Here are some recent publications (most are from pre-Utah RF IC Lab work done at the University of Washington):

H. Zarei, C. T. Charles, and D. J. Allstot, "Low-Loss Reflective Type-Phase Shifters for Multiple-Antenna Receivers," IEEE Transactions on Circuits and Systems I, Vol. 54, No. 8, pp. 1647-1656, Aug. 2007.

C. T. Charles and D. J. Allstot, "Design Considerations for Integrated CMOS Reflective-Type Phase Shifters," Analog Integrated Circuits and Signal Processing, Vol. 50, No. 3, pp. 221-229, Mar. 2007.

D. J. Allstot, C. T. Charles, S. Kodali, X. Li, D. Ozis, J. Paramesh, S. Shekhar and J. S. Walling, "CMOS Integrated Transformers: Coming of Age," International Conference on Solid-State and Integrated Circuit Technology, Shanghai, China, Oct. 2006.

D.J. Allstot, C.T. Charles, D. Ozis, S. Shekhar and J.S. Walling, "RF CMOS design: Living with the substrate," IEEE Intl. Microwave Symposium Workshop: Substrate Effect in Si RFIC Interconnects, June 2006, pp. 48-66.

C.T. Charles and D. J. Allstot, "A 2-GHz Integrated CMOS Reflective-Type Phase Shifter With 675 degree Control Range," International Symposium on Circuits and Systems, Kos, Greece, May 2006, pp. 381-384.

C. T. Charles and D. J. Allstot, "A Calibrated Phase/Frequency Detector for Reference Spur Reduction in Charge-Pump PLLs," IEEE Transactions on Circuits and Systems II, Vol. 53, Issue 9, pp. 822-826, Sept. 2006.

C. T. Charles and D. J. Allstot, "A 360 degree Extended Range Phase Detector for Type-I PLLs," International Symposium on Circuits and Systems, Kobe, Japan, May 2005, pp. 5457-5461.

R. R. Harrison and C. T. Charles, "A low-power low-noise CMOS amplifier for neural recording applications," IEEE Journal of Solid-State Circuits, 38: 958-965, June 2003.