GB612407A - Improvements in or relating to impedance transformers - Google Patents

Improvements in or relating to impedance transformers

Info

Publication number
GB612407A
GB612407A GB10471/43A GB1047143A GB612407A GB 612407 A GB612407 A GB 612407A GB 10471/43 A GB10471/43 A GB 10471/43A GB 1047143 A GB1047143 A GB 1047143A GB 612407 A GB612407 A GB 612407A
Authority
GB
United Kingdom
Prior art keywords
adjustable
line
concentric
lines
reactance means
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
Application number
GB10471/43A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sperry Gyroscope Co Inc
Original Assignee
Sperry Gyroscope Co Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from US448992A external-priority patent/US2438912A/en
Application filed by Sperry Gyroscope Co Inc filed Critical Sperry Gyroscope Co Inc
Publication of GB612407A publication Critical patent/GB612407A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/24—Terminating devices
    • H01P1/28—Short-circuiting plungers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/202—Coaxial filters
    • 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

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Measurement Of Resistance Or Impedance (AREA)
  • Waveguides (AREA)

Abstract

612,407. Impedance transformers. SPERRY GYROSCOPE CO., Inc. June 28, 1943, No. 10471. Convention date, June 29, 1942. [Class 40 (viii)] [Also in Group XXXVI] An impedance transformer comprises a fixed length transmission line 83 connected by adjustable reactance means 87 to a second concentric line 98 which is connected by further adjustable reactance means 87<1> to a third fixed concentric line 83'. The length of section 98 and the difference in length of lines 83 and 83<1> are preferably odd multiples of one quarter of a wavelength. The adjustable elements are also concentric lines with moving plungers 88 and 88'. The latter bear spring fingers 93 and 96 which only make contact with the line at their tips 94 and 97 and are one quarter of a wavelength long. A current node thus occurs at the actual contact and power losses are thus minimized. The adjustable reactance means may be shunt connected to the fixed lines instead of series connected as shown and may be ganged for simultaneous adjustment. Specification 581,972 is referred to. The Specification as open to inspection under Sect. 91 comprises also an impedance transformer having two concentric line sections between which an adjustable short-circuited line is connected in shunt, the point of connection of this last being adjustable longitudinally of the first two sections. This subject-matter does not appear in the Specification as accepted.
GB10471/43A 1942-06-29 1943-06-28 Improvements in or relating to impedance transformers Expired GB612407A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US448992A US2438912A (en) 1942-06-29 1942-06-29 Impedance transformer
US749476A US2562909A (en) 1942-06-29 1947-05-21 Impedance transformer for concentric lines

Publications (1)

Publication Number Publication Date
GB612407A true GB612407A (en) 1948-11-12

Family

ID=27035558

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10471/43A Expired GB612407A (en) 1942-06-29 1943-06-28 Improvements in or relating to impedance transformers

Country Status (2)

Country Link
US (1) US2562909A (en)
GB (1) GB612407A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032845A (en) * 1975-06-19 1977-06-28 Automation Industries, Inc. Surface wave communication system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786184A (en) * 1950-11-25 1957-03-19 Alford Andrew Line stretcher
US3663901A (en) * 1970-02-27 1972-05-16 Amp Inc Tuned coaxial device

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1929878A (en) * 1932-02-29 1933-10-10 Int Communications Lab Inc Microray wavemeter
NL50321C (en) * 1937-02-08
US2213054A (en) * 1937-10-09 1940-08-27 Telefunken Gmbh Impedance matching device
DE723425C (en) * 1938-02-11 1942-08-05 Telefunken Gmbh Arrangement for coupling two Lecher lines for ultra-short waves
FR870323A (en) * 1939-07-15 1942-03-09 Pintsch Julius Kg Ultra-shortwave resonance device
US2267539A (en) * 1939-10-31 1941-12-23 Rca Corp Measuring instrument
US2373233A (en) * 1940-07-18 1945-04-10 Rca Corp High-frequency coupling circuit
US2401205A (en) * 1941-11-21 1946-05-28 Rca Corp Monitor probe for high-frequency transmission lines
US2438912A (en) * 1942-06-29 1948-04-06 Sperry Corp Impedance transformer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4032845A (en) * 1975-06-19 1977-06-28 Automation Industries, Inc. Surface wave communication system

Also Published As

Publication number Publication date
US2562909A (en) 1951-08-07

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