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US3603900A Expired / Lapsed US ⏱️ 0.0 years remaining

Distributed constant rc network

Assignee: NEC Corp
•
Filing: 1968-10-07
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Granted: 1971-09-07
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Expires: 1988-10-07
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Abstract

Abstract Distributed constant RC network apparatus is provided in accordance with this invention having a pair of complex attenuation poles which reside on the plane defined by the complex angular frequency s gamma +j omega . According to this invention a plurality of fundamental circuit means containing various unit elements of a distributed constant RC network are developed. Thereafter, two or more of such plurality of fundamental circuit means may be combined in a predetermined manner to form various embodiments of uniform equal length distributed constant RC network apparatus, according to this invention, having a pair of complex attenuation poles located on an arbitrary point on the plane defined by the complex angular frequency.

Inventors

  • 👤 Kozo Hatori
  • 👤 Hitoshi Watanabe
  • 👤 Nobuyoshi Yoshida

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 15:07
CPC Classifications
H; H03; H03H; H03H1/00; H03H1/02

Claims Analysis

Total Claims: 17
Claim 1
Independent Claim 223 words
A uniform equal length distributed constant RC circuit of a preassigned type in which said RC is the pr product of R representing a resistance value per unit length and C representing a capacitance value per unit length, comprising: a plurality of First, Second, Third and Fourth unit elements having different characteristic impedances; each of said First and Second elements being at least two in number and each of said Third and Fourth elements being at least one in number; each of said First, Second, Third and Fourth elements being a distributed constant RC network; said First and Second elements connected in cascade in a First-Second-Second-First order between two input terminals and two output terminals; said Third and Fourth elements connected in cascade in a Third and Fourth order; said Third element in said Third-Fourth order having two input terminals of which one is connected to one of said input terminals of said First-Second-Second-First order and of which a second is connected to a predetermined one of said output terminals of said First-Second-Second-First order; said Fourth element in said Third-Fourth order having output terminals provided with a preselected termination; whereby said circuit is formed as a preassigned type with a pair of complex attenuation poles at a predetermined point on a plane defined by a complex angular frequency s gamma +j omega .
Claim 2
Dependent Claim 223 words
A uniform equal length distributed constant RC circuit of a preassigned type in which said RC is the pr product of R representing a resistance value per unit length and C representing a capacitance value per unit length, comprising: a plurality of First, Second, Third and Fourth unit elements having different characteristic impedances; each of said First and Second elements being at least two in number and each of said Third and Fourth elements being at least one in number; each of said First, Second, Third and Fourth elements being a distributed constant RC network; said First and Second elements connected in cascade in a First-Second-Second-First order between two input terminals and two output terminals; said Third and Fourth elements connected in cascade in a Third and Fourth order; said Third element in said Third-Fourth order having two input terminals of which one is connected to one of said input terminals of said First-Second-Second-First order and of which a second is connected to a predetermined one of said output terminals of said First-Second-Second-First order; said Fourth element in said Third-Fourth order having output terminals provided with a preselected termination; whereby said circuit is formed as a preassigned type with a pair of complex attenuation poles at a predetermined point on a plane defined by a complex angular frequency s gamma +j omega .
Claim 3
Dependent Claim 54 words
The circuit according to claim 1 in which other terminals in said input and output terminals of said First-Second-Second-First element order are connected to a ground return to which said First and Second elements in said last-mentioned order are also connected to form said circuit as said preassigned type which is unbalanced to ground.
Claim 4
Dependent Claim 31 words
The circuit according to claim 2 in which said output terminals of said Fourth element in said Third-Fourth element order are provided with said preselected termination which is an open circuit.
Claim 5
Dependent Claim 31 words
The circuit according to claim 2 in which said output terminals of said Fourth element in said Third-Fourth element order are provided with said preselected termination which is a short circuit.
Claim 6
Dependent Claim 170 words
