PATENT CLAIM ANALYSIS

Application Number: 15907852
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-09
Patent Classification: ["330", "12400R"]

Abstract:
A Doherty amplifier stably operable even when an output thereof is smaller than the back-off level is disclosed. The Doherty amplifier installs a peak amplifier that shows a substantial leak due to parasitic components thereof when the output thereof is smaller than the back-off level. The peak amplifier is connected with the combining node through an impedance line whose impedance is higher than characteristic impedance. The carrier amplifier, which has characteristic same with the peak amplifier, is coupled with the combining node through a quarter wavelength line. The peak amplifier and the carrier amplifier have no output matching circuits therein.

Claim (Index 1):
A Doherty amplifier that amplifies an input radio frequency (RF) signal, the Doherty amplifier having a back-off level that is smaller than a preset amount from saturated power in an output thereof, the Doherty amplifier comprising:\n a carrier amplifier for amplifying the input RF signal, the carrier amplifier saturating output power thereof at the back-off level; a peak amplifier configured to show a substantial leak when the Doherty amplifier in an output thereof is smaller than the back-off level, the peak amplifier turning on at the back-off level, and saturating an output thereof at the saturate power; a combining node that combines an output of the carrier amplifier with the peak amplifier; a transmission line provided between the carrier amplifier and the combining node, the transmission line having an electrical length of \u03c0/2 radian for a signal subject to the Doherty amplifier; and an impedance line provided between the combining node and the peak amplifier, wherein the impedance line increases impedance viewing the peak amplifier from the combining node when the Doherty amplifier in the output power thereof is smaller than the back-off level.

Metadata:
- Claim Count in Document: 1.0
- Percentile: 88.0
- Lexical Diversity: 1.98148
- Patent Class: 330.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14759202', '15827541', '11255874', '15543582', '12996066']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.7915545733227606
- 35 USC 102 Novelty (BERT): 0.5010690170346034
- Combined Prediction Score: 0.7625060176939449
- Mean Citation Score: 251.395756
- Max Citation Score: 265.8521
- Similarity Product: 205.55178232374192

Labels:
- Claim Label 101: 1
- Claim Label 102: 0
- Claim Label 103: 1
- Claim Label 112: 0
- Combined Label: 0
- Label 101 Adjusted: 1

Dataset: test