Power passing directional coupler having a split ferrite element
AssigneeAntronix Inc.
InventorsJinquan Wu, Neil Tang
Life of this patent
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Abstract
A directional coupler includes an input connector, an output connector, and at least one tap connector. The directional coupler also includes a primary line connecting the input connector to the output connector and configured to carry an RF signal and an AC signal, and a secondary line connecting the primary line to the at least one tap connector and configured to carry a split off portion of the RF signal. The directional coupler also includes a tapped line circuit which is inhibited from carrying the AC signal. The mainline transformer includes a ferrite element surrounding the primary line and which is split in at least one location to include a gap of non-magnetic material that inhibits saturation of the ferrite element.
Claims19
A directional coupler, comprising:
- an input connector, an output connector, and at least one tap connector;
- a primary line connecting the input connector to the output connector and configured to carry an RF signal and an AC signal and including a mainline transformer;
- a secondary line connecting the primary line to the at least one tap connector and configured to carry a split off portion of the RF signal;
- and
- a tapped line circuit which is inhibited from carrying the AC signal;
- wherein the mainline transformer includes a ferrite element surrounding the primary line, wherein the ferrite element is split in at least one location to include a gap of non-magnetic material to thereby inhibit saturation of the ferrite element, and the secondary line is wound around the ferrite element.
A directional coupler, comprising:
- an input connector, an output connector, and at least one tap connector;
- a primary line connecting the input connector to the output connector and configured to carry an RF signal and an AC signal and including a mainline transformer;
- a secondary line connecting the primary line to the at least one tap connector and configured to carry a split off portion of the RF signal;
- and
- a tapped line circuit which is inhibited from carrying the AC signal;
- wherein the mainline transformer includes a ferrite element surrounding the primary line, wherein the ferrite element is split in at least one location to include a gap of non-magnetic material to thereby inhibit saturation of the ferrite element, and
- the ferrite element is split in at least two locations such that the ferrite element is formed of multiple separate pieces and the at least one gap includes a plurality of gaps.
An electronic device, comprising:
- a circuit board including at least one opening;
- an input connector, an output connector, and at least one tap connector connected to the circuit board;
- a primary line connecting the input connector to the output connector and configured to carry an RF signal and an AC signal;
- a secondary line connecting the primary line to the at least one tap connector and configured to carry a split off portion of the RF signal;
- a tapped line circuit which inhibits the tapped line from carrying the AC signal;
- a ferrite ring surrounding the primary line to increase the inductance of the RF signal form the primary line to the tapped line,
- wherein the ferrite ring is split in at least one location to include a gap of non-magnetic material, and
- wherein the ferrite ring is positioned in the opening in the circuit board.
Dependencies are inferred from the claim text.