A frequency synthesizer for UWB MB-OFDM applications is designed in TSMC 90 nm CMOS technology. It is based on two wideband PLLs capable of settling in less than 300 ns with a 66 MHz external reference. The PLL tuning range (6.6–9.2 GHz) is extended down to 3.4 GHz by a dedicated circuit able to divide the output frequency by 1, 1.5 and 2 with a power consumption of less than 3 mW. Measured data fit the UWB MB-OFDM specifications with an integrated phase noise of 2.8° RMS at maximum output frequency and an aggregate spurious tone power of less than 27 dBc. The joint power consumption is 55 mW and the synthesizer core area occupies less than 0.5 mm2.
M. Guermandi, E. Franchi Scarselli, A. Gnudi (2009). A CMOS 90 nm 55 mW 3.4-to-9.2 GHz 12 Band frequency synthesizer for MB-OFDM UWB. IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 19, 752-754 [10.1109/LMWC.2009.2032027].
A CMOS 90 nm 55 mW 3.4-to-9.2 GHz 12 Band frequency synthesizer for MB-OFDM UWB
GUERMANDI, MARCO;FRANCHI SCARSELLI, ELEONORA;GNUDI, ANTONIO
2009
Abstract
A frequency synthesizer for UWB MB-OFDM applications is designed in TSMC 90 nm CMOS technology. It is based on two wideband PLLs capable of settling in less than 300 ns with a 66 MHz external reference. The PLL tuning range (6.6–9.2 GHz) is extended down to 3.4 GHz by a dedicated circuit able to divide the output frequency by 1, 1.5 and 2 with a power consumption of less than 3 mW. Measured data fit the UWB MB-OFDM specifications with an integrated phase noise of 2.8° RMS at maximum output frequency and an aggregate spurious tone power of less than 27 dBc. The joint power consumption is 55 mW and the synthesizer core area occupies less than 0.5 mm2.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
