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Download Encyclopedia of RF and Microwave Engineering by Kai Chang PDF

By Kai Chang

RF and Microwave Engineering is without doubt one of the quickest progress parts of the previous decade and may most likely stay a truly lively sector of study and alertness in a wide number of fields. The six quantity set of Encyclopedia of RF and Microwave Engineering illustrates how this box has been the major to permitting expertise accountable for the exceptional progress of instant communications. This set additionally examines how RF and microwave engineering maintains to have nice effect because the know-how in the back of such very important purposes as radar, distant sensing, handheld remote control, sensors, navigation, surveillance, digital struggle, radiometers, plasma learn, and imaging.

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  • AAP Awards for Excellence in specialist and Scholarly Publishing, 2006

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If a ramp input varying from 0 to full scale is applied to the folder with folding factor n, the output of the folder will change from Vmin to Vmax, n times. A/D AND D/A CONVERSION ARCHITECTURES AND TECHNIQUES 11 VDD RL RL OUT+ OUT− M1 M2 M3 M4 Vr1 Vin M5 M6 Vr2 M8 Vr3 Ib Ib M7 Vr4 Ib OUT Ib Ideal folder waveform Ib Actual folder waveform Vmax OUT+ Vmin OUT− Vr1 Vr2 Vr3 This effect results in frequency multiplication by n. Hence the bandwidth and slewing requirements for the folder is n times the maximum allowable input frequency.

10 A/D AND D/A CONVERSION ARCHITECTURES AND TECHNIQUES of preamplifiers has been reduced by 2 for this flash A/D converter for the given resolution. Thus a reduction in the number of preamplifiers is achieved for a given resolution by interpolation. But the overall number of latches required is still the same as in a pure flash A/D converter. To further reduce component count and power consumption, interpolation is generally used alongside folding to enable further area and power savings [24]. Folding will be discussed in detail in the next section.

A/D AND D/A CONVERSION ARCHITECTURES AND TECHNIQUES 11 VDD RL RL OUT+ OUT− M1 M2 M3 M4 Vr1 Vin M5 M6 Vr2 M8 Vr3 Ib Ib M7 Vr4 Ib OUT Ib Ideal folder waveform Ib Actual folder waveform Vmax OUT+ Vmin OUT− Vr1 Vr2 Vr3 This effect results in frequency multiplication by n. Hence the bandwidth and slewing requirements for the folder is n times the maximum allowable input frequency. Therefore, folding with a high folding factor is not effective at high operating frequencies. Another drawback of the folding is substantial nonlinearity in the folder waveform.

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