-18 | Telefunken Patentverwertungsgesellschaft Mbh, 7900 Ulm | Waveguide |
-
1968
- 1968-09-21 DE DE1790171A patent/DE1790171C2/en not_active Expired
-
1969
- 1969-07-11 BR BR210653/69A patent/BR6910653D0/en unknown
- 1969-08-13 GB GB1231930D patent/GB1231930A/en not_active Expired
- 1969-09-09 US US856272A patent/US3659234A/en not_active Expired - Lifetime
- 1969-09-12 JP JP44072679A patent/JPS4825157B1/ja active Pending
- 1969-09-18 FR FR6931793A patent/FR2018577A1/fr not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| JPS4825157B1 (en) | 1973-07-26 |
| DE1790171B1 (en) | 1974-01-10 |
| DE1790171C2 (en) | 1974-08-01 |
| FR2018577A1 (en) | 1970-05-29 |
| BR6910653D0 (en) | 1973-02-08 |
| US3659234A (en) | 1972-04-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PS | Patent sealed [section 19, patents act 1949] | ||
| PCNP | Patent ceased through non-payment of renewal fee |