Filter construction and oscillator for frequencies of several gigahertz
First Claim
1. A radio-frequency resonator filter comprising:
- a base plate and an electrically conductive ground plane in connection with it, at least first and second inner conductors attached substantially perpendicularly to the base plate and each having a first end and a second end, and an electrically conductive casing which is connected to the base plate and substantially surrounds said inner conductors, wherein the first end of each inner conductor is in contact with said ground plane and the second end of each inner conductor is in contact with said electrically conductive casing, and wherein said casing comprises a partition wall between said at least first and second inner conductors, said partition wall having at least one hole to provide for an electromagnetic coupling.
5 Assignments
0 Petitions
Accused Products
Abstract
A radio-frequency filter (400, 500, 600) comprises
a base plate (401, 603) and an electrically conductive ground plane in connection with it,
a predetermined number of inner conductors (403A-403G, 501, 502, 601) attached substantially perpendicularly to the base plate which have a first end and second end, and
an electrically conductive casing (402, 503, 602) which is connected at one side to the base plate and substantially surrounds said inner conductors.
A first end of each inner conductor is in contact with said ground plane and a second end is in contact with said electrically conductive casing so that the resonators comprising the inner conductors, ground plane and casing function as half-wave resonators.
54 Citations
8 Claims
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1. A radio-frequency resonator filter comprising:
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a base plate and an electrically conductive ground plane in connection with it, at least first and second inner conductors attached substantially perpendicularly to the base plate and each having a first end and a second end, and an electrically conductive casing which is connected to the base plate and substantially surrounds said inner conductors, wherein the first end of each inner conductor is in contact with said ground plane and the second end of each inner conductor is in contact with said electrically conductive casing, and wherein said casing comprises a partition wall between said at least first and second inner conductors, said partition wall having at least one hole to provide for an electromagnetic coupling. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A radio-frequency oscillator comprising:
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a base plate and an electrically conductive ground plane in connection with it, an inner conductor which is attached substantially perpendicularly to the base plate and has a first end and a second end, and an electrically conductive casing which is connected to the base plate and substantially surrounds said inner conductor, wherein the length of said inner conductor is between 0.75 and 7.5 cm, the first end of the inner conductor is in contact with said ground plane and the second end is in contact with said electrically conductive casing.
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Specification