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US4642588A Expired / Lapsed US ⏱️ 0.0 years remaining

Method for adjustment of variable delay line

Assignee: Elmec Corp
•
Filing: 1984-05-22
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Granted: 1987-02-10
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Expires: 2004-05-22
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Abstract

Abstract This invention aims to provide a method of adjustment for a variable delay line which is provided with two delay line elements of dissimilar delay times and switch means capable of selectively switching from one to the other of the two delay line elements and adapted to enable the delay time to be digitally increased or decreased by the delay time difference produced by the selective switching between the delay time elements. This method allows the delay time to be finely adjusted with high accuracy of the order of 1 to some tens of ps by changing the delay time of either of the two delay line elements which has a smaller delay time than the other.

Inventors

  • 👤 Kazuo Kameya

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 13:34
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/30; H03H7/34; H03H7/345

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 145 words
A method for the adjustment of a variable delay line, comprising: configuring a variable delay line with two delay line elements of dissimilar delay times, the element having the smaller delay time comprising a microstrip line with a conductor and the element having the larger delay time comprising an inductance element having a conductor wound in a plurality of turns in the shape of a solenoid and one or more capacitors interconnecting the conductor and the ground; selectively switching from one to the other of said two delay line elements to increase or decrease the delay time by a delay time difference produced by said selective switching between said two delay line elements; and varying the delay time of the delay line element which has the smaller delay time by selectively varying the effective physical length of the conductor to achieve a desired delay time.
Claim 2
Independent Claim 145 words
A method for the adjustment of a variable delay line, comprising: configuring a variable delay line with two delay line elements of dissimilar delay times, the element having the smaller delay time comprising a microstrip line with a conductor and the element having the larger delay time comprising an inductance element having a conductor wound in a plurality of turns in the shape of a solenoid and one or more capacitors interconnecting the conductor and the ground; selectively switching from one to the other of said two delay line elements to increase or decrease the delay time by a delay time difference produced by said selective switching between said two delay line elements; and varying the delay time of the delay line element which has the smaller delay time by selectively varying the effective physical length of the conductor to achieve a desired delay time.
Claim 3
Independent Claim 111 words
A method for the adjustment of a variable delay line, comprising: configuring a variable delay line with two delay line elements of dissimilar delay times, the element having the smaller delay time comprising a microstrip line with a conductor; selectively switching from one to the other of said two delay line elements to increase or decrease the delay time by a delay time difference produced by said selective switching between said two delay line elements; and varying the delay time of the delay line element which has the smaller delay time by selectively varying the effective physical length of the conductor to achieve a desired delay time by notching the conductor.
Claim 4
Independent Claim 111 words
A method for the adjustment of a variable delay line, comprising: configuring a variable delay line with two delay line elements of dissimilar delay times, the element having the smaller delay time comprising a microstrip line with a conductor; selectively switching from one to the other of said two delay line elements to increase or decrease the delay time by a delay time difference produced by said selective switching between said two delay line elements; and varying the delay time of the delay line element which has the smaller delay time by selectively varying the effective physical length of the conductor to achieve a desired delay time by notching the conductor.
Claim 5
Independent Claim 167 words
A method for the adjustment of a variable delay line, comprising: configuring a delay line having joined on cascade connection a plurality of variable delay lines as unit blocks, each provided with two delay line elements of dissimilar delay times, the element having the smaller delay time comprising a microstrip line with a conductor and the element having the larger delay time comprising an inductance element having a conductor wound in a plurality of turns in the shape of a solenoid and one or more capacitors interconnecting the conductor and the ground; selectively switching from one to the other of said two delay line elements to increase or decrease the delay time by a delay time difference produced by said selective switching between said two delay line elements; and varying the delay time of the delay line element in each of said delay line blocks which has the smaller delay time by selectively varying the effective physical length of the conductor to achieve a desired delay time.
Claim 6
Independent Claim 167 words
A method for the adjustment of a variable delay line, comprising: configuring a delay line having joined on cascade connection a plurality of variable delay lines as unit blocks, each provided with two delay line elements of dissimilar delay times, the element having the smaller delay time comprising a microstrip line with a conductor and the element having the larger delay time comprising an inductance element having a conductor wound in a plurality of turns in the shape of a solenoid and one or more capacitors interconnecting the conductor and the ground; selectively switching from one to the other of said two delay line elements to increase or decrease the delay time by a delay time difference produced by said selective switching between said two delay line elements; and varying the delay time of the delay line element in each of said delay line blocks which has the smaller delay time by selectively varying the effective physical length of the conductor to achieve a desired delay time.
Claim 7
Independent Claim 133 words
A method for the adjustment of a variable delay line, comprising: configuring a delay line having joined on cascade connection a plurality of variable delay lines as unit blocks, each provided with two delay line elements of dissimilar delay times, the element having the smaller delay time being a microstrip line with a conductor; selectively switching from one to the other of said two delay line elements to increase or decrease the delay time by a delay time difference produced by said selective switching between said two delay line elements; and varying the delay time of the delay line element in each of said delay line blocks which has the smaller delay time by selectively varying the effective physical length of the conductor to achieve a desired delay time by notching the conductor.
Claim 8
Independent Claim 133 words
A method for the adjustment of a variable delay line, comprising: configuring a delay line having joined on cascade connection a plurality of variable delay lines as unit blocks, each provided with two delay line elements of dissimilar delay times, the element having the smaller delay time being a microstrip line with a conductor; selectively switching from one to the other of said two delay line elements to increase or decrease the delay time by a delay time difference produced by said selective switching between said two delay line elements; and varying the delay time of the delay line element in each of said delay line blocks which has the smaller delay time by selectively varying the effective physical length of the conductor to achieve a desired delay time by notching the conductor.

References Cited (Backward Citations)

US2961620A Cited
US3238300A Cited
US3584376A Cited
US3585535A Cited
US3656179A Cited
US3781722A Cited
US4160220A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1990-02-09 1990-08-11 1991-02-10 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1994-02-09 1994-08-11 1995-02-10 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1998-02-09 1998-08-11 1999-02-10 $7700.00 Window Closed / Lapsed

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