Ronald E Brandau, 90914 Chamberlin St, Nelson, IL 61021

6496084, Dec 17, 2002

Aug 9, 2001

09/925752

Thomas D. Monte - Lockport IL
Ronald J. Brandau - Lockport IL

Andrew Corporation - Orlando Park IL

H01P 512

333121, 333125, 333137, 333 21 A

An ortho-mode transducer has a common port having a longitudinal axis, a single-polarized back port having a longitudinal axis, a transition element connecting the common port and the single-polarized back port, the longitudinal axis of the single-polarized back port being substantially aligned with the longitudinal axis of the common port; a single-polarized side port, and a hybrid tee waveguide junction connecting the single-polarized side port to the transition element. The hybrid tee waveguide junction includes a balanced pair of side arm waveguides connecting the single-polarized side port to the transition element. The ortho-mode transducer prevents the generation of higher order modes, and ensures high isolation in a compact three-dimensional profile.

RE40434, Jul 15, 2008

Aug 6, 2001

09/923943

Russell W. Dearnley - Naperville IL, US
Ronald J. Brandau - Lockport IL, US
George Xu - Vic, AU

Andrew Corporation - Westchester IL

H01Q 21/00

343817, 343797, 343810

An antenna for receiving electromagnetic signals comprises: a ground plane with a length and having a vertical axis along the length. A plurality of dipole radiating elements, the radiating elements are comprised of first and second co-located, orthogonal dipoles, the dipoles are aligned at first and second predetermined angles with respect to the vertical axis, the radiating elements and ground plane produce first electromagnetic fields in response to said electromagnetic signals. A plurality of supports, the supports are connected to the ground plane and perpendicular to the vertical axis and placed between selected of the plurality of dipole radiating elements. A plurality of metallic parasitic elements are placed in a selected of said plurality of supports, the first electromagnetic fields exiciting currents in said metallic parasitic elements, the currents creating second electromagnetic fields, the second electromagnetic fields canceling with portions of the first electromagnetic fields.

8324983, Dec 4, 2012

Oct 11, 2010

12/901760

Ronald J. Brandau - Lockport IL, US

Andrew LLC - Hickory NC

H01P 3/12
H01P 5/12

333113, 333122

A waveguide coupler is provided with a trough portion with a first trough and a second trough. A coupling slot between the inner sidewalls of the first and second troughs communicates between the first trough and the second trough. A cover closes the first trough and the second trough to form first and second waveguides. The cover includes a protrusion surface with protrusions extending into the first trough and the second trough. The protrusions form a stepped ridge with a plurality of steps in height, if desired, lateral position. The steps are provided with a maximum inward extension and a minimum lateral distance from the coupling slot at a center step proximate a center of the coupling slot. The coupler is selectable between a high coupling level and a low coupling level by exchanging the cover applied to the trough portion between a flat surface and the protrusion surface.

8581795, Nov 12, 2013

Sep 12, 2011

13/229829

Stephen W Simms - Dunferminline, GB
Ronald J Brandau - Homer Glen IL, US
Junaid Syed - Kirkcaldy, GB
Douglas John Cole - Powmill, GB
Chistopher D Hills - Glenrothes, GB

Andrew LLC - Hickory NC

H01Q 13/00

343781CA, 343781 P

A front feed reflector antenna with a dish reflector has a reflector focal length to reflector diameter ratio of less than 0. 25. A wave guide is coupled to a proximal end of the dish reflector, projecting into the dish reflector along a longitudinal axis. A dielectric block is coupled to a distal end of the waveguide and a sub-reflector is coupled to a distal end of the dielectric block. A shield is coupled to the periphery of the dish reflector. The sub-reflector diameter is dimensioned to be 2. 5 wavelengths or more of a desired operating frequency.

2002010, Aug 1, 2002

Jan 18, 2002

10/050525

Ronald Brandau - Lockport IL, US

H01Q013/00

343/785000, 343/786000, 343/772000

A feed horn assembly has an elongated horn portion having an end aperture and a generally cylindrical metallic interior surface and an elongated dielectric rod portion substantially centered with respect to the horn portion and having an elongated tapered end part extending in the direction of the horn aperture is described. The same type of feed horn assembly with the cylindrical metallic portion removed so as to leave only the tapered dielectric rod to provide small blockage. The horn is designed so as to have a minimal diameter and length and yet can produce a symmetrical horn pattern with a substantially stationary phase center over a large bandwidth. The design procedure also allows maintenance of these symmetrical patterns over a large gain range (6 to 18 dbi).

2011008, Apr 7, 2011

Oct 2, 2009

12/572493

Ian Renilson - Dalgety Bay, GB
Ronald J. Brandau - Homer Glen IL, US
Julian Stephens - Strafford upon Avon, GB

ANDREW LLC - Hickory IL

F16D 1/00

403 24

A cone to boom interconnection, the cone provided with an annular mating groove of the cone dimensioned to receive a distal end of the boom. At least one retention groove and at least one gasket groove provided in the sidewall(s) of the mating groove. Alternatively, the gasket groove may be provided in a distal end of the boom. A gasket seated in the at least one gasket groove, sealing between the sidewall of the mating groove and the boom. A glue between the boom and the annular mating groove. The glue adhered to the boom as an annular retention lip within the at least one retention groove, whereby the cone is mechanically retained upon the boom.

2012000, Jan 12, 2012

Mar 12, 2010

13/257226

Ronald J. Brandau - Homer Glen IL, US
Haidong Chen - Nanjing, CN
Li Zhang - Suzhou, CN

ANDREW LLC - Hickory NC

H01Q 1/00
B23P 11/00

343907, 29428

A microwave antenna feed arrangement provided with a unitary body with a feed bore between a launch end and a back end of the body. A plurality of coaxial annular grooves are located on the launch end of the body. An OMT bore in the body extends from a side of the body to the feed bore. The body may be further configured with an end cap to close the back end of the feed bore or a feed elbow for dual polarization operation. The body may be manufactured for example, by machining or metal injection molding.

2013005, Mar 7, 2013

Sep 1, 2011

13/224066

Ronald J. Brandau - Homer Glen IL, US
Christopher D. Hills - Glenrothes, GB

ANDREW LLC - Hickory NC

H01Q 19/19

343781CA

A dielectric cone radiator sub-reflector assembly for a reflector antenna with a waveguide supported sub-reflector is provided as a unitary dielectric block with a sub-reflector at a distal end. A waveguide transition portion of the dielectric block is dimensioned for coupling to an end of the waveguide. A dielectric radiator portion is provided between the waveguide transition portion and a sub-reflector support portion. An outer diameter of the dielectric radiator portion is provided with a plurality of radial inward grooves and a minimum diameter of the dielectric radiator portion is greater than ⅗ of a sub-reflector diameter of the sub-reflector support surface.