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US 7,072,625 B2Granted
Antenna circuitry
AssigneeTTPCOM Limited
InventorsRobert Astle Henshaw, David Freeborough, Patrick Wurm
Life of this patent
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Abstract
An antenna circuit for a mobile telecommunication device. The circuit comprises a power amplifier for amplifying, in use, a signal to be transmitted. An antenna transmits signals output from the power amplifier. Switching means introduces, dependent upon the gain setting of the power amplifier, an attenuator between the output of the power amplifier and the antenna.
Claims14
An antenna circuit for a mobile telecommunication device, the circuit comprising:
- a power amplifier for receiving and amplifying, in use, a signal to be transmitted;
- an antenna for transmitting signals output from the power amplifier;
- a switching means;
- and
- an attenuator introduced by the switching means, depending upon the gain setting of the power amplifier, the attenuator configured between the output of the power amplifier and the antenna,
- wherein the attenuator is configured to reduce the amplitude of a blocking signal when the power amplifier is operating at low power levels.
3 more elements
Dependencies are inferred from the claim text.