The circuit according to claim 1 which includes an additional plurality of First, Second, Third and Fourth elements identical in number and impedance characteristics with said first-mentioned First, Second, Third and Fourth elements, respectively; said additional First and Second elements connected in cascade in an additional First-Second-Second-First order between said input and output terminals of said first-mentioned First-Second-Second-First element order; said first-mentioned and said additional First-Second-Second-First element orders having a ground return; said additional Third and Fourth elements connected in cascade in an additional Third-Fourth Order; said additional Third element in said additional Third-Fourth element order having two input terminals of which one is connected to the other of said input terminals of said first-mentioned First-Second-Second-First element order and of which a second is connected to a second predetermined one of said output terminals of said last-mentioned order; said additional Fourth element in said additional Third-Fourth element order having output terminals provided with a preselected termination; whereby said circuit is formed as said preassigned type which is balanced to ground.
Claim 7
Dependent Claim 33 words
The circuit according to claim 5 in which said output terminals of said additional Fourth element in said additional Third-Fourth element order are provided with said preselected termination which is an open circuit.
Claim 8
Dependent Claim 33 words
The circuit according to claim 5 in which said output terminals of said additional Fourth element in said additional Third-Fourth element order are provided with said preselected termination which is a short circuit.
Claim 9
Dependent Claim 293 words
The circuit according to claim 5 which includes a plurality of Fifth unit elements, each having a characteristic impedance different from said characteristic impedances of each of said first-mentioned and additional First through Fourth elements and being a distributed constant RC network; each of said Fifth elements having two input terminals and two output terminals; a first of said Fifth elements having one of said input terminals thereof connected to said one input terminal of said first-mentioned First-Second-Second-First element order and said first of said Fifth elements having the other of said input terminals thereof connected to an output terminal of said last-mentioned order in correspondence with said last-mentioned one input terminal thereof; a second of said Fifth elements having one of said input terminals thereof connected to the other of said input terminals of said first-mentioned First-Second-Second-First element order and said second of said Fifth elements having the other of said input terminals thereof connected to an output terminal of said last-mentioned order in correspondence with said last-mentioned other input terminal thereof; each of said Fifth elements having said output terminals thereof provided with a preselected termination; said first-mentioned predetermined one output terminal of said first-mentioned First-Second-Second-First element order corresponding to said last-mentioned output terminal thereof whereby said second input terminal of said first-mentioned Third element is connected to said last-mentioned output terminal of said first-mentioned First-Second-Second-First element order in correspondence with said other input terminal thereof; said second predetermined output terminal of said first-mentioned First-Second-Second-First element order corresponding to said output terminal thereof in correspondence with said one input terminal thereof whereby said second input terminal of said additional Third element is connected to an output terminal of said first-mentioned First-Second-Second-First element order in correspondence with said one input terminal thereof.
Claim 10
Dependent Claim 30 words
The circuit according to claim 8 in which said output terminals of at least one of said Fifth elements are provided with said preselected termination which is a short circuit.
Claim 11
Dependent Claim 30 words
The circuit according to claim 8 in which said output terminals of at least one of said Fifth elements are provided with said preselected termination which is an open circuit.
Claim 12
Dependent Claim 223 words
A uniform equal length distributed constant RC circuit in which RC is the product of R representing a resistance value per unit length and C representing a capacitance value per unit length, comprising: a plurality of First, Second, Third and Fourth unit elements having different characteristic impedances; each of said First and Second elements being two in number and each of said Third and Fourth elements being one in number; each of said First through Fourth elements being a distributed constant RC network; said First and Second elements connected in cascade in a First-Second-Second-First order between two input terminals and two output terminals of which corresponding ones of said input and output terminals are connected to a ground return; said Third and Fourth elements connected in cascade in a Third-Fourth order; said Third element in said Third-Fourth order having two input terminals of which one is connected to the other of said input terminals of said First-Second-Second-Third order and of which a second is connected to the other of said output terminals of said last-mentioned order; said Fourth element having two output terminals provided with a preselected termination; whereby said circuit is formed as an unbalanced type with a pair of complex attenuation poles at a predetermined point on a plane defined by a complex angular frequency s gamma + j omega .
Claim 13
Dependent Claim 223 words
