PATENT CLAIM ANALYSIS

Application Number: 15896632
Application Type: Utility
Filing Date: 2018-02
Publication Date: 2018-07
Patent Classification: ["375", "316000"]

Abstract:
An Interleaved Radio Frequency Digital-to-Analog Converter (RF DAC) suitable for use in cellular base stations and optimized to give both a wide RF tuning range and a wide RF bandwidth is disclosed. The RF DAC uses two levels of interleaving, the first providing a direct conversion path from Base Band (BB) to RF, and the second providing a variable interleaving factor through the use of summation to optimize the output bandwidth as a function of the RF center frequency. Digital Interpolation, including an arbitrary sample rate conversion filter, allows the RF DAC to operate from a wide range of possible BB sample rates and the DAC sample rate is a fixed ratio of the RF center frequency. As a result, the spurious outputs from the RF DAC are in known locations that are relatively easy to filter out, minimizing the frequency planning tasks required for a complete RF system design.

Claim (Index 6):
The system of  claim 1  wherein:\n the first sample stream is representable as first sub-streams that are interleaved with each other; \n the second sample stream is representable as second sub-streams that are interleaved with each other; \n the system further comprises: \n a first switching unit to obtain the first sub-streams of the first sample stream; and a second switching unit to obtain the second sub-streams of the second sample stream; \n the first DAC comprises a plurality of first Sub-DACs; \n the second DAC comprises a plurality of second Sub-DACs; \n the first switching unit is configurable to: \n provide each of the first Sub-DACs a same first sub-stream; \n provide each of the first Sub-DACs a different first sub-stream; or \n provide distinct groups of first Sub-DACs with a single, distinct first sub-stream, each of the first Sub-DACs to output a respective first Sub-DAC output, the system further comprising a first summation device to obtain and sum together the first Sub-DAC outputs to obtain a first summed output, the output of the first DAC being equal to the first summed output, the first summed output being proportional to a moving average of the first Sub-DAC outputs; \n the second switching unit is configurable to: \n provide each of the second Sub-DACs a same second sub-stream; \n provide each of the second Sub-DACs a different second sub-stream; or \n provide distinct groups of second Sub-DACs with a single, distinct second sub-stream, each of the second Sub-DACs to output a respective second Sub-i-DAC output, the system further comprising a second summation device to obtain and sum together the second Sub-DAC outputs to obtain a second summed output, the output of the second DAC being equal to the second summed output, the second summed output being proportional to a moving average of the second Sub-DAC outputs; \n the first summation device and the second summation device define a frequency transfer function that depends on the moving average of the first Sub-DAC outputs and on the moving average of the second Sub-DAC outputs.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 88.0
- Lexical Diversity: 1.82222
- Patent Class: 375.0
- Transitional Phrase Type: open
- Component Type: 1
- Foreign Priority: False
- Related Applications: ['15230965', '15860848', '12571201', '15787298', '13557067']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4226989434924557
- 35 USC 102 Novelty (BERT): 0.6431398339893977
- Combined Prediction Score: 0.44474303254215
- Mean Citation Score: 301.0444540000001
- Max Citation Score: 585.9580000000002
- Similarity Product: 582.7654658619167

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