Radio communications
AssigneeNokia Technologies Oy
InventorsSenad Bulja, Kim Nielsen
Life of this patent
Estimating the term…
Abstract
Circuitry comprising: a first resonant radio frequency conductive path between a first node and a third node; a second resonant radio frequency conductive path between a second node and the third node; an internode radio frequency conductive path between the first node and the second node; a shunt resonant element coupled to the third node and shared by the first resonant radio frequency conductive path and the second resonant radio frequency conductive path; and a phase shift element for introducing a relative phase shift to the first resonant radio frequency conductive path relative to the second resonant radio frequency conductive path.
Claims19
Circuitry comprising:
- a first resonant radio frequency conductive path comprising a first transmission line between a first node and a third node;
- a second resonant radio frequency conductive path comprising a second transmission line between a second node and the third node;
- an internode radio frequency conductive path comprising a third transmission line between the first node and the second node;
- a shunt resonant element coupled to the third node and shared by the first resonant radio frequency conductive path and the second resonant radio frequency conductive path;
- and
- a phase shift element for introducing a relative phase shift to the first resonant radio frequency conductive path relative to the second resonant radio frequency conductive path, wherein the first transmission line and the second transmission line comprise respective branches from the third transmission line with the first transmission line, but not the second transmission line, comprising the phase shift element.
Circuitry comprising:
- two or more first resonant radio frequency conductive paths between a first node and a third node;
- a second resonant radio frequency conductive path between a second node and the third node;
- an internode radio frequency conductive path between the first node and the second node;
- a shunt resonant element coupled to the third node and shared by the two or more first resonant radio frequency conductive paths and the second resonant radio frequency conductive path;
- and
- phase shift elements for introducing a relative phase shift to the first resonant radio frequency conductive paths relative to the second resonant radio frequency conductive path,
- wherein respective ones of the two or more first resonant radio frequency conductive paths comprise a phase shift element for introducing the relative phase shift to the respective first resonant radio frequency conductive path relative to the second resonant radio frequency conductive path.
A filter comprising:
- first and second circuitry, wherein each of the first and second circuitry comprises:
- a first resonant radio frequency conductive path between a first node and a third node;
- a second resonant radio frequency conductive path between a second node and the third node;
- an internode radio frequency conductive path between the first node and the second node;
- a shunt resonant element coupled to the third node and shared by the first resonant radio frequency conductive path and the second resonant radio frequency conductive path;
- and
- a phase shift element for introducing a relative phase shift to the first resonant radio frequency conductive path relative to the second resonant radio frequency conductive path;
- and
- a four-port cross-coupler comprising four ports,
- wherein a first one of the ports of the four-port cross-coupler is coupled to the first node of the first circuitry,
- wherein a second one of the ports of the four-port cross-coupler is coupled to the first node of the second circuitry, and
- wherein two other ports of the four-port cross-coupler provide input/output ports of the filter.
Dependencies are inferred from the claim text.