GB597922A - High-frequency impedance-matching device - Google Patents
High-frequency impedance-matching deviceInfo
- Publication number
- GB597922A GB597922A GB27438/45A GB2743845A GB597922A GB 597922 A GB597922 A GB 597922A GB 27438/45 A GB27438/45 A GB 27438/45A GB 2743845 A GB2743845 A GB 2743845A GB 597922 A GB597922 A GB 597922A
- Authority
- GB
- United Kingdom
- Prior art keywords
- members
- impedance
- quarter
- line
- long
- 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
- Waveguide Aerials (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
597,922. Impedance-matching. HAZELTINE CORPORATION. Oct. 18, 1945, No. 27438. Convention date, Nov. 16, 1944. [Class 40 (iii)] Impedances Z1, Z2, which may be complex, are matched and their reactive components are cancelled by means of a section 11, 12 of transmission line, less than (and preferably a quarter or three-quarters of) a wavelength long, and having a characteristic impedance ZO' ; and of two or more sliable members 15, 16 which change the characteristic impedance to a suitable value Z0<11> and are each about onequarter as long as the line 11, 12 physically, and not longer than a quarter of a wavelength electrically. The dimensions are such that if the members 15, 16 are of conductive or dielectric material, Z0<1>> #(Z1Z2) >Z0<11>, but if they are of magnetic material Z0<11> > #(X1X2) > Z0<1>. The Specification describes, with reference to Figs. 2, 4 (not shown), a graphical method for positioning the members 15, 16 so as to obtain any desired complex transformation ratio within the available range. The members may be clamped in position by means of screws 25 which are accessible through a slot 40. A coaxial line of impedance Z2 connected at 31 may be coupled to two coaxial lines, each of impedance Z2, i.e. 2Z1, which are connected in parallel at 30, 30, by means of a tee-shaped termination 27, 29, with a conductive end-plate at 35, the members 15, 16 being so placed as to give a 2: 1 tranformation ratio. Specifications 572,739 and 597,923 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US563713A US2403252A (en) | 1944-11-16 | 1944-11-16 | High-frequency impedance-matching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB597922A true GB597922A (en) | 1948-02-05 |
Family
ID=24251591
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB27438/45A Expired GB597922A (en) | 1944-11-16 | 1945-10-18 | High-frequency impedance-matching device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2403252A (en) |
| BE (1) | BE474967A (en) |
| FR (1) | FR951364A (en) |
| GB (1) | GB597922A (en) |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3124747A (en) * | 1964-03-10 | hermach | ||
| US2594983A (en) * | 1945-08-30 | 1952-04-29 | Us Sec War | Transmission line |
| US2711517A (en) * | 1945-09-14 | 1955-06-21 | Krutter Harry | Corrugated wave guide |
| US2496321A (en) * | 1945-10-29 | 1950-02-07 | Motorola Inc | Tunable resonant system |
| US2492404A (en) * | 1945-11-10 | 1949-12-27 | Rca Corp | Construction of ultra high frequency broad-band antennas |
| US2484798A (en) * | 1945-12-29 | 1949-10-11 | Philco Corp | Signal transmission system |
| US2557567A (en) * | 1946-03-19 | 1951-06-19 | Victor H Rumsey | Coaxial transmission line filter system |
| US2623946A (en) * | 1947-03-29 | 1952-12-30 | Sperry Corp | Transmission line transition |
| US2627550A (en) * | 1949-05-18 | 1953-02-03 | Bell Telephone Labor Inc | Adjustable impedance transformer |
| US2900610A (en) * | 1955-05-19 | 1959-08-18 | Richard W Allen | Variable impedance transformer |
| DE1146144B (en) * | 1961-08-11 | 1963-03-28 | Fuba Antennenwerke Hans Kolbe | Impedance converter |
| US3200355A (en) * | 1961-11-24 | 1965-08-10 | Itt | Electrical connector having rf filter |
| US3792385A (en) * | 1972-11-06 | 1974-02-12 | Rca Corp | Coaxial magnetic slug tuner |
| US4700159A (en) * | 1985-03-29 | 1987-10-13 | Weinschel Engineering Co., Inc. | Support structure for coaxial transmission line using spaced dielectric balls |
| DE4122290C1 (en) * | 1991-07-05 | 1992-11-19 | Ant Nachrichtentechnik Gmbh, 7150 Backnang, De | |
| US6844803B2 (en) * | 2002-02-15 | 2005-01-18 | Mci, Inc. | Thirty-degree length impedance transformer |
| FR2888670B1 (en) * | 2005-07-18 | 2009-11-20 | Centre Nat Rech Scient | AUTOMATIC COAXIAL IMPEDANCE ADAPTER |
| US7808341B2 (en) * | 2007-02-21 | 2010-10-05 | Kyocera America, Inc. | Broadband RF connector interconnect for multilayer electronic packages |
-
0
- BE BE474967D patent/BE474967A/xx unknown
-
1944
- 1944-11-16 US US563713A patent/US2403252A/en not_active Expired - Lifetime
-
1945
- 1945-10-18 GB GB27438/45A patent/GB597922A/en not_active Expired
-
1947
- 1947-08-06 FR FR951364D patent/FR951364A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR951364A (en) | 1949-10-24 |
| BE474967A (en) | |
| US2403252A (en) | 1946-07-02 |
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