Michael J Josypenko

6344834, Feb 5, 2002

Apr 20, 2000

09/553146

Michael J. Josypenko - Norwich CT

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

H01Q 136

343895

An antenna is provided that can switch from generating a low radiation angle to a high radiation angle. The antenna comprises a quadrifilar helix antenna in which the helical antenna elements have a first pitch at one end of the antenna and a second pitch at the other end of the antenna. Controlling the phase of a driving signal and isolating one section of the antenna are steps that facilitate switching the antenna from generating a pattern with a low elevation angle or high elevation angle.

6407720, Jun 18, 2002

Jun 23, 2000

09/602517

Michael J. Josypenko - Norwich CT

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

H01Q 136

343895, 361328

A quadrifilar helix antenna is provided having a feedpoint for the antenna connecting to individual helical antenna elements. Each antenna element comprises a normal helix element with a plurality of series capacitors inserted along the element length with a maximum capacitor value at a feed end and a minimum capacitor value at a remote or unfed end. Again, the element is not simply a series of connected capacitors-if it were it would not radiate. The element is a normal element, which is inductive, which has had capacitors inserted along its length.

6765541, Jul 20, 2004

Apr 24, 2000

09/558689

Michael J. Josypenko - Norwich CT

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

H01Q 136

343895, 343745, 343749

A quadrifilar helix antenna is provided having a feedpoint for the antenna connecting to individual helical antenna elements. A capacitive network, distributed along the length of the antenna, constitutes a variable frequency shunting network. At each position a first capacitive structure, that may comprise a single capacitor or multiple capacitors in series, interconnects a first pair of opposite antenna elements; a second capacitive structure interconnects the second pair of opposite antenna elements. As an applied frequency increases, the capacitive structures progressively short the opposite antenna elements thereby electrically reducing the antenna length.

7629938, Dec 8, 2009

Jul 24, 2006

11/499976

Michael J. Josypenko - Norwich CT, US

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

H01Q 21/12

343815, 343819

An open Yaggi antenna array is disclosed wherein the reflector element and parasitic director elements of the antenna array are opened in line with the feed point of the driven element so that the reflector and director elements do not cause a shunting effect on the driven element of the antenna.

RE42533, Jul 12, 2011

Jul 20, 2006

11/491534

Michael J. Josypenko - Norwich CT, US

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

H01Q 1/36
H01Q 9/00

343895, 343745, 343749

A quadrifilar helix antenna is provided having a feedpoint for the antenna connecting to individual helical antenna elements. A capacitive network, distributed along the length of the antenna, constitutes a variable frequency shunting network. At each position a first capacitive structure, that may comprise a single capacitor or multiple capacitors in series, interconnects a first pair of opposite antenna elements; a second capacitive structure interconnects the second pair of opposite antenna elements. As an applied frequency increases, the capacitive structures progressively short the opposite antenna elements thereby electrically reducing the antenna length.

8314750, Nov 20, 2012

Apr 28, 2010

12/769195

Michael J. Josypenko - Norwich CT, US

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

H01Q 1/36
H01Q 13/10

343895, 343767, 343770

A slotted bifilar or quadrifilar helix antenna has a plurality of helical antenna elements. The antenna elements have an outer planar surface. A slot element is secured to an interior of the outer planar surface. The slot element extends radially inwardly to a slot element edge. At least two radially opposite slot element edges define a tapered slot. At a shorted point on the antenna, at least one radially opposite pair of slot elements are electrically shorted together. A feed point is axially offset from the shorted point along the antenna axis.

8395559, Mar 12, 2013

Sep 13, 2010

12/880346

Michael J. Josypenko - Norwich CT, US

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

H01Q 13/00
H01Q 9/16

343773, 343793, 343909, 343756, 343872

A forty five degree polarized antenna having grid layers wrapped around a vertically polarized dipole, or grids wrapped internally or externally around a vertically polarized bicone antenna, and having grid segments separated by capacitors that can attenuate, remove or minimize circumferential resonances that appear due to the presence of the grids and reduce the nulling effects from reflections from the innermost grid layer.

8427387, Apr 23, 2013

Sep 30, 2010

12/894658

Michael J. Josypenko - Norwich CT, US

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

H01Q 1/50
H01Q 1/36

343859, 343860, 343865, 343895

A broadband power splitter and phase shifter having a plurality of transmission lines, a 3 db, zero degree power splitter for splitting a signal, an open quadrifilar spiral for receiving a first signal and reflecting power, a modified, open quadrifilar spiral for receiving a second output after a delay and for reflecting power, and wherein a difference between the reflected power from the open quadrifilar spiral and the modified, open quadrifilar spiral in conjunction with a delay provides a constant phase shift over a broad range of frequencies.