222614 ⎘
Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits; Compression ; Expansion; Suppression of unnecessary data, e.g. redundancy reduction; Conversion to or from differential modulation; Digital delta-sigma modulation; Structural details of digital delta-sigma modulators characterised by the number of quantisers and their type and resolution having multiple quantisers arranged in cascaded loops, each of the second and further loops processing the quantisation error of the loop preceding it, i.e. multiple stage noise shaping [MASH] type
System and method to enhance noise performance in a delta sigma converter
#2System and method to enhance noise performance in a delta sigma converter
#3System improving signal handling
#4Nested cascaded mixed-radix digital delta-sigma modulator
#5System improving signal handling
#6Dither-less multi-stage noise shaping fractional-N frequency synthesizer systems and methods
#7Digital/analog conversion apparatus
#8Dither-less error feedback fractional-n frequency synthesizer systems and methods
#9Quantization circuit and method for quantizing an input quantity
#10Cascaded viterbi bitstream generator
#11Dither-less error feedback fractional-N frequency synthesizer systems and methods
#12Dither-less multi-stage noise shaping fractional-N frequency synthesizer systems and methods
#13MASH sigma-delta modulator and DA converter circuit
#14Higher-order phase noise modulator to reduce spurs and quantization noise
#15Digital/analogue conversion apparatus
#16Method and circuit for continuous-time delta-sigma DAC with reduced noise
#17Frequency-variable filter
#18Method and circuit for continuous-time delta-sigma DAC with reduced noise
#19High resolution delta-sigma digital-to-analog converter
#20Noise-shaped segmented digital-to-analog converter
#21Time-interleaved delta-sigma modulator
#22Digital/analogue conversion apparatus
#23MASH sigma delta modulator
#24Mash modulator and frequency synthesizer using the same
#25Circuits for forming the inputs of a latch
#26Pulse width modulation method and digital analogue converter using the same
#27Sigma-delta modulators
#28Sigma delta modulator, fractional frequency synthesizer and sigma delta modulating method
#29Sigma-delta modulator
#30Delta sigma modulation D/A converting system
#31Frequency modulator, frequency modulating method, and wireless circuit
#32Multi stage noise shaping quantizer
#33DA-converter system and a method for converting a multi-bit digital signal to an analog signal
#34Digital/analog converter and method for digital/analog conversion of a signal
#35Multiple stage delta sigma modulators
#36Sigma-delta converter and use thereof
#37Spectral emission shaping sigma delta modulator for wireless applications
#38Arrangement, phase locked loop and method for noise shaping in a phase-locked loop
#39Sigma-delta modulator for PLL circuits
#40Transmitter for wireless applications incorporation spectral emission shaping sigma delta modulator
#41Variable frequency synthesizer comprising a sigma-delta modulator
#42Hybrid polar/cartesian digital modulator
#43Variable modulus interpolator, and a variable frequency synthesiser incorporating the variable modulus interpolator
#44High-speed MASH sigma-delta modulator architecture and method of operation thereof
#45Frequency modulator, frequency modulating method, and wireless circuit
#46Method and apparatus for converting PCM to PWM
#47Variable-order delta sigma modulator and DA converter
#48Broadband sigma-delta modulator
#49Sigma-delta converter with noise suppression
#50Modified pi-sigma-delta-modulator based digital signal processing system for wide-band applications