Title :
A fast frequency-switching synthesizer with an integration circuit
Author :
Nosaka, Hideyuki ; Nakagawa, Tadao ; Yamagishi, Akihiro
Author_Institution :
NTT Wireless Syst. Labs., Yokosuka, Japan
fDate :
12/1/1998 12:00:00 AM
Abstract :
A new type of direct frequency synthesizer, which can complete frequency switching in less than a microsecond, is proposed. This yields low-spurious outputs by using a low-power analog integration circuit, whose operating principle is similar to a digital accumulator. Experimental results demonstrate successful frequency synthesizer operation
Keywords :
frequency synthesizers; integrating circuits; switching circuits; direct frequency synthesizer; frequency-switching synthesizer; low-power analog integration circuit; low-spurious outputs; synthesizer operation; Circuits; Clocks; Communication switching; Frequency synthesizers; Phase locked loops; Read only memory; Spread spectrum communication; Switches; Tuning; Voltage;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
