PATENT CLAIM ANALYSIS

Application Number: 15907540
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2019-08
Patent Classification: ["330", "307000"]

Abstract:
An amplifier circuit for amplifying an input signal includes a transistor configured to receive the input voltage via an input port, and a second-harmonic trap connected between the transistor and ground, the second-harmonic trap having an impedance high enough to enable the second-harmonic trap to act as an open circuit at a second harmonic frequency of a voltage provided by the transistor. The second-harmonic trap includes a transformer including a primary winding connected to ground and a secondary winding, the primary winding receiving the voltage provided by the transistor. The second-harmonic trap further includes a variable capacitor connected in parallel with the secondary winding of the transformer, the variable capacitor having an adjustable capacitance that may be adjusted for the second-harmonic trap to act as the open circuit at the second harmonic frequency.

Claim (Index 15):
A method of reducing second-order nonlinearity of a transistor in a low noise amplifier, having a second-harmonic trap connected between the transistor and ground, the second-harmonic trap comprising a transformer with a primary winding connected between the transistor and ground and a secondary winding, and a variable capacitor connected in series with the secondary winding, the method comprising:\n receiving an input voltage at a gate or a base of the transistor; providing an output voltage at a source or a emitter of the transistor across the primary winding of the transformer in response to the received input voltage; determining at least one parameter of the second-harmonic trap responsive to the output voltage; and adjusting an adjustable capacitance of the variable capacitor in response to the determined at least one parameter until an LC resonant frequency of the adjustable capacitance and a secondary inductance of the secondary winding equals a reciprocal of a second harmonic frequency of the output voltage, creating an electrically open circuit between the transistor and ground, such that no current is generated by the transistor at the second harmonic frequency of the output voltage.

Metadata:
- Claim Count in Document: 16.0
- Percentile: 88.0
- Lexical Diversity: 2.33333
- Patent Class: 330.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14173563', '15832381', '12370159', '14572396', '14516546']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7421256151286962
- 35 USC 102 Novelty (BERT): 0.4899791808213917
- Combined Prediction Score: 0.7169109716979658
- Mean Citation Score: 199.039232
- Max Citation Score: 211.4154
- Similarity Product: 165.18303741892578

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