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Table of Contents Table of Contents Glossary....................................................................................................................... 14 1.Introduction ............................................................................................................. 16 1.1Background ........................................................................................................ 16 1.2DevelopmentsinHighFrequencyOTA-CFilters ............................................. 19 1.3ResearchScope .................................................................................................. 21 1.4Original Contributions ....................................................................................... 22 1.5Organizationofthis Thesis ................................................................................ 23 2.ReviewofAnalogueFiltersforComputerHardDiskDriveSystems .................... 25 2.1Introduction........................................................................................................ 25 2.2ArchitectureofHDD.......................................................................................... 25 2.3Previous WorkofAnalogueFiltersforHDD Systems...................................... 35 2.4FilterDesignConsiderationsfor ReadChannelOTA-CFilters........................ 42 2.4.1GroupDelayResponse................................................................................ 42 2.4.2TransferFunctionoftheFilter.................................................................... 43 2.4.3FilterArchitectures ..................................................................................... 45 2.4.4FilterCircuitsandTuning........................................................................... 47 2.5OTADesignConsiderationsfor ReadChannelOTA-CFilters ........................ 48 2.6Conclusions........................................................................................................ 54 3.DesignandSimulationofLinear PhaseMLFFLFandIFLFOTA-C Lowpass FiltersforHDDReadChannels .................................................................................. 55 3.1Introduction........................................................................................................ 55 3.2Transistor-levelOTADesign............................................................................. 56 3.2.1SingleStageOTADesign........................................................................... 56 3.2.2MultipleOutput Multiple InputOTADesign............................................. 57 Design of High-frequency CMOS Integrated Filters for Computer Hard Disk Drive and Wireless Communication Systems 1 3.2.3SimulationResultsofTransistor-levelOTAs............................................. 61 3.3DesignofCurrent-mode0.05°EquirippleLinearPhase MLFFLFOTA-C LowpassFilters ........................................................................................................ 66 3.3.1SynthesisofCurrent-ModeFLFLowpassOTA-CFilters.......................... 67 3.3.2DesignofSeventhorderCurrent-modeFLF0.05°EquirippleLinearPhase LowpassOTA-CFilter............................................................................................. 70 3.3.3DesignofFifthorderCurrent-modeFLF 0.05°EquirippleLinear Phase LowpassOTA-CFilter............................................................................................. 72 3.4DesignofVoltage-modeSeventh-order IFLF0.05°EquirippleLinear Phase LowpassOTA-CFilter............................................................................................. 73 3.5SimulationResultsofCurrent-modeFLFandVoltage-modeIFLFOTA-C Filters ....................................................................................................................... 75 3.5.1SimulationResultsofCurrent-modeSeventhorder0.05°equiripplelinear phaseFLFlowpassOTA-Cfilter............................................................................. 75 3.5.2SimulationResultsofCurrent-modeFifthorder0.05° EquirippleLinear PhaseFLFOTA-CLowpassFilter .......................................................................... 78 3.5.3SimulationResultsofVoltage-modeSeventhorder0.05°EquirippleLinear PhaseIFLFOTA-CLowpassFilter......................................................................... 81 3.6Conclusions........................................................................................................ 84 4.Synthesis andDesignofCurrent-modeMLF LFOTA-C FilterswithApplicationin HDD ReadChannels ................................................................................................... 86 4.1Introduction........................................................................................................ 86 4.2All-pole Current-ModeLFFeedbackOTA-C Filters........................................ 87 4.3Current-modeLFMLFOTA-C FilterswithInputDistributor.......................... 89 4.4Current-ModeLFOTA-CLowpassFilterswithOutputSummation................ 92 4.5DesignofCurrent-modeSeventh-Order0.05°Equiripple LinearPhaseOTA-C LowpassFilterusingLFOutputSummation........................................................... 94 Design of High-frequency CMOS Integrated Filters for Computer Hard Disk Drive and Wireless Communication Systems 2 4.5.1TheSynthesisofCurrent-modeSeventhorder0.05° EquirippleLinear PhaseOTA-CLFFilter............................................................................................ 95 4.5.2Transistor-levelOTADesign...................................................................... 97 4.5.3SimulationResults ...................................................................................... 99 4.6Conclusions...................................................................................................... 104 5.DesignandSimulationofFifthorder0.05°EquirippleLinearPhaseMLFLF OTA-CLowpassFiltersforHDD ReadChannels.................................................... 106 5.1Introduction...................................................................................................... 106 5.2Transistor-levelOTADesign........................................................................... 107 5.2.1SecondOrderEffectsoftheOTA ............................................................ 111 5.2.2FrequencyResponseoftheOTA.............................................................. 112 5.3DesignofFifthorder0.05°EquirippleLinear PhaseLFOTA-CLowpassFilter ................................................................................................................................ 114 5.3.1DesignofCurrent-modeFifthorder0.05° EquirippleLinearPhase LF OTA-CLowpassFilter........................................................................................... 114 5.3.2DesignofVoltage-modeFifthorder0.05°EquirippleLinearPhaseLF LowpassOTA-CFilter........................................................................................... 116 5.4SimulationResultsofCurrent-modeLFandVoltage-modeLFOTA-CFilters ... ................................................................................................................................ 118 5.4.1SimulationResultsofTransistor-levelOTA ............................................ 118 5.4.2.SimulationResultsofCurrent-modeFifthorder0.05° EquirippleLinear PhaseLFLowpassOTA-CFilter........................................................................... 120 5.4.3.SimulationResultsofVoltage-modeFifthorder0.05°EquirippleLinear PhaseLFLowpassOTA-CFilter........................................................................... 123 5.5Conclusions...................................................................................................... 127 6.AnalogueBasebandFilterDesignConsiderationsforHighlyIntegrated Multi-standardReceivers .......................................................................................... 129 Design of High-frequency CMOS Integrated Filters for Computer Hard Disk Drive and Wireless Communication Systems 3 6.1Introduction...................................................................................................... 129 6.2ReceiverAnalogueBasebandandChannelSelectionFilters .......................... 132 6.3Multi-StandardActive-RCFilters.................................................................... 136 6.4Multi-StandardOTA-CFilters......................................................................... 137 6.5DesignandSimulationofMLF OTA-CFilterforMulti-standards................. 140 6.6FutureDirections.............................................................................................. 143 6.7Conclusions...................................................................................................... 144 7.DesignandSimulationofMLFOTA-CFiltersfor WirelessCommunication Receivers ................................................................................................................... 145 7.1Introduction...................................................................................................... 145 7.2TransistorLevelOTADesign.......................................................................... 146 7.3FilterArchitectureandSynthesis..................................................................... 149 7.3.1Current-modeFLFConfiguration............................................................. 150 7.3.2Current-modeLFConfiguration ............................................................... 151 7.3.3Voltage-modeIFLFConfiguration ........................................................... 153 7.3.4Voltage-modeLFConfiguration..............................................................
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