Joseph D Anderson

US Patent:

6492947, Dec 10, 2002

Filed:

May 1, 2001

Appl. No.:

09/847100

Inventors:

Joseph M. Anderson - Tucson AZ

Assignee:

Raytheon Company - Lexington MA

International Classification:

H01Q 138

US Classification:

343700MS, 343767, 343846

Abstract:

An aperture coupled microstrip patch antenna coupling circuit. Electromagnetic energy propagating along a stripline feedline is coupled through one of the ground plane surfaces through a tuned aperture to an adjacent microstrip feedline device, which may be a microstrip patch antenna. Undesirable propagation modes are suppressed by enclosing the aperture-coupled slot in a non-resonant cavity. Impedance matching is accomplished with an impedance matching section.

US Patent:

6731241, May 4, 2004

Filed:

Jun 13, 2001

Appl. No.:

09/880423

Inventors:

Pyong K. Park - Tucson AZ
Sang H. Kim - Tucson AZ
Joseph M. Anderson - Tucson AZ
Jack H. Anderson - Medford OR
Kevin P. Grabe - Tucson AZ
David Y. Kim - Northridge CA
Richard M. Oestreich - Tuscon AZ

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 1310

US Classification:

342361, 343771

Abstract:

A dual-polarization common aperture antenna having fully populated common aperture dual polarized arrays. The inventive antenna includes a first and second arrays of radiating slots disposed in a faceplate. The second array is generally orthogonal and therefor cross-polarized relative to the first array. The first array is waveguide fed and the second array is stripline fed. In the illustrative implementation, the first array and the second array share a common aperture. The common aperture is fully populated and each array uses the aperture in its entirety. The first and second arrays of slots are arranged for four-way symmetry. Each slot in the first array is a vertically oriented, iris-excited shunt slot fed by a rectangular waveguide and centered on a broad wall thereof. The second array is a standing wave array in which each slot is an air cavity backed slot fed by an inverted micro-stripline offset from a center thereof.

US Patent:

6778144, Aug 17, 2004

Filed:

Jul 2, 2002

Appl. No.:

10/186556

Inventors:

Joseph M. Anderson - Tucson AZ

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 1310

US Classification:

343767, 343771

Abstract:

An antenna element ( ) comprising a first conductive plane ( ), a second conductive plane ( ), and one or more dielectric layers ( ) separating the first and second conductive planes ( and ). A resonant cavity ( ) is formed by a portion of the first conductive plane ( ), a portion of the second conductive plane ( ) and electrical connections (e. g. , plated vias( )) extending therebetween. A slot ( ) is formed in the portion of the second conductive plane ( ) forming one side of the resonant cavity ( ) and the feedline ( ) extends into the cavity ( ).

US Patent:

8248321, Aug 21, 2012

Filed:

Sep 1, 2009

Appl. No.:

12/552231

Inventors:

Joseph M. Anderson - Tucson AZ, US
Todd Hatch - Tucson AZ, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 13/00

US Classification:

343786, 343772

Abstract:

A dual polarization multi-band antenna may include a waveguide horn, a low band feed section, a transition section, and a high band feed section coupled in series. The waveguide horn may be configured to support propagation of electromagnetic waves in a low band and a high band. The low band feed section may include horizontal and vertical feeds and may be configured to support propagation of electromagnetic waves in the low band and the high band. The high band feed section may include horizontal and vertical feeds and may be configured to support propagation of electromagnetic waves in the high band but not in the low band. The transition section may be configured to couple electromagnetic waves in the high band from the high band feed section to the low band feed section and to constructively reflect electromagnetic waves in the low band.

US Patent:

20130241788, Sep 19, 2013

Filed:

Apr 27, 2012

Appl. No.:

13/457546

Inventors:

Joseph M. Anderson - Tucson AZ, US
Jared W. Jordan - Sahuarita AZ, US
Charles C. Gilbert - Tucson AZ, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 13/00
H01Q 13/10
H01P 11/00
H01Q 13/02

US Classification:

343771, 343772, 343786, 29600

Abstract:

Presently disclosed is an antenna system having an array of ridged waveguide Vivaldi radiator (RWVR) antenna elements fed through a corporate network of suspended air striplines (SAS). The SAS transfers the electromagnetic energy to the radiating element via the ridged waveguide coupler. The Vivaldi radiator matches the output impedance of the ridged waveguide coupler/SAS to the impedance of the surrounding medium. Because the coupling method and the radiating elements are wideband mediums, this antenna array is capable of wideband operation. The physical dimensions of the resulting array are also not as sensitive to its electrical performance as other antenna designs since the bandwidth is quite large, reducing the occurrence of an out-of-specification antenna due to manufacturing tolerance build-up. This also reduces the complexity of the manufacturing process, which in turn lowers cost.

US Patent:

20130241791, Sep 19, 2013

Filed:

Apr 27, 2012

Appl. No.:

13/457547

Inventors:

Joseph M. Anderson - Tucson AZ, US
Jared W. Jordan - Sahuarita AZ, US
Charles G. Gilbert - Tucson AZ, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 1/48

US Classification:

343848

Abstract:

Presently disclosed is an antenna system having an array of ridged waveguide Vivaldi radiator (RWVR) antenna elements fed through a corporate network of suspended air striplines (SAS) with an electromagnetic bandgap (EBG) ground plane surrounding the ridged waveguide transition. The SAS transfers the electromagnetic energy to the radiating element via the ridged waveguide coupler. The Vivaldi radiator matches the output impedance of the ridged waveguide coupler/SAS to the intrinsic impedance of the surrounding medium. The EBG, which may be comprised of a photonic bandgap material or other metamaterial, allows for better frequency and bandwidth performance in a lower-profile array package, thereby reducing size and weight of the array for applications requiring small size and or low-inertia packaging. In alternate embodiments, radiating elements other than Vivaldi radiators may be used. This configuration also reduces the complexity of the manufacturing process, which in turn lowers cost.

US Patent:

20140009346, Jan 9, 2014

Filed:

Jul 9, 2012

Appl. No.:

13/543989

Inventors:

Joseph M. Anderson - Tucson AZ, US
Herbert A. Leach - Tucson AZ, US
Charles G. Gilbert - Tucson AZ, US

Assignee:

Raytheon Company - Waltham MA

International Classification:

H01Q 19/06
H01Q 1/28

US Classification:

343705, 343833

Abstract:

A scanned radio frequency (RF) antenna having a small volume is described.

US Patent:

61812919, Jan 30, 2001

Filed:

Mar 24, 1999

Appl. No.:

9/275585

Inventors:

Joseph M. Anderson - Tucson AZ
Pyong K Park - Tucson AZ

Assignee:

Raytheon Company - Lexington MA

International Classification:

H01Q 2100
H01Q 1310

US Classification:

343816

Abstract:

A compact high-performance antenna. The antenna includes a waveguide (16) for providing or receiving electromagnetic energy. A feed circuit (18, 106, 108, 110) provides or receives the electromagnetic energy to or from the waveguide (16). A radiating circuit (112, 114) provides or receives the electromagnetic energy to or from the feed circuit (18). One or more notches (120) in the feed circuit (108, 110) compensate for insertion phase errors in the electromagnetic energy. One or more tabs (18) in the radiating circuit (112, 114) compensate for radiation phase errors in the electromagnetic energy. In a specific embodiment, the antenna is a dipole antenna and includes an array of dipole cards. The radiating circuit (112, 114) includes first (112) and second (114) radiating circuits included in each of the dipole cards (14). The first (112) and second (114) radiating circuits include a plurality of quarter-wave stripline transformers (24).