Patent ID: 11888457
Assignee: NOKIA TECHNOLOGIES OY
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 14:
15. A filter as claimed in claim 14, wherein each of the first and second circuitry further comprises:
a first radio frequency conductive path between the first node and an intermediate node;
a second radio frequency conductive path between the second node and the intermediate node; and
a third radio frequency conductive path between the intermediate node and the third node, wherein the third radio frequency conductive path comprises the shunt resonant element as a frequency selective impedance that provides a lower impedance path to the third node for a narrower band of frequencies and a higher impedance path to the third node for wider bands of frequencies adjacent the narrower band of frequencies and wherein the first radio frequency conductive path comprises the phase shift element,
wherein the first resonant radio frequency conductive path between the first node and the third node comprises the first radio frequency conductive path between the first node and the intermediate node and comprises the third radio frequency conductive path between the intermediate node and the third node,
wherein the second resonant radio frequency conductive path between the second node and the third node comprises the second radio frequency conductive path between the second node and the intermediate node and comprises the third radio frequency conductive path between the intermediate node and the third node, and wherein the first resonant radio frequency conductive path and the second resonant radio frequency conductive path share the intermediate node and the third radio frequency conductive path between the intermediate node and the third node.