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 10):
A low noise amplifier (LNA) circuit comprising:\n an input port for receiving a radio frequency (RF) input signal; a first transistor comprising a first gate for receiving an input voltage corresponding to the RF input signal; a transformer comprising a primary winding having a primary inductance and a secondary winding having a secondary inductance, the primary winding being connected between a first source of the first transistor and ground, the primary winding receiving a source voltage from the first source; and a variable capacitor connected in parallel with the secondary winding of the transformer, the variable capacitor having an adjustable capacitance, wherein resonance impedance between the first source and ground is increased to a high impedance at a second harmonic frequency of the source voltage in response to the secondary inductance of the secondary winding, a coupling coefficient of the transformer and adjustment of the adjustable capacitance, the adjustable capacitance being adjusted until an LC resonant frequency of the secondary inductance and the adjustable capacitance equals a reciprocal of the second harmonic frequency of the source voltage, and wherein the high impedance provides an electrically open circuit between the first source and ground, such that the first transistor generates substantially no current at the second harmonic frequency.

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): 0.7431895001432178
- 35 USC 102 Novelty (BERT): 0.4843202272285424
- Combined Prediction Score: 0.7173025728517504
- Mean Citation Score: 199.039232
- Max Citation Score: 211.4154
- Similarity Product: 174.78442667108777

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