John Wesley Wills

US Patent:

43161944, Feb 16, 1982

Filed:

Nov 24, 1980

Appl. No.:

6/209809

Inventors:

Charles M. De Santis - Neptune NJ
John R. Wills - Ocean Grove NJ

Assignee:

The United States of Americal as represented by the Secretary of the Army - Washington DC

International Classification:

H01Q 1310
H01Q 128

US Classification:

343700MS

Abstract:

A single antenna having hemispherical coverage with circular polarization very low axial ratio is disclosed. Its pancake structure comprises two stacked microstrip antennas, one atop the other, each fed phase shifted in relation to the other. Used as transmitter or receiver antenna, it replaces conventional hemispherical types with an extremely compact and relatively inexpensive device.

US Patent:

43131212, Jan 26, 1982

Filed:

Mar 13, 1980

Appl. No.:

6/129969

Inventors:

Donn V. Campbell - Eatontown NJ
Charles M. DeSantis - Neptune NJ
John R. Wills - Ocean Grove NJ

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

H01Q 936

US Classification:

343790

Abstract:

A VHF monopole antenna unit, particularly adapted for operation in the 30 MHz frequency range, yet capable of embodiment in a compact structure only approximately 11/2 feet in height is described. Coarse tuning is accomplished in a number of switched bands, for each of which is provided a specially designed matching network comprised of inexpensive L-networks of inductors and capacitors. Tuning is accomplished through adjustment of inductor elements. The simple, inexpensive design of the matching circuits eliminates need for intricate mechanisms typically used for automatic impedance matching over a wide band and also for a broadband impedance matching transformer. The compactness made available by the unique top-load structure design is further made possible by provision of a specially designed dielectric filled vertical antenna element, accomplishing the same range and efficiency in an even more compact antenna.

US Patent:

44438036, Apr 17, 1984

Filed:

Nov 23, 1981

Appl. No.:

6/323835

Inventors:

Charles M. DeSantis - Neptune NJ
Albert H. Zannella - Mount Carmel PA
Michael W. Begala - Fairhaven NJ
John R. Wills - Ocean Grove NJ
Watson P. Czerwinski - Forked River NJ

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

H01Q 936

US Classification:

343749

Abstract:

A low-profile survivable antenna suitable for military use is described. pite its small size, which might be one tenth of a wavelength, the antenna has reasonable transmission range for these applications. Very little operator attention is needed in use, since a special matching circuit within the antenna network enables effective impedance matching, over a 3:1 frequency range, without necessity of switching to different matching circuits over different frequency bands. By including resistive components along with other passive inductive or capacitive elements, the reactance of the single matching circuit is made to effectively compensate the antenna's impedance over the entire frequency range. The impedance of the circuit has a decreasing positive reactance which compensates for the decreasing negative reactance, with frequency, of the antenna. Although the transmission efficiency of the matched antenna network is somewhat diminished by resistive losses, it is still satisfactory, and band switching with this matching circuit is completely eliminated.

US Patent:

43285015, May 4, 1982

Filed:

Apr 23, 1980

Appl. No.:

6/142917

Inventors:

Charles M. DeSantis - Neptune NJ
Albert H. Zannella - Mount Carmel PA
Michael W. Begala - Fairhaven NJ
John R. Wills - Ocean Grove NJ
Watson P. Czerwinski - Forked River NJ

Assignee:

The United States of America as represented by the Secretary of the Army - Washington DC

International Classification:

H01Q 936

US Classification:

343749

Abstract:

A low-profile survivable antenna suitable for military use is described. pite its small size, which might be one tenth of a wavelength, the antenna has reasonable transmission range for these applications. Very little operator attention is needed in use, since a special matching circuit within the antenna network enables effective impedance matching, over a 3:1 frequency range, without necessity of switching to different matching circuits over different frequency bands. By including resistive components along with other passive inductive or capacitive elements, the reactance of the single matching circuit is made to effectively compensate the antenna's impedance over the entire frequency range. The impedance of the circuit has a decreasing positive reactance which compensates for the decreasing negative reactance, with frequency, of the antenna. Although the transmission efficiency of the matched antenna network is somewhat diminished by resistive losses, it is still satisfactory, and band switching with this matching circuit is completely eliminated.