Consolidated acoustic transformer in transmission chain
AssigneeQorvo US, Inc.
InventorsBaker Scott, Nadim Khlat
Life of this patent
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Abstract
An acoustic transformer in a transmitter chain is disclosed. In one aspect, a differential power amplifier may produce a differential signal that is provided to an acoustic transformer coupled to an acoustic filter. The acoustic transformer provides a single-ended output signal for use by the acoustic filter. To facilitate operation in multiple bands, multiple acoustic transformer-acoustic filter pairs may be provided with a switching network used to route the amplified signal to the appropriate transformer-filter pair.
Claims12
A transmitter chain comprising:
- a power amplifier having a differential output comprising a first output line and a second output line;
- an acoustic transformer directly coupled to the first output line and the second output line and comprising a single-ended output;
- and
- an acoustic filter comprising a tunable ferroelectric network element.
A transmitter chain comprising:
- a power amplifier having a differential output comprising a first output line and a second output line;
- a first inductor coupled to the first output line and configured to be coupled to a supply bias voltage;
- a second inductor coupled to the second output line and configured to be coupled to the supply voltage;
- an acoustic transformer coupled to the first output line through a third inductor and coupled to the second output line through a fourth inductor and comprising a single-ended output;
- and
- an acoustic filter comprising a tunable ferroelectric network element.
A wireless communication device comprising:
- a transmitter chain comprising:
- a power amplifier having a differential output comprising a first output line and a second output line;
- an acoustic transformer directly coupled to the first output line and the second output line and comprising a single-ended output;
- and
- an acoustic filter comprising a tunable ferroelectric network element.
Dependencies are inferred from the claim text.