A uniform equal length distributed constant RC circuit in which RC is the product of R representing a resistance value per unit length and C representing a capacitance value per unit length, comprising: a plurality of First, Second, Third and Fourth unit elements having different characteristic impedances; each of said First and Second elements being two in number and each of said Third and Fourth elements being one in number; each of said First through Fourth elements being a distributed constant RC network; said First and Second elements connected in cascade in a First-Second-Second-First order between two input terminals and two output terminals of which corresponding ones of said input and output terminals are connected to a ground return; said Third and Fourth elements connected in cascade in a Third-Fourth order; said Third element in said Third-Fourth order having two input terminals of which one is connected to the other of said input terminals of said First-Second-Second-Third order and of which a second is connected to the other of said output terminals of said last-mentioned order; said Fourth element having two output terminals provided with a preselected termination; whereby said circuit is formed as an unbalanced type with a pair of complex attenuation poles at a predetermined point on a plane defined by a complex angular frequency s gamma + j omega .
Claim 14
Dependent Claim 312 words
A uniform equal length distributed constant RC circuit in which RC is the product of R representing a resistance value per unit length and C representing a capacitance value per unit length, comprising: a plurality of First, Second, Third and Fourth unit elements having different characteristic impedances; each of said First and Second elements being four in number and each of said Third and Fourth elements being two in number; each of said First through Fourth elements being a distributed constant RC network; said First and Second elements connected in two separate cascades, each in a First-Second-Second-First order, between two input terminals and two output terminals; said two First-Second-Second-First element orders having a ground return; one of each of said Third and Fourth elements connected in cascade in one Third-Fourth order; said Third element in said one Third-Fourth order having two input terminals of which one is connected to one of said input terminals of said First-Second-Second-First element orders and of which a second is connected to one of said output terminals of said last-mentioned orders in correspondence with said one input terminal thereof; another of each of said Third and Fourth elements is connected in cascade in another Third-Fourth order; said Third element in said another third-fourth order having two input terminals of which one is connected to the other of said input terminals of said First-Second-Second-First orders and of which a second is connected to the other of said output terminals of said last-mentioned orders in correspondence with said other input terminal thereof; said Fourth element in each of said one and another Third and Fourth orders having output terminals provided with a preselected termination; whereby said circuit is formed as a balanced type with a pair of complex attenuation poles at a predetermined point on a plane defined by a complex angular frequency s gamma + j omega .
Claim 15
Dependent Claim 312 words
A uniform equal length distributed constant RC circuit in which RC is the product of R representing a resistance value per unit length and C representing a capacitance value per unit length, comprising: a plurality of First, Second, Third and Fourth unit elements having different characteristic impedances; each of said First and Second elements being four in number and each of said Third and Fourth elements being two in number; each of said First through Fourth elements being a distributed constant RC network; said First and Second elements connected in two separate cascades, each in a First-Second-Second-First order, between two input terminals and two output terminals; said two First-Second-Second-First element orders having a ground return; one of each of said Third and Fourth elements connected in cascade in one Third-Fourth order; said Third element in said one Third-Fourth order having two input terminals of which one is connected to one of said input terminals of said First-Second-Second-First element orders and of which a second is connected to one of said output terminals of said last-mentioned orders in correspondence with said one input terminal thereof; another of each of said Third and Fourth elements is connected in cascade in another Third-Fourth order; said Third element in said another third-fourth order having two input terminals of which one is connected to the other of said input terminals of said First-Second-Second-First orders and of which a second is connected to the other of said output terminals of said last-mentioned orders in correspondence with said other input terminal thereof; said Fourth element in each of said one and another Third and Fourth orders having output terminals provided with a preselected termination; whereby said circuit is formed as a balanced type with a pair of complex attenuation poles at a predetermined point on a plane defined by a complex angular frequency s gamma + j omega .
Claim 16
Dependent Claim 412 words
