Edward L Ostertag

US Patent:

6492959, Dec 10, 2002

Filed:

Oct 19, 2000

Appl. No.:

09/692533

Inventors:

Alan E. Heatherwick - Frankfort IL
Edward L. Ostertag - Manhattan IL
Myron D. Fanton - Tinley Park IL
Kerry D. Scharp - Clifton IL
Walter J. Mamak - Lansing IL

Assignee:

Andrew Corporation - Orland Park IL

International Classification:

H01Q 112

US Classification:

343890, 343891

Abstract:

A stacked array antenna system is presented having one or more antenna(s) as part of the supporting structure. This allows more than a single omni-directional antenna to be used with a minimum amount of azimuth pattern degradation. At least one antenna is actually part of the structure. By placing the antenna(s) in the structure, the antenna structure becomes a structural platform for one or more other antenna(s).

US Patent:

60115211, Jan 4, 2000

Filed:

Apr 22, 1997

Appl. No.:

8/840603

Inventors:

Charles M. Knop - Lockport IL
Edward L. Ostertag - New Lenox IL
Gregory S. Orseno - Lockport IL
Robert Gunnels - Lockport IL

Assignee:

Andrew Corporation - Orland Park IL

International Classification:

H01Q 1919

US Classification:

343781P

Abstract:

An omnidirectional microwave antenna comprises a paraboloidal reflector disposed above the ground and facing downwardly with a substantially horizontal aperture and a substantially vertical axis. A vertically oriented feed horn is located below the paraboloidal reflector on the axis of the paraboloidal reflector and has a phase center located near the focal point of the paraboloidal reflector. A conical reflector having a shaped reflecting surface defined by the parameters of a mathematical equation extends downwardly away from the periphery of the feed horn for reflecting radiation received vertically from the paraboloidal reflector in a horizontal direction away from the conical reflector, and for reflecting horizontally received radiation vertically to the paraboloidal reflector. A radome extends downwardly from the outer periphery of the paraboloidal reflector and includes an absorber material for absorbing radiation propagated laterally from the feed horn and the conical reflector above the aperture of the feed horn.

US Patent:

59990716, Dec 7, 1999

Filed:

Jul 31, 1998

Appl. No.:

9/127145

Inventors:

Edward L. Ostertag - Manhattan IL

Assignee:

Andrew Corporation - Orland Park IL

International Classification:

H01P 306
H01P 104

US Classification:

333245

Abstract:

A rigid, coaxial transmission line is provided which includes a plurality of sections joined by connector assemblies. The transmission line includes a plurality of ordered groups. Each of the ordered groups includes a plurality of equal-length sections. The length of the equal-length sections in each ordered group is selected to reduce the VSWR spikes caused by the connector assemblies. The length of the equal-length sections progressively changes between each of the ordered groups.

US Patent:

44108923, Oct 18, 1983

Filed:

May 26, 1981

Appl. No.:

6/267267

Inventors:

Charles M. Knop - Lockport IL
Edward L. Ostertag - New Lenox IL
Donald W. Matz - Lockport IL

Assignee:

Andrew Corporation - Orland Park IL

International Classification:

H01Q 1300

US Classification:

343786

Abstract:

A feed horn for a reflector-type microwave antenna comprises a smooth-walled conical horn and a lining of absorber material on the inside wall of the horn for reducing the width of the RPE (radiation pattern envelope) in the E plane of the antenna. The lining of absorber material extends from the wide end of the conical feed toward the narrow end thereof, terminating at a point where the horn diameter is about 7 times the longest wavelength of the microwave signals being transmitted. The width of the RPE in the E-plane of the antenna can be reduced to be nearly equal to the width of the RPE of the H-plane of the antenna without significantly degrading this H-plane RPE from its shape without absorber and without significantly changing the gain of the antenna.

