Power amplifier (PA) self-heating tracking for with self-heating time constant estimation
AssigneeNXP USA, Inc.
InventorsSai-Wang Tam, Viet Thanh Dinh, Juan Xie, Alden C Wong, Tian Liu, Sri Harsha Kondapalli, Sa-Wey Wu, Ovidiu Carnu
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Abstract
Embodiments of self-heating tracking circuits for a power amplifier (PA) are disclosed. In an embodiment, a self-heating tracking circuit for a PA includes a PA replica circuit in proximity to the PA and an estimation unit configured to estimate a self-heating time constant of the PA in response to turning on the PA replica circuit and turning off the PA replica circuit.
Claims20
A self-heating tracking circuit for a power amplifier (PA), the self-heating tracking circuit comprising:
- a PA replica circuit in proximity to the PA;
- and
- an estimation unit configured to estimate a self-heating time constant of the PA in response to turning on the PA replica circuit and turning off the PA replica circuit.
A self-heating tracking circuit for a fin field-effect transistor (FinFET) power amplifier (PA), the self-heating tracking circuit comprising:
- a PA replica circuit in proximity to the FinFET PA, wherein a temperature of the PA replica circuit tracks with a temperature of the FinFET PA;
- and
- an estimation unit configured to estimate a self-heating time constant of the FinFET PA in response to turning on the PA replica circuit and turning off the PA replica circuit.
A self-heating tracking circuit for a power amplifier (PA), the self-heating tracking circuit comprising:
- a PA replica circuit located within one micrometer (μm) of the PA such that a temperature of the PA replica circuit tracks with a temperature of the PA, wherein the PA is a fin field-effect transistor (FinFET) device or a silicon on insulator (SOI) device;
- and
- an estimation unit configured to estimate a self-heating time constant of the PA in response to turning on the PA replica circuit and turning off the PA replica circuit.
Dependencies are inferred from the claim text.