Back to results
US 5,351,023 AGranted
Helix resonator
AssigneeLK-Products Oy
InventorErkki O. Niiranen
Life of this patent
Estimating the term…
Abstract
A helix resonator comprises a printed board (1) made of dielectric material, a resonator coil (2) having a high impedance end and a low impedance end and mounted on the printed board and formed by a conductor wound several turns to form a cylindrical coil, an electrically conducting cover (6) surrounding the resonator coil (2), and on the surface of the printed board a strip line (4) of electrically conducting material electrically coupled to the last or second last turn of the resonator coil (2) near the high impedance end.
Claims14
A helix resonator comprising:
- a printed board of electrically insulating material,
- a helically wound electrical conductor having a low impedance end and a high impedance end, said high impedance end ending in a terminating end of the conductor, said helically wound electrical conductor being wound around said printed board and being connected to said printed board at a connection point arranged in a region along the conductor within two conductor turns from said terminating end, and
- reactive means comprised of a strip line of predetermined length disposed on said printed board of electrically insulating material, wherein
- said strip line is coupled to said helically wound electrical conductor at said connection point, and
- said strip line has such a form and extends in such a direction in relation to the helically wound electrical conductor that at least part of the strip line is situated on said printed board in a region between said terminating end and said low impedance end of the helically wound electrical conductor, said at least part of the strip line extending toward the low impedance end so that the helically wound electrical conductor also is wound around the at least one part of the strip line.
2 more elements
A helix resonator filter having at least one helix resonator comprising:
- a printed board of electrically insulating material,
- a helically wound electrical conductor having a low impedance end and a high impedance end, said high impedance end ending in a terminating end of the conductor, said helically wound electrical conductor being wound around said printed board and being connected to said printed board at a connection point arranged in a region along the conductor within two conductor turns from said terminating end, and
- reactive means comprised of a strip line of predetermined length disposed on said printed board of electrically insulating material, wherein
- said strip line is coupled to said helically wound electrical conductor at said connection point, and
- said strip line has such a form and extends in such a direction in relation to the helically wound electrical conductor that at least part of the strip line is situated on said printed board in a region between said terminating end and said low impedance end of the helically wound electrical conductor, said at least part of the strip line extending toward the low impedance end so that the helically wound electrical conductor also is wound around the at least one part of the strip line.
2 more elements
A circuit board having a circuit adapted to be coupled to a helix resonator comprising:
- a printed board of electrically insulating material,
- a helically wound electrical conductor having a low impedance end and a high impedance end, said high impedance end ending in a terminating end of the conductor, said helically wound electrical conductor being wound around said printed board and being connected to said printed board at a connection point arranged in a region along the conductor within two conductor turns from said terminating end, and
- reactive means comprised of a strip line of predetermined length disposed on said printed board of electrically insulating material, wherein
- said strip line is coupled to said helically wound electrical conductor at said connection point, and
- said strip line has such a form and extends in such a direction in relation to the helically wound electrical conductor that at least part of the strip line is situated on said printed board in a region between said terminating end and said low impedance end of the helically wound electrical conductor, said at least part of the strip line extending toward the low impedance end so that the helically wound electrical conductor also is wound around the at least one part of the strip line.
2 more elements
A radio telephone having a helix resonator comprising:
- a printed board of electrically insulating material,
- a helically wound electrical conductor having a low impedance end and a high impedance end, said high impedance end ending in a terminating end of the conductor, said helically wound electrical conductor being wound around said printed board and being connected to said printed board at a connection point arranged in a region along the conductor within two conductor turns from said terminating end, and
- reactive means comprised of a strip line of predetermined length disposed on said printed board of electrically insulating material, wherein
- said strip line is coupled to said helically wound electrical conductor at said connection point, and
- said strip line has such a form and extends in such a direction in relation to the helically wound electrical conductor that at least part of the strip line is situated on said printed board in a region between said terminating end and said low impedance end of the helically wound electrical conductor, said at least part of the strip line extending toward the low impedance end so that the helically wound electrical conductor also is wound around the at least one part of the strip line.
2 more elements
Dependencies are inferred from the claim text.