Area-efficient balun
AssigneeQUALCOMM Incorporated
InventorsSean Joel Lyn, Cheng-Han Wang, Hye Jin Song, Hai Huang, Sang-Oh Lee
Life of this patent
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Abstract
An area-efficient balun and a method for signal processing using such a balun. One example balun generally includes a winding and a clamping circuit. The winding is formed by a coiled trace including a first portion having a first trace width and a second portion having a second trace width, the second trace width being narrower than the first trace width. The clamping circuit has a first terminal and a second terminal, the first terminal of the clamping circuit being coupled to the first portion of the coiled trace.
Claims30
A balun comprising:
- a winding formed by a coiled trace, the coiled trace comprising:
- a first portion having a first trace width;
- and
- a second portion having a second trace width, the second trace width being narrower than the first trace width;
- and
- a clamping circuit having a first terminal and a second terminal, the first terminal of the clamping circuit being coupled to the first portion of the coiled trace.
An apparatus for wireless communications comprising a transceiver front-end, the transceiver front-end having a balun comprising:
- a winding formed by a coiled trace, the coiled trace comprising:
- a first portion having a first trace width;
- and
- a second portion having a second trace width, the second trace width being narrower than the first trace width;
- and
- a clamping circuit having a first terminal and a second terminal, the first terminal of the clamping circuit being coupled to the first portion of the coiled trace.
A method of signal processing, comprising:
- amplifying a differential signal;
- and
- converting the amplified differential signal to a single-ended signal using a balun, the balun comprising:
- a winding formed by a coiled trace, the coiled trace comprising:
- a first portion having a first trace width;
- and
- a second portion having a second trace width, the second trace width being narrower than the first trace width;
- and
- a clamping circuit having a first terminal and a second terminal, the first terminal of the clamping circuit being coupled to the first portion of the coiled trace.
Dependencies are inferred from the claim text.