US4743868A — High frequency filter for electric instruments

Claim 1

Independent Claim 164 words

A strip-line high frequency filter adapted for use in combination with an internal electronic circuit element, of the flat-plate type such as a hybrid integrated circuit element or a transistor array, arranged to be carried on a circuit board of an insulation material and to be connected to an external electric circuit, the high frequency filter comprising: a flat electrode plate having first and second surfaces and mounted on said circuit board to be grounded; an insulation substance layer integrally formed on the first surface of said electrode plate, said insulation substance layer being made of a dielectric material whose dielectric constant decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto; and an electrode strip integrally formed on said insulation substance layer for connection to said external electric circuit; wherein said internal electronic circuit element is integrally provided on the second surface of said electrode plate to be carried in place and connected to said electrode strip.

Claim 2

Dependent Claim 164 words

A strip-line high frequency filter adapted for use in combination with an internal electronic circuit element, of the flat-plate type such as a hybrid integrated circuit element or a transistor array, arranged to be carried on a circuit board of an insulation material and to be connected to an external electric circuit, the high frequency filter comprising: a flat electrode plate having first and second surfaces and mounted on said circuit board to be grounded; an insulation substance layer integrally formed on the first surface of said electrode plate, said insulation substance layer being made of a dielectric material whose dielectric constant decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto; and an electrode strip integrally formed on said insulation substance layer for connection to said external electric circuit; wherein said internal electronic circuit element is integrally provided on the second surface of said electrode plate to be carried in place and connected to said electrode strip.

Claim 3

Dependent Claim 52 words

A strip-line high frequency filter as claimed in claim 1, wherein said flat electrode plate is arranged perpendicularly to said circuit board and fixedly mounted on said circuit board at the lower end thereof, and wherein said internal electronic circuit element is secured to the second surface of said flat electrode plate.

Claim 4

Dependent Claim 70 words

A strip-line high frequency filter as claimed in claim 1, wherein said flat electrode plate is arranged in parallel with said circuit board and fixedly mounted on said circuit board at the opposite ends thereof, and wherein said internal electronic circuit element is secured to the upper surface of said flat electrode plate and said insulation substance layer is integrally formed on the bottom surface of said flat electrode plate.

Claim 5

Dependent Claim 37 words

A strip-line high frequency filter as claimed in claim 3, wherein said internal electronic circuit element is in the form of an integrated circuit element disposed within said insulation substance layer and connected to said electrode strip.

Claim 6

Dependent Claim 167 words

A strip-line high frequency filter adapted for use in combination with an itnernal electronic circuit element of the flat-plate type such as a hybrid integrated circuit element or a transistor array arranged to carried on a circuit board of an insulation material and to be connected to an external electric circuit, the high frequency filter comprising: a common flat electrode plate having first and second surfaces and mounted on said circuit board to be grounded; an insulation substance layer integrally formed on the first surface of said electrode plate, said insulation substance layer being made of a dielectric material whose dielectric constant decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto; and a plurality of spaced electrode strips integrally formed on said insulation substance layer for connection to said external electric circuit; wherein said internal electronic circuit element is integrally provided on the second surface of said electrode plate to be carried in place and connected to said electrode strips.

Claim 7

Dependent Claim 167 words

A strip-line high frequency filter adapted for use in combination with an itnernal electronic circuit element of the flat-plate type such as a hybrid integrated circuit element or a transistor array arranged to carried on a circuit board of an insulation material and to be connected to an external electric circuit, the high frequency filter comprising: a common flat electrode plate having first and second surfaces and mounted on said circuit board to be grounded; an insulation substance layer integrally formed on the first surface of said electrode plate, said insulation substance layer being made of a dielectric material whose dielectric constant decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto; and a plurality of spaced electrode strips integrally formed on said insulation substance layer for connection to said external electric circuit; wherein said internal electronic circuit element is integrally provided on the second surface of said electrode plate to be carried in place and connected to said electrode strips.

