Alfred R. Lopez

IEEE Life Fellow

Hazeltine Fellow

BAE Systems Fellow


Tel:              631.499.4750

Fax:             631.499.2987

Cell:             631.357.9342


Consulting Services

RF Radiating Systems

Antenna Design

Antenna System Design

Small Antennas

Impedance Matching

Phased Array Antennas

Aircraft Landing System Antennas

RF Propagation

Multipath Analysis




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Downloadable PDF Files:


2006 Digital Wideband Small Antenna Systems

Body Worn


1950 Wideband Matching, WL Report 418  

1955 WL Report 665

1956-75 VLF Antenna Design Data

1982 Synthesis Double-Tuned Wideband Match

1982 Circuit Representation Radiation Disc Mono

1983 Goubau design of a disc-loaded monopole

1999 Harold A. Wheeler’s Legacy


2012 The World’s Biggest Little Antenna


Wheeler Antenna Design Legacy

2007 Small Antennas & Impedance Matching

2007 Small Ant. & Z Matching LISAT ppt

Small Antennas

2006 Validation of Wheeler's Formulas

Impedance Matching

1973 Wheeler Matching

2004 Fano Matching

2004 More on Fano Matching

2005 Rebuttal - Fano Matching

2007 Wheeler & Fano Impedance Matching

2009 Rebuttal Correct Impedance Matching

2012 Double-Tuned Impedance Matching

2012 Impedance Matching Equation

2013 LIAP Z Match Equation

GPS-Based Aircraft Landing Systems

2000 Ground Reference Antenna

2001 Ground Ref Antenna - Calibration

2003 Ground Ref Antenna - Cir Pol Effects

2004 Ground Ref Antenna - Siting

2008 BAE Systems ARL-1900 Antenna

2010 GPS Landing System Reference antenna

Array Antennas

1968 Series Feed Network

1971 Sum Aperture Efficiency

1973 Wideband Dual-Polarized Element

1979 Sharp Cutoff Patterns

1981 Optimum Difference Slope

Geometrical Diffraction

1966 Antenna Pattern & Impedance

1970 Complex Incident Fields

1987 Wedge Diffraction Humped Runways

1989 Complex Runway Centerlines

1998 Cellular Com Shadowing Wedge Dif

Microwave Landing System

1977 Multipath & Antenna Design Philosophy

1981 Sidelobe Requirements

Instrument Landing System

1994 Glideslope Antenna - Wet Snow Effects

1995 Suppressed Image Glideslope Antenna

Propagation and Multipath

1972 Airport Multipath

1999 Warrior to Warrior Communication

WIPL-D Software

2008 WIPL-D Validates Babinet’s Principle