Communication transceiver having a three-line balun with power amplifier bias
AssigneeBroadcom Corporation
InventorsTom McKay, 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 circuit including a first port and a second port, the circuit comprising:
- a first conductor, formed in a first metal layer of a multi-layer structure, the multi-layer structure including a plurality of metal layers, the first conductor having a first end connected to the first port;
- a second conductor, formed in a second metal layer of the multi-layer structure, having a first end connected to the first conductor and a second end connected to the second port;
- and
- a third conductor, formed in a third metal layer of the multi-layer structure, configured to couple signals between the third conductor and the second conductor.
A circuit including a first port and a second port, the circuit comprising:
- a first conductor, formed in a first metal layer of a multi-layer structure, the multi-layer structure including a plurality of metal layers, the first conductor having a first end connected to the first port;
- a second conductor, formed in a second metal layer of the multi-layer structure, having a first end connected to the first conductor and a second end connected to the second port;
- and
- a third conductor, formed in a third metal layer of the multi-layer structure, wherein the second metal layer is disposed between the first metal layer and the third metal layer.
Dependencies are inferred from the claim text.