A uniform equal length distributed RC circuit in which RC is a constant and the product of R representing a resistance value per unit length and C representing a capacitance value per unit length, comprising: a plurality of First, Second, Third, Fourth and Fifth unit elements having different characteristic impedances; each of said First and Second elements being four in number and each of said Third, Fourth and Fifth elements being two in number; each of said First through Fifth elements being a distributed constant RC network; said First and Second elements connected in two separate cascades, each in a First-Second-Second-First order, between two input terminals and two output terminals; said two First-Second-Second-First element orders having a common ground return; one of each of said Third and Fourth elements connecteD in cascade in one Third-Fourth order; said Third element in said one Third-Fourth order having two input terminals of which one is connected to one of said input terminals of said First-Second-Second-First element orders and the other of which is connected to one of said output terminals of said last-mentioned orders; another of each of said Third and Fourth elements in connected in cascade in another Third-Fourth order; said Third element in said another Third-Fourth order having two input terminals of which one is connected to the other of said input terminals of said First-Second-Second-Third orders in correspondence with said one output terminal thereof and another of which is connected to the other of said output terminals of said last-mentioned orders in correspondence with said one input terminal thereof; one of said Fifth elements having two input terminals of which one is connected to said one input terminal of said First-Second-Second-First orders and another of which is connected to said other output terminal thereof in correspondence with said last-mentioned one input terminal; a further of said Fifth elements having two input terminals of which one is connected to said other input terminal of said First-Second-Second-First element orders and another of which is connected to said one output terminal of said First-Second-Second-Third element orders in correspondence with said other input terminal thereof; each of said Fourth elements in said one and another Third-Fourth element orders and each of said Fifth elements having output terminals provided with preselected terminations; whereby said circuit is formed as a balanced type with a pair of complex attenuation poles at a predetermined point on a plane defined by a complex angular frequency s gamma + j omega .
Claim 17
Dependent Claim 412 words
A uniform equal length distributed RC circuit in which RC is a constant and the product of R representing a resistance value per unit length and C representing a capacitance value per unit length, comprising: a plurality of First, Second, Third, Fourth and Fifth unit elements having different characteristic impedances; each of said First and Second elements being four in number and each of said Third, Fourth and Fifth elements being two in number; each of said First through Fifth elements being a distributed constant RC network; said First and Second elements connected in two separate cascades, each in a First-Second-Second-First order, between two input terminals and two output terminals; said two First-Second-Second-First element orders having a common ground return; one of each of said Third and Fourth elements connecteD in cascade in one Third-Fourth order; said Third element in said one Third-Fourth order having two input terminals of which one is connected to one of said input terminals of said First-Second-Second-First element orders and the other of which is connected to one of said output terminals of said last-mentioned orders; another of each of said Third and Fourth elements in connected in cascade in another Third-Fourth order; said Third element in said another Third-Fourth order having two input terminals of which one is connected to the other of said input terminals of said First-Second-Second-Third orders in correspondence with said one output terminal thereof and another of which is connected to the other of said output terminals of said last-mentioned orders in correspondence with said one input terminal thereof; one of said Fifth elements having two input terminals of which one is connected to said one input terminal of said First-Second-Second-First orders and another of which is connected to said other output terminal thereof in correspondence with said last-mentioned one input terminal; a further of said Fifth elements having two input terminals of which one is connected to said other input terminal of said First-Second-Second-First element orders and another of which is connected to said one output terminal of said First-Second-Second-Third element orders in correspondence with said other input terminal thereof; each of said Fourth elements in said one and another Third-Fourth element orders and each of said Fifth elements having output terminals provided with preselected terminations; whereby said circuit is formed as a balanced type with a pair of complex attenuation poles at a predetermined point on a plane defined by a complex angular frequency s gamma + j omega .

References Cited (Backward Citations)

US3371295A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-06 1975-03-08 1975-09-07 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-06 1979-03-08 1979-09-07 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-06 1983-03-08 1983-09-07 $7700.00 Window Closed / Lapsed

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