Harris Corporation

Michael S Zarro

William Dean Killen

Heriberto Jose Delgado

Ahmet D Ergene

An antenna feed system having a single corrugated horn wave guide ports in one of the corrugations, a combiner network which receives signals at approximately 20 GHz from the four wave guide ports and provides sum and difference signals, and a transducer which provides transmit signals at approximately 30 GHz and approximately 44 GHz to a rear end of the single horn.

Tracking feed for multi-band operation

A waveguide () including at least one outer surface () defining a waveguide cavity () and at least one inner surface () positioned within the waveguide cavity (). The inner surface () includes a frequency selective surface (FSS) having a plurality of FSS elements () coupled to at least one substrate. The substrate defines a first propagation medium such that an RF signal having a first wavelength in the first propagation medium can pass through the FSS (). The FSS () is coupled to a second propagation medium such that in the second propagation medium the RF signal has a second wavelength which is at least twice as long as a physical distance between centers of adjacent FSS elements (). The second wavelength can be different than the first wavelength.

Multi-band horn antenna using frequency selective surfaces

A feed structure () for a horn antenna (). The feed structure can include a first waveguide () and a second waveguide () having a first portion at least partially disposed within the first waveguide. The second waveguide also can include a second portion intersecting a first wall () of the first waveguide. The first wall can include a first frequency selective surface () at an intersection () of the first wall and the second portion of the second waveguide. The first waveguide can be operatively coupled to a first horn section () and the second portion can be operatively coupled to a second horn section ().

FSS feeding network for a multi-band compact horn

An antenna () for microwave radiation including a first horn () which includes a plurality of corrugations (). At least one of the corrugations () is formed of a frequency selective surface (FSS) (). The FSS has a plurality of FSS elements () coupled to at least one substrate (). The substrate () can define a first propagation medium such that an RF signal having a first wavelength in the first propagation medium can pass through the FSS (). The FSS () is coupled to a second propagation medium such that in the second propagation medium the RF signal has a second wavelength which is at least twice as long as a physical distance between centers of adjacent FSS elements ().

Multi-band horn antenna using corrugations having frequency selective surfaces

An antenna feed system comprises a single horn having corrugations and four evenly spaced waveguide ports on sides of a single one of the corrugations. A combiner network receives signals at approximately 20 GHz from the four waveguide ports and outputs sum and difference output signals. A transducer provides transmit signals at approximately 30 GHz and approximately 44 GHz to a rear end of the single horn.

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Melbourne, FL, United States of America

Michael S Zarro