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 4):
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 first DAC comprises: \n a plurality of first Sub-DACs, each sampling a respective first sub-stream as a function of a respective clock signal, each of said plurality of first Sub-DACs generating a respective first Sub-DAC output; and \n a first summation device to receive and sum together outputs of said plurality of first Sub-DACs to generate a first summed output, an output of the first DAC being equal to the first summed output, the first summed output being proportional to a moving average of the outputs of said plurality of first Sub-DACs; \n the second DAC comprises: \n a plurality of second Sub-DACs, each sampling a respective second sub-stream as a function of a respective second clock signal, each of said plurality of second Sub-DACs generating a respective second Sub-DAC output; and \n a second summation device to receive and sum together outputs of said plurality of second Sub-DACs to generate a second summed output, an output of the second DAC being equal to the second summed output, the second summed output being proportional to the moving average of the outputs of said plurality of second Sub-DACs; \n the system has a frequency transfer function that depends on the moving average of the outputs of said plurality of first Sub-DACs and on the moving average of the outputs of said plurality of second Sub-DACs.

Metadata:
- Claim Count in Document: 32.0
- Percentile: 88.0
- Lexical Diversity: 1.82222
- Patent Class: 375.0
- Transitional Phrase Type: none
- Component Type: 0
- Foreign Priority: False
- Related Applications: ['15230965', '15860848', '12571201', '15787298', '13557067']

Analysis Scores:
- 35 USC 101 Eligibility (BERT): 0.4519143322069034
- 35 USC 102 Novelty (BERT): 0.6453171518082161
- Combined Prediction Score: 0.4712546141670347
- Mean Citation Score: 301.0444540000001
- Max Citation Score: 585.9580000000002
- Similarity Product: 583.0368394712212

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