US2784380A - Electrical wave-guide system for producing a phase difference between two output waves and devices containing such a wave-guide system - Google Patents

Electrical wave-guide system for producing a phase difference between two output waves and devices containing such a wave-guide system Download PDF

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Publication number
US2784380A
US2784380A US280218A US28021852A US2784380A US 2784380 A US2784380 A US 2784380A US 280218 A US280218 A US 280218A US 28021852 A US28021852 A US 28021852A US 2784380 A US2784380 A US 2784380A
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US
United States
Prior art keywords
wave
guide system
guide
phase difference
waves
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Expired - Lifetime
Application number
US280218A
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English (en)
Inventor
Lindt Willem Jacobus Van De
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Hartford National Bank and Trust Co
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Hartford National Bank and Trust Co
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Publication date
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/18—Phase-shifters
    • H01P1/182—Waveguide phase-shifters

Definitions

  • This invention relates to electrical wave-guide systems for producing a phase difference between two output waves and to devices comprising such a wave-guide systern.
  • the invention is based on such a system formed by two wave-guides, of which the first has a length k and a rectangular sectional area having a long side a and a short side b and the second has a length l, differing from k and a rectangular sectional area having a long side and a short side d, waves having equal phases being supplied to the wave-guides on the input side thereof and the output waves being taken from the output side thereof.
  • the wave-guide system according to the invent-ion is characterized in that the values of a and 0, both on the input side and on the output side of the wave-guide concerned are equal to an, whilst a and c for at least one of the waveguides between the input and the output have extreme values, aao and cao respectively being small with respect to an and in that O1O2 3a0(kl), where
  • Fig. 1 shows a known wave-guide system
  • Fig. 3 shows a wave-guide system according to the invention and Fig. 2 is a graph, with reference to which the operations of the wave-guide systems shown in Figs. 1 and 3 will be compared with one another.
  • phase dilIerence is required to be 180 and in a push-pull TR-switch 90. It is known that any phase difference can be pr0- quizd with the use of the wave-guide system shown in Fig. 1.
  • This system comprises the wave guides 1 and 2.
  • the wave guide 1 has a length k and a rectangular sectional area having a long side no and a short side b.
  • the wave guide 2 has a length l and a rectangular sectional area h-aving a long side an and a short side :2.
  • the two wave-guides have a constant sectional area.
  • Such rectangular waveguides are, in general, used for waves having a length A, of which the frequency is comparatively little in excess of the lowest critical frequency.
  • These waves are of the type H10, where a so-called TE kind of oscillation occurs. More particularly, A is chosen to be such that waves of other kinds of oscillation do not occur. This is the case when a0 2ao.
  • wave-guide In the wave-guide occurs a wave having a length of A which, as is known, is not equal to A, but is 2,784,380 C Fatehted, s. 1 57 If waves of equal phases are supplied to the input sides 3 and 4 of the wave guides 1 and 2, waves having a definite phase difference can be taken fromthe output sides 5 and 6 of these wave guides. It is simply evident that Consequently, by correct choice of k and 1, any desired phase displacement may be obtained.
  • phase displacement should not vary with the frequency or the wave length.
  • a constant phase displacement of 180 is required for a definite frequency range. It is obvious that the system shown in Fig. 1 does notfulfill this requirement, since it follows from (1) and (2) that, if A varies, also A and hence will vary. This is the situation indicated by the line A of Fig. 2.
  • the two wave-guides have near the ends a width an.
  • the width a of the wave-guide 1 exhibits, as a function of the length co-ordinate s a maximum between the ends, whereas 'the width c of the wave-guide 2 exhibits a minimum as a function of s.
  • phase displacement s which occurs here between the waves taken from the output sides 5 and 6, if waves having equal phases are supplied to the input sides 3 and 4, no longer varies with the wavelength in a definite wavelength range.
  • This wavelength range will lie in the aforesaid range, where ao 2ao and hence be serviceable in this system, if
  • 01 and 02 have a simple geometrical function. They indicate the magnification of the upper surface of the wave-guide, which is due to the fact that the width is not constant.
  • O1 is equal to the sum of the cross-hatched surfaces 7 and 8
  • the sum of the cross-hatched surfaces '9 and 10 is equal to -02.
  • the sign is due to the fact that in this case the upper surfaceh-as become smaller than it would be with a constant width as.
  • Fig. 2 shows the variation of q& as a function of h and k for the wave-guide system according to the invention.
  • This variation, which is indicated by the line B, is substantially fiat, which means that is substantially independent in this case of A and k and remains substantially 90'.
  • One of the surfaces 01 and 02 may be zero, without any objection. This means that one of the two wave guides 1 and 2 may have a constant width as. It should be noted that the dimensions b and d need fulfill only the normal requirements for waveguides.
  • a wave-guide system as claimed in claim 1, characterized in that the value of is at least substantially equal to a whole numeral.

