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- Mark C. Leifer
- Magnetic resonance in medicine
- 1997

This paper presents the theory of the quadrature birdcage coil wound on an elliptic cylindrical former. A conformal transformation of the ellipse to a circular geometry is used to derive the optimalâ€¦ (More)

- Mark C. Leifer, Vaishnavi Chandrasekar, Elyahu Perl
- 2013 IEEE International Symposium on Phased Arrayâ€¦
- 2013

An initial study performed for the FAA and NOAA explores dual-polarization implementation options for a multifunction phased array radar (MPAR) that could replace the nation's air and weatherâ€¦ (More)

- Stuart E. Williams, Mark C. Leifer, Vaishnavi Chandrasekar
- 2014 IEEE Radar Conference
- 2014

A concept for a Multi-Function Phased Array Radar (MPAR) to provide next generation simultaneous aircraft and weather surveillance has been developed. This paper discusses a number of system designâ€¦ (More)

- Mark C. Leifer, Randy L. Haupt
- 2016 IEEE Radar Conference (RadarConf)
- 2016

This paper examines the effects of time-domain pulse droop on linear FM chirp signals used in pulse compression radar. The radar literature is oddly quiet on how to specify power amplifier droop forâ€¦ (More)

- Mark C. Leifer
- 2010 IEEE International Symposium on Phased Arrayâ€¦
- 2010

Phased array designers routinely analyze beam patterns in the u-v plane, to ensure that aliasing locations (called grating lobes) remain outside the visible beam region. A related spatial aliasingâ€¦ (More)

- Mark C. Leifer, J C Griffin, D. C. Harrison, J. P. Wikswo
- Journal of electrocardiology
- 1986

Ionic currents flowing during the activation of the heart generate both electric potentials which can be recorded at the body surface as the electrocardiogram or ECG and magnetic fields which canâ€¦ (More)

- Mark C. Leifer
- 2016 IEEE International Symposium on Phased Arrayâ€¦
- 2016

This paper revisits a method of synthesizing array beam patterns using phase weights. The original paper by Kinsey suggested the technique but omitted implementation details. The present paperâ€¦ (More)

- Mark C. Leifer, V. Chandrasekar, Stuart Williams
- 2016 IEEE International Symposium on Phased Arrayâ€¦
- 2016

Our team has performed trade and design studies for the FAA and NOAA of multifunction phased array radar (MPAR) concepts that would combine the functionalities of air traffic control, airâ€¦ (More)

- Mark C. Leifer
- 2009 IEEE Antennas and Propagation Societyâ€¦
- 2009

The two-wave spatial squared correlation function is useful for designing large sparse diversity arrays that are alias-free and have both low average and low peak correlations. The largest 12 elementâ€¦ (More)

- Mark C. Leifer
- Proceedings of the 2012 IEEE Internationalâ€¦
- 2012

Why do square antennas produce circular main beams? An intuitive answer to this question comes from applying a series expansion to the expression for the far-field radiation pattern, which, in turn,â€¦ (More)