PATENT CLAIM ANALYSIS

Application Number: 16054959
Application Type: Utility
Filing Date: 2018-08
Publication Date: 2019-03
Patent Classification: ["257", "382000"]

Abstract:
A method and apparatus for use in improving the linearity characteristics of MOSFET devices using an accumulated charge sink (ACS) are disclosed. The method and apparatus are adapted to remove, reduce, or otherwise control accumulated charge in SOI MOSFETs, thereby yielding improvements in FET performance characteristics. In one exemplary embodiment, a circuit having at least one SOI MOSFET is configured to operate in an accumulated charge regime. An accumulated charge sink, operatively coupled to the body of the SOI MOSFET, eliminates, removes or otherwise controls accumulated charge when the FET is operated in the accumulated charge regime, thereby reducing the nonlinearity of the parasitic off-state source-to-drain capacitance of the SOI MOSFET. In RF switch circuits implemented with the improved SOI MOSFET devices, harmonic and intermodulation distortion is reduced by removing or otherwise controlling the accumulated charge when the SOI MOSFET operates in an accumulated charge regime.

Claim (Index 2):
An RF switch circuit for switching RF signals, comprising:\n (A) a first RF port; (B) a second RF port; and (C) a pass transistor grouping having a first node coupled to the first RF port and a second node coupled to the second RF port, the pass transistor grouping comprising one or more first accumulated charge control N-type MOSFETs (ACC N-MOSFETs); and wherein:\n (a) each first ACC N-MOSFET of the one or more first ACC N-MOSFETs comprises:\n (i) a first gate, a first drain, a first source and a first gate oxide layer, where the first gate oxide layer is positioned between the first gate and a first body; and \n (ii) a first accumulated charge sink (ACS) region connected to the first body; \n \n (b) in a first pass state, the pass transistor grouping is configured to be enabled, there-by connecting the first RF port with the second RF port; \n (c) in a second pass state, the pass transistor grouping is configured to be disabled, thereby isolating the first RF port from the second RF port, and each first ACC N-MOSFET of the one or more ACC N-MOSFETs is configured to operate in an accumulated charge regime where a first bias voltage is applied to the first ACS region to control or to remove accumulated charge from the first body via the first ACS region, and \n (d) the first bias voltage is negative with respect to ground, the first drain and the first source.

Metadata:
- Claim Count in Document: 45.0
- Percentile: 96.0
- Lexical Diversity: 1.95181
- Patent Class: 257.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['13053211', '16046974', '14845154', '15707970', '13412529']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.8844234660816346
- 35 USC 102 Novelty (BERT): 0.6749984469188373
- Combined Prediction Score: 0.8634809641653549
- Mean Citation Score: 667.546126
- Max Citation Score: 701.98737
- Similarity Product: 658.5259696644081

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