PATENT CLAIM ANALYSIS

Application Number: 15911164
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["330", "261000"]

Abstract:
The present invention reveals a new biasing method which can be used in solid state audio power amplifier design despite of the Class of operation. The proposed biasing technology relies only on traditional electrical feedback to build up and maintain the desired biasing current and doesn't need thermal coupling or thermal tracking techniques in order to overcome power transistor device's temperature dependent input-output characteristics as required by traditional approach. An ingenious current sensing and amplification circuit is devised in order to generate an voltage output which is only corresponding to the quiescent biasing current of the output stage. This voltage output is then used as an representative of the power stage biasing current to be regulated by a feedback loop comprising a traditional voltage multiplier, the output stage and the aforementioned current sensing and amplification circuit.

Claim (Index 14):
A biasing circuit as recited in  claim 1 , wherein said voltage multiplier is comprised of a complimentary pair of common emitter single ended amplifier if BJT transistors are used or common source single ended amplifier if FETs are used; wherein the N type common emitter/source single ended amplifier and the P type common emitter/source single ended amplifier of said complimentary pair are connected in series and symmetrically by tying the emitter/source nodes together; wherein the base/gate nodes of said complimentary single ended amplifiers form a complimentary input node pair to be connected to said output nodes of said complimentary differential amplifier; wherein the voltage between the collector/drain nodes of said N/P type complimentary transistors forms said output voltage which is applied to the input of said complimentary output stage to establish desired biasing current.

Metadata:
- Claim Count in Document: 47.0
- Percentile: 90.0
- Lexical Diversity: 1.70238
- Patent Class: 330.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13863429', '11136203', '12464481', '10316990', '14197695']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7784338486709655
- 35 USC 102 Novelty (BERT): 0.4779193058746592
- Combined Prediction Score: 0.7483823943913349
- Mean Citation Score: 203.814792
- Max Citation Score: 208.58533
- Similarity Product: 169.58401823754906

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

Dataset: test