Claim 8

Dependent Claim 67 words

A strip-line high frequency filter as claimed in claim 5, said flat electrode plate is arranged in parallel with said circuit board and fixedly mounted on said circuit board at the opposite ends thereof, and wherein said electrode strips are arranged in parallel to each other on said insulation substance layer and connected at their one ends to a socket for connection to said electronic circuit element.

Claim 9

Dependent Claim 64 words

A strip-line high frequency filter as claimed in claim 5, wherein said flat electrode plate is arranged perpendicularly to said circuit board and fixedly mounted on said circuit board at the lower end thereof, said electrode strips being arranged in parallel to each other on said insulation layer and connected at their one ends to a socket for connection to said electronic circuit element.

Claim 10

Dependent Claim 71 words

A strip-line frequency filter as claimed in claim 1, wherein said insulation substance layer includes a first section made of a dielectric material whose dielectric constant decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto and further includes a second section made of a magnetic material whose permeability decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto.

Claim 11

Dependent Claim 41 words

A strip-line high frequency filter as claimed in claim 8, wherein the first section of said insulation substance layer is made of a compound of ferro-niobate and ferrotungsten, and the second section of said insulation substance layer is made of ferrite.

Claim 12

Dependent Claim 63 words

A strip-line high frequency filter as claimed in claim 5, wherein said flat electrode plate is arranged in parallel with said circuit board and fixedly mounted on said circuit board at the opposite ends thereof, and wherein said internal electronic circuit element is in the form of an integrated circuit element disposed within said insulation substance layer and connected to said electrode strips.

Claim 13

Dependent Claim 150 words

A high frequency filter adapted for use in combination with an internal electronic circuit element arranged to be carried on a circuit board of an insulation material and to be connected to an external electric circuit, the high frequency filter comprising: an annular electrode plate mounted on said circuit board to be grounded, said electrode plate being provided at the inner periphery thereof with a cylindrical socket for connection to said electronic circuit element; an annular insulation substance layer integrally formed on said electrode plate, said insulation substance layer being made of a dielectric material whose dielectric constant decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto; and a plurality of circumferentially spaced radial elecrode strips integrally provided on said insulation substance layer and connected to at their inner ends to said socket and at their outer ends to said external electric circuit.

Claim 14

Dependent Claim 150 words

A high frequency filter adapted for use in combination with an internal electronic circuit element arranged to be carried on a circuit board of an insulation material and to be connected to an external electric circuit, the high frequency filter comprising: an annular electrode plate mounted on said circuit board to be grounded, said electrode plate being provided at the inner periphery thereof with a cylindrical socket for connection to said electronic circuit element; an annular insulation substance layer integrally formed on said electrode plate, said insulation substance layer being made of a dielectric material whose dielectric constant decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto; and a plurality of circumferentially spaced radial elecrode strips integrally provided on said insulation substance layer and connected to at their inner ends to said socket and at their outer ends to said external electric circuit.

Claim 15

Dependent Claim 28 words

A high frequency filter as claimed in claim 11, wherein said electronic circuit element is an integrated circuit element of the cylindrical package type connected to said socket.

Claim 16

Dependent Claim 22 words

A high frequency filter as claimed in claim 11, wherein said electronic circuit element is a single transistor connected to said socket.

Claim 17

Dependent Claim 71 words

A strip-line frequency filter as claimed in claim 5, wherein said insulation substance layer includes a first section made of a dielectric material whose dielectric constant decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto and further includes a second section made of a magnetic material whose permeability decreases or increases in accordance with an increase or a decrease of wireless frequency applied thereto.

Claim 18

Dependent Claim 41 words

A strip-line high frequency filter as claimed in claim 14, wherein the first section of said insulation substance layer is made of a compound of ferro-niobate and ferrotungsten, and the second section of said insulation substance layer is made of ferrite.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1991-05-10	1991-11-09	1992-05-10	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1995-05-10	1995-11-09	1996-05-10	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1999-05-10	1999-11-09	2000-05-10	$7700.00	Window Closed / Lapsed

High frequency filter for electric instruments

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