PATENT CLAIM ANALYSIS

Application Number: 15919510
Application Type: Utility
Filing Date: 2018-03
Publication Date: 2019-09
Patent Classification: ["375", "334000"]

Abstract:
An ultra-low power back-channel receiver is presented that demodulates binary a FSK back-channel signal embedded in 5.8 GHz IEEE 802.11a Wi-Fi OFDM packets. The architecture of the back-channel receiver employs a two-step down-conversion where the first mixing stage downconverts using the third harmonic of the local oscillator for power efficiency. The LP-65 nm CMOS receiver consumes 335 μW with a sensitivity of −72 dBm at a BER of 10 −3  and data-rate of 31.25 kb/s. The radio uses a balun and a 250 kHz reference crystal as external components. The receiver uses a 1V supply voltage for analog blocks, and 0.85V for digital blocks including the local oscillator and the frequency-locked loop circuits.

Claim (Index 10):
A low power RF receiver, comprising:\n an analog front-end circuit configured to receive an RF input signal and operates to down convert the RF input signal to a down converted signal, where the RF input signal is encoded with a binary frequency-shift keying method; and an intermediate frequency stage circuit configured to receive the down converted signal from the analog front-end circuit and route the down converted signal into two circuit detection paths, each circuit detection path further down converts the down converted signal into a baseband signal and thereby forms a pair of baseband signals; a first circuit detection path having a first mixer in series with a first low pass filter, wherein first mixer mixes the down converted signal with a first mixing signal to yield a first mixed signal, the first mixing signal having a frequency equal to a mark frequency of the binary frequency-shift keying method; a second circuit detection path having a second mixer in series with a second low pass filter, wherein second mixer mixes the down converted signal with a second mixing signal to yield a second mixed signal, the second mixing signal has a frequency equal to a space frequency of the binary frequency-shift keying method; wherein cutoff of the first low pass filter and cutoff of the second low pass filter are set in between zero and the space frequency of the binary frequency-shift keying method.

Metadata:
- Claim Count in Document: 36.0
- Percentile: 90.0
- Lexical Diversity: 1.45122
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['14254318', '10027372', '12192933', '12233314', '14305308']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.494247287510538
- 35 USC 102 Novelty (BERT): 0.4900869884640972
- Combined Prediction Score: 0.4938312576058939
- Mean Citation Score: 237.18666800000003
- Max Citation Score: 247.56989
- Similarity Product: 196.7743289630693

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