US Patent:

46268634, Dec 2, 1986

Filed:

Sep 12, 1983

Appl. No.:

6/531069

Inventors:

Charles M. Knop - Lockport IL
Edward L. Ostertag - New Lenox IL

Assignee:

Andrew Corporation - Orland Park IL

International Classification:

H01Q 1919

US Classification:

343781P

Abstract:

A microwave antenna comprising the combination of a paraboloidal main reflector; a subreflector located such that the paraboloidal main reflector and the subreflector have a common focal point lying between the main reflector and the subreflector; a feed horn for transmitting microwave radiation (preferably symmetrically) to, and receiving microwave radiation from, said subreflector; and a shield connected to the peripheral portion of the subreflector and having an absorbing surface which reduces side lobe levels both by capturing the feed horn spillover energy and by reducing the diffraction of microwave radiation from the edge of the subreflector. The shield is preferably formed as a continuous axial projection extending from the periphery of the subreflector toward the main reflector substantially parallel to the axis of the feed horn. The reflective surface of the subreflector is suitably a section of an approximate ellipse.

US Patent:

58094296, Sep 15, 1998

Filed:

Sep 22, 1995

Appl. No.:

8/532141

Inventors:

Charles M. Knop - Lockport IL
Edward L. Ostertag - New Lenox IL
Gregory S. Orseno - Lockport IL

Assignee:

Andrew Corporation - Orland Park IL

International Classification:

H04B 500
H01Q 1322

US Classification:

455523

Abstract:

A radiating coaxial cable comprises an inner conductor, a layer of cellular foam dielectric material surrounding the inner conductor, and a single, continuous, corrugated outer conductor surrounding the dielectric foam layer in direct contact with it. The outer conductor forms at least one row of slots which are configured to produce a radiated field polarized perpendicularly to the axis of the cable to substantially avoid the radiation of a field polarized parallel to the axis of the cable and to provide coupling energy between the interior of the cable and the slots. In this way a substantially constant near-field pattern is produced along the length of the cable across the bandwidth of the cable.

US Patent:

6094174, Jul 25, 2000

Filed:

May 8, 1998

Appl. No.:

9/074973

Inventors:

Charles M. Knop - Lockport IL
Edward L. Ostertag - New Lenox IL
Gregory S. Orseno - Lockport IL
Robert C. Gunnels - Lockport IL

Assignee:

Andrew Corporation - Orland Park IL

International Classification:

H01Q 1914

US Classification:

343781R

Abstract:

An omnidirectional microwave antenna comprises a paraboloidal reflector disposed above the ground and facing downwardly with a substantially horizontal aperture and a substantially vertical axis. A vertically oriented feed horn is located below the paraboloidal reflector on the axis of the paraboloidal reflector and has a phase center located near the focal point of the paraboloidal reflector. A conical reflector having a shaped reflecting surface defined by the parameters of a mathematical equation extends downwardly away from the periphery of the feed horn for reflecting radiation received vertically from the paraboloidal reflector in a horizontal direction away from the conical reflector, and for reflecting horizontally received radiation vertically to the paraboloidal reflector. A radome extends downwardly from the outer periphery of the paraboloidal reflector and includes an absorber material for absorbing radiation propagated laterally from the feed horn and the conical reflector above the aperture of the feed horn.

US Patent:

57174113, Feb 10, 1998

Filed:

Apr 19, 1995

Appl. No.:

8/425078

Inventors:

Charles M. Knop - Lockport IL
Edward L. Ostertag - New Lenox IL
Gregory S. Orseno - Lockport IL

Assignee:

Andrew Corporation - Orland Park IL

International Classification:

H01Q 1310

US Classification:

343771

Abstract:

A radiating waveguide comprises an elongated waveguide with a transverse cross-section dimensioned to carry only the dominant mode at a selected operating frequency. One wall of the waveguide forms a continuous non-resonant longitudinal slot or equivalent thereof to produce a radiated field polarized perpendicularly to the slot. The slot extends substantially parallel to the axis of the waveguide and has a transverse dimension that is sufficiently narrow to substantially avoid the radiation of a field polarized parallel to the slot.