William J Chappell

Antibiased Electrostatic RF MEMS Varactors and Tunable Filters

Dimitrios Peroulis, Andrew Kovacs, Xiaoguang Liu, 2010, IEEE Transactions on Microwave Theory and Techniques.

Bandpass–Bandstop Filter Cascade Performance Over Wide Frequency Tuning Ranges

Dimitrios Peroulis, Juseop Lee, William J Chappell, 2010, IEEE Transactions on Microwave Theory and Techniques.

Characterization of electrode surface roughness and its impact on ion trap mass analysis.

Wei Xu, Zheng Ouyang, William J Chappell, 2009, Journal of mass spectrometry : JMS.

Circular arrays of polymer-based miniature rectilinear ion traps.

Zheng Ouyang, Anthony B. Costa, Scott A Smith, 2009, The Analyst.

Miniaturization and geometry optimization of a polymer-based rectilinear ion trap.

Zheng Ouyang, Meng Yu, William J Chappell, 2007, Analytical chemistry.

Toward an implantable wireless cardiac monitoring platform integrated with an FDA-approved cardiovascular stent.

Pedro P Irazoqui, William J Chappell, P. Irazoqui, 2009, Journal of interventional cardiology.

Linear–Nonlinear Interaction and Passive Intermodulation Distortion

Andrew J Christianson, William J Chappell, Justin J Henrie, 2010, IEEE Transactions on Microwave Theory and Techniques.