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Engineering - Circuits & Systems | Fast Hopping Frequency Generation in Digital CMOS

Fast Hopping Frequency Generation in Digital CMOS

Farazian, Mohammad, Larson, Lawrence E., Gudem, Prasad S.

2013, XIV, 154 p.

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  • Focuses on frequency synthesizers for UWB radio and similar systems
  • Includes designs and methodology that can be used in any fast agile frequency hopping system 
  • Focus is on a digital-centric design approach for UWB frequency synthesis 
  • Demonstrates thorough analysis for a group of frequency dividers such as Injection-locked frequency dividers, and regenerative injection-locked frequency dividers, and others
  • Provides a comprehensive review of the published works on this subject

Overcoming the agility limitations of conventional frequency synthesizers in multi-band OFDM ultra wideband is a key research goal in digital technology. This volume outlines a frequency plan that can generate all the required frequencies from a single fixed frequency, able to implement center frequencies with no more than two levels of SSB mixing. It recognizes the need for future synthesizers to bypass on-chip inductors and operate at low voltages to enable the increased integration and efficiency of networked appliances. The author examines in depth the architecture of the dividers that generate the necessary frequencies from a single base frequency and are capable of establishing a fractional division ratio.

 

Presenting the first CMOS inductorless single PLL 14-band frequency synthesizer for MB-OFDMUWB makes this volume a key addition to the literature, and with the synthesizer capable of arbitrary band-hopping in less than two nanoseconds, it operates well within the desired range on a 1.2-volt power supply. The author’s close analysis of the operation, stability, and phase noise of injection-locked regenerative frequency dividers will provide researchers and technicians with much food for developmental thought.

Content Level » Research

Keywords » Multi-band OFDM - OFDM - OFDM modulation - digital centric design - fast hopping synthesizer - frequency dividers - inductor-less design methodology - injection-locked frequency dividers - injection-locked oscillators - orthogonal frequency division multiplexing - power combiners for UWB frequency - synthesizer - ultra wideband circuits - ultra wideband communication

Related subjects » Circuits & Systems - Electronics & Electrical Engineering - Signals & Communication

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