Frequency Synthesizer for Multi-Band Multi- Standard Base ......3G LTE WiMAX TDD FDD FDD FDD TDD TDD TDMA TDMA TDMA Atleast 11 sub bands have to be served And furthers Radio Frequency
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High-frequency performance: comparable to GaAs, better than CMOSLow-frequency phase noise: much better than CMOS, better than GaAsHigh-frequency phase noise: better than CMOS (@ same technology node),
inferior to GaAsCost: cheaper than GaAs, more expensive than CMOS in volume
Combines advantages SiGe HBTs with complexity of CMOSBiCMOS process allows for combining analog and digital functions(channel selection) on the same chip
Type –II, Single loop PLLVCO frequency ~ 20 - 28 GHz (Qind ~ f, Qvar ~ 1/f )5 bit digital tuning and fine analog tuningLow PFD/CP, loop filter noise gain
Higher charge pump current reduces in-band phase noise,(charge pump noise PSD ~ , transfer function ~ )Higher current increases phase noise at very large offset
1 „A Family of Low-Power Truly Modular Programmable Dividers in Standard 0.35-m CMOS Technology“, Cicero S.Vaucher et. al., IEEE Journal of Solid-State Circuits, VOL. 35, NO. 7, JULY 2000
Div value 2n to 2n+1-1
Div value 2n‘min to 2n+1-1
11 bit, div value: 3 to 2048input frequency 10 GHz (simulation with parasitic extraction)
M. Tiebout, et al., “A Fully Integrated 13GHz DS Fractional-N PLL in 0.13 µm CMOS,” in IEEE Int. Solid-state Circuits Conf. (ISSCC) Dig. Tech. Papers, vol. 47, 2004, pp. 386-387
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H. Hashemi, et al., “A 24-GHz SiGe Phased-Array Receiver-LO Phase-Shifting Approach,”IEEE Tran. Micro. Theory Tech., vol. 53, pp. 614-626, Feb. 2005
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3 O. Mazouffre, et al., “A 23-24 GHz Low Power Frequency Synthesizer in 0.25 µm SiGe,” in Proc. of the 13th European Gallium Arsenide and other Compound Semiconductors Application Symposium, Paris, France, Oct. 2005, pp. 533-536
F. Herzel, S. Glisic, and W. Winkler, “Integrated frequency Synthesizer in SiGe BiCMOSTechnology for 60 and 24 GHz Wireless Applications,” Electronics letters, vol. 43, pp. 154-156, Feb. 2007.
W. Winkler, et al. “A Fully Integrated BiCMOS PLL for 60GHz Wireless Applications,” in IEEE Int. Solid-state Circuits Conf. (ISSCC) Dig. Tech. Papers, vol. 48, 2005, pp. 406-407