# US 8,786,509 B2 · Multi polarization conformal channel monopole antenna > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,786,509 B2 - Document ID: US8786509B2 - Status: Granted - Kind: B2 - Application number: 12/725,225 - Filed: 2010-03-16 - Published: 2011-09-22 - Granted: 2014-07-22 - Earliest claimed: 2010-03-16 - Assignees: Raytheon Company - Applicants: Richard S. Johnson - Inventors: Richard S. Johnson - Web page: https://patentgrep.com/patent/US8786509B2 ## CPC - H01Q 9/0407: {Substantially flat resonant element parallel to ground plane, e.g. patch antenna (dipole H01Q9/285; monopole H01Q9/40)} - H01Q 21/20: the units being spaced along or adjacent to a curvilinear path {(slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062)} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A conformal channel monopole antenna system includes: a housing; a cavity formed within the housing; and a substrate covering the cavity. The substrate includes a first elongated radiating element coupled to two opposing sides of the top surface of the housing at two opposing ends in a first direction; a second elongated radiating element coupled another two opposing sides of the top surface of the housing at two opposing ends in a second direction orthogonal to the first direction; a first feed port at one end of the first elongated radiating element; and a second feed port at one end of the second elongated radiating element. The first elongated radiating element is configured to radiate a first type of polarization and the second elongated radiating element is configured to radiate a second type of polarization simultaneously with the first type of polarization. ## Claims ### Claim 1 A conformal channel monopole antenna system comprising: a housing having a top surface; a cavity framed within the housing; and a substrate on the housing and placed on top of the cavity, and having a top surface, the substrate-including a first elongated radiating element trace formed on the top surface of the substrate by a first conductive trace and coupled to two opposing sides of the top surface of the housing at two opposing ends in a first direction, wherein the first elongated radiating element has a narrower shape at its two opposing ends than its center; a second elongated radiating element trace formed on the top surface of the substrate by a second conductive trace and coupled to another two opposing sides of the top surface of the housing at two opposing ends in a second direction orthogonal to the first direction, wherein the second elongated radiating element has a narrower shape at its two opposing ends than its center; a first feed port directly connected to one end of the first elongated radiating element trace; and a second feed port directly connected to one end of the second elongated radiating element trace, wherein the first elongated radiating element trace is configured to radiate a first type of polarization and the second elongated radiating element trace is configured to radiate a second type of polarization simultaneously with the first type of polarization, and wherein the first elongated radiating element trace and the second elongated radiating element trace are configured to form said monopole antenna system. ### Claim 2 (depends on 1) The antenna system of claim 1, wherein the first type of polarization is a vertical polarization and the second type of polarization is a horizontal polarization. ### Claim 3 (depends on 1) The antenna system of claim 1, wherein the first type of polarization is a first elliptical polarization and the second type of polarization is a second elliptical polarization. ### Claim 4 (depends on 1) The antenna system of claim 1, wherein the first elongated radiating element and the second elongated radiating element have substantially sinewave shapes. ### Claim 5 (depends on 1) The antenna system of claim 1, wherein the first elongated radiating element and the second elongated radiating element have substantially elliptical shapes. ### Claim 6 (depends on 1) The antenna system of claim 1, wherein the first and second feed ports are fed by a same signal. ### Claim 7 (depends on 1) The antenna system of claim 1, wherein the first feed port is fed by a first signal and the second feed port is fed by a second signal having a phase relationship to the first signal. ### Claim 8 (depends on 1) The antenna system of claim 1, wherein the cavity has four side walls with a 45° slope with respect to the top surface of the housing. ### Claim 9 (depends on 1) The antenna system of claim 1, wherein the housing is a metal box. ### Claim 10 (depends on 1) The antenna system of claim 1, wherein the first and second elongated radiating elements are each a microstrip. ### Claim 11 (depends on 10) The antenna system of claim 10, wherein the first and second elongated radiating elements each taper from a 50 ohm microstrip line to approximately 0.20 inches at their widest point. ### Claim 12 (depends on 1) The antenna system of claim 1, further comprising a third feed port at the other end of the first elongated radiating element; and a fourth feed port at the other end of the second elongated radiating element. ### Claim 13 (depends on 1) The antenna system of claim 1, wherein the other end of the first elongated radiating element and the other end of the second elongated radiating element are terminated with resistive elements.