PATENT CLAIM ANALYSIS

Application Number: 16026180
Application Type: Utility
Filing Date: 2018-07
Publication Date: 2020-01
Patent Classification: ["330", "251000"]

Abstract:
A switching amplifier circuit ( 200 ) connected to drive an impedance-based output load ( 230 ) includes high side and low side switches ( 201 - 204 ) configured and connected to connect first and second supply voltage lines to first and second output nodes (ANTP, ANTN) in response to gating control signals, and also includes an output current sensing circuit for measuring a current through the output load with a current sensing resistor (Rs) connected between the second supply voltage line and a source of one or more split gate-source switching transistors ( 203 C) in the low side gate-source switching transistor, where a voltage sense circuit connected across the current sensing resistor is configured to sample a voltage across the current sensing resistor for measuring a sense current at the current sensing resistor.

Claim (Index 19):
A wireless communication system comprising:\n a key-fob circuit configured and arranged to receive and respond to modulated signals wirelessly; and a Class-D switching amplifier circuit connected to drive an impedance-based load connected between first and second output nodes, comprising: first and second high side electronic switches configured and arranged to connect a first reference voltage to, respectively, the first and second output nodes in response to first and second gating control signals; and first and second low side split gate-source electronic switches configured and arranged to connect a second reference voltage to, respectively, the first and second output nodes in response to the first and second gating control signals; and an output current sensing circuit for measuring a current through the impedance-based load with a current sensing resistor connected between the second reference voltage and a source of one or more split gate-source switching transistors in the low side split gate-source switching transistor, where the current sensing resistor comprises a polysilicon resistor having a resistance value of approximately 200 Ohms or less, and the one or more low side split gate-source switching transistors comprise a current sense transistor having a drain node directly connected to the output connection, a source node connected to the current sensing resistor, and a gate node, the gate node is connected by a connection switch to the first gating control signal in a first connection state, and is connected by the connection switch to the source node of the current sense transistor in a second connection state so that less current is provided to the current sensing resistor in the second state than in the first state.

Metadata:
- Claim Count in Document: 45.0
- Percentile: 95.0
- Lexical Diversity: 2.04225
- Patent Class: 330.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15213217', '11560783', '15117512', '14542806', '15712770']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7643253313833567
- 35 USC 102 Novelty (BERT): 0.4824488924403279
- Combined Prediction Score: 0.7361376874890538
- Mean Citation Score: 169.548544
- Max Citation Score: 182.02832
- Similarity Product: 131.3069232491112

Labels:
- Claim Label 101: 1
- Claim Label 102: 1
- Claim Label 103: 0
- Claim Label 112: 1
- Combined Label: 1
- Label 101 Adjusted: 1

Dataset: test