System method and apparatus for a three-line balun with power amplifier bias
AssigneeBroadcom Corporation
InventorsTom MacKay, Vas POSTOYALKO, Edwin LI
Life of this patent
Estimating the term…
Abstract
A balun that includes a first conductor, a second conductor, and a third conductor. The first conductor has a first length. The first conductor also has a first end connected to a first balanced power amplifier output port. The second conductor has substantially the same first length. The second conductor also includes a first end connected to a second balanced power amplifier output port and a second end connected to a second end of the first conductor. The third conductor has substantially the same first length. The third conductor has a first end connected to an antenna port and a second end connected to a ground potential.
Claims20
A balun, formed in a multi-layer structure including a plurality of metal layers, comprising:
- a first conductor having a first length, formed in a first metal layer of the multi-layer structure;
- a second conductor having a second length substantially similar to the first length, formed in a second metal layer of the multi-layer structure, connected to the first conductor;
- and
- a third conductor having a third length substantially similar to the first length, formed in a third metal layer of the multi-layer structure.
A balun formed in a multi-layer structure including a plurality of metal layers interleaved by a plurality of insulating layers comprising:
- a first conductor having a first length, formed in a first metal layer of the multi-layer structure, the first conductor having a first end connected to a first output port;
- a second conductor having a second length substantially similar to the first length, formed in a second metal layer of the multi-layer structure, the second conductor includes:
- a first end connected to a second port, and
- a second end connected to a second end of the first conductor;
- and
- a third conductor having a third length substantially similar to the first length, formed in a third metal layer of the multi-layer structure, the third conductor having a first end connected to an antenna port and a second end connected to a ground potential.
Dependencies are inferred from the claim text.