Landscapes

  • Waveguide Switches, Polarizers, And Phase Shifters (AREA)
US280218A 1951-04-20 1952-04-03 Electrical wave-guide system for producing a phase difference between two output waves and devices containing such a wave-guide system Expired - Lifetime US2784380A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL302328X 1951-04-20

Publications (1)

Publication Number Publication Date
US2784380A true US2784380A (en) 1957-03-05

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ID=19783346

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Application Number Title Priority Date Filing Date
US280218A Expired - Lifetime US2784380A (en) 1951-04-20 1952-04-03 Electrical wave-guide system for producing a phase difference between two output waves and devices containing such a wave-guide system

Country Status (7)

Country Link
US (1) US2784380A (enrdf_load_stackoverflow)
BE (1) BE510772A (enrdf_load_stackoverflow)
CH (1) CH302328A (enrdf_load_stackoverflow)
DE (1) DE912235C (enrdf_load_stackoverflow)
FR (1) FR1054664A (enrdf_load_stackoverflow)
GB (1) GB706824A (enrdf_load_stackoverflow)
NL (2) NL160685B (enrdf_load_stackoverflow)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903581A (en) * 1956-06-29 1959-09-08 Dean O Kippenhan Phase detector
EP0178259A3 (de) * 1984-10-10 1988-07-20 HUBER & SUHNER AG KABEL-, KAUTSCHUK-, KUNSTSTOFF-WERKE Hohlleiter mit Primärstrahler
WO2022137466A1 (ja) * 2020-12-24 2022-06-30 日本電信電話株式会社 移相器
WO2022137465A1 (ja) * 2020-12-24 2022-06-30 日本電信電話株式会社 導波菅

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2129669A (en) * 1937-03-30 1938-09-13 Bell Telephone Labor Inc Guided wave transmission
US2411872A (en) * 1942-06-11 1946-12-03 Bell Telephone Labor Inc Microwave directive antenna
US2543425A (en) * 1945-06-14 1951-02-27 Malcom W P Strandberg Squeezable wave guide for line stretching
US2593120A (en) * 1945-03-08 1952-04-15 Us Sec War Wave guide transmission system
US2679631A (en) * 1950-10-02 1954-05-25 Rca Corp Power divider

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2129669A (en) * 1937-03-30 1938-09-13 Bell Telephone Labor Inc Guided wave transmission
US2411872A (en) * 1942-06-11 1946-12-03 Bell Telephone Labor Inc Microwave directive antenna
US2593120A (en) * 1945-03-08 1952-04-15 Us Sec War Wave guide transmission system
US2543425A (en) * 1945-06-14 1951-02-27 Malcom W P Strandberg Squeezable wave guide for line stretching
US2679631A (en) * 1950-10-02 1954-05-25 Rca Corp Power divider

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2903581A (en) * 1956-06-29 1959-09-08 Dean O Kippenhan Phase detector
EP0178259A3 (de) * 1984-10-10 1988-07-20 HUBER & SUHNER AG KABEL-, KAUTSCHUK-, KUNSTSTOFF-WERKE Hohlleiter mit Primärstrahler
WO2022137466A1 (ja) * 2020-12-24 2022-06-30 日本電信電話株式会社 移相器
WO2022137465A1 (ja) * 2020-12-24 2022-06-30 日本電信電話株式会社 導波菅

Also Published As

Publication number Publication date
CH302328A (de) 1954-10-15
GB706824A (en) 1954-04-07
BE510772A (enrdf_load_stackoverflow)
DE912235C (de) 1954-05-28
FR1054664A (fr) 1954-02-12
NL160685B (nl)
NL76192C (enrdf_load_stackoverflow)

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