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 12):
A single-pole, multiple-throw RF switch comprising:\n a plurality of first ports; a second port; a plurality of pass transistor groupings; a plurality of shunt transistor groupings; wherein:\n a number of throws, N, is larger than or equal to two; \n a pass transistor grouping i, i=1, 2, . . . , N, of the plurality of pass transistor groupings is coupled with a corresponding first port i, a corresponding shunt transistor grouping i, and the second port; \n the shunt transistor grouping i, i=1, 2, . . . , N, of the plurality of shunt transistor groupings is coupled to the first port i, and ground; \n the plurality of pass transistor groupings comprise one or more first ACC N-MOSFETs; \n the plurality of shunt transistor groupings comprise one or more second ACC N-MOSFETs; \n each first ACC-NMOSFET of the one or more first ACC N-MOSFETs comprises a first body, a first gate, a first drain, a first source and a first gate oxide layer, wherein the first gate oxide layer is positioned between the first gate and the first body, and a first accumulated charge sink (ACS) region connected to the first body; \n each second ACC-NMOSFET of the one or more second ACC N-MOSFETs comprises a second body, a second gate, a second drain, a second source and a second gate oxide layer, wherein the second gate oxide layer is positioned between the second gate and the second body, and a second accumulated charge sink (ACS) region connected to the second body; \n in a first pass state i, the pass transistor grouping i is configured to be enabled, thereby connecting a corresponding first RF port with the second port; \n in a second pass state i, the pass transistor grouping i is configured to be disabled, thereby isolating the corresponding first port from the second port, and the one or more first ACC N-MOSFETs are 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, \n the first bias voltage is negative with respect to ground, the first drain and the first source; \n in a first shunt state i, the shunt transistor grouping is configured to be enabled, thereby isolating a corresponding first port from the second port; \n in a second shunt state i, each second ACC N-MOSFET of the one or more ACC N-MOSFETs is configured to be disabled, thereby isolating the corresponding first RF port from the ground, and the one or more second ACC N-MOSFETs are configured to operate in the accumulated charge regime where a second bias voltage is applied to the second ACS region to control or to remove accumulated charge from the second body via the second ACS region; and \n the second bias voltage is negative with respect to the ground, the second drain and the second 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): 0.8895791761933042
- 35 USC 102 Novelty (BERT): 0.6431591738443951
- Combined Prediction Score: 0.8649371759584134
- Mean Citation Score: 667.546126
- Max Citation Score: 701.98737
- Similarity Product: 561.4972249855076

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