# US 8,570,232 B2 · Broadband antenna > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,570,232 B2 - Document ID: US8570232B2 - Status: Granted - Kind: B2 - Application number: 13/001,394 - Filed: 2009-07-02 - Published: 2011-07-07 - Granted: 2013-10-29 - Earliest claimed: 2008-10-30 - Assignees: Rohde & Schwarz GmbH & Co. KG - Applicants: Berthold Klos; Dietmar Leugner; Ludwig Nielsen - Inventors: Berthold Klos; Dietmar Leugner; Ludwig Nielsen - Web page: https://patentgrep.com/patent/US8570232B2 ## CPC - H01Q 5/00: Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements (combinations of separate active antenna units operating in different wavebands and connected to a common feeder system H01Q21/30) - H01Q 5/40: Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements - H01Q 9/16: with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole (H01Q9/44 takes precedence) - H01Q 9/30: with feed to end of elongated active element, e.g. unipole (H01Q9/44 takes precedence) - H01Q 21/30: Combinations of separate antenna units operating in different wavebands and connected to a common feeder system - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract An antenna comprises a monopole and a dipole. The dipole provides a first antenna element and a second antenna element, which provide a common longitudinal axis with the longitudinal axis of a monopole. The first antenna element of the dipole is connected to the second antenna element of the dipole and to the monopole. The monopole bears the dipole. The antenna further contains a decoupling element, which is disposed between the monopole and the dipole. ## Claims ### Claim 1 An antenna comprising: a monopole comprising at least two antenna elements and a loading element, the loading element configured to implement an impedance matching; a dipole comprising a first antenna element and a second antenna element, which provide a common longitudinal axis with the longitudinal axis of the monopole; and a decoupling element disposed between the monopole and the dipole. ### Claim 2 (depends on 1) The antenna according to claim 1, wherein the first antenna element of the dipole is connected to the second antenna element of the dipole and to the monopole and the monopole bears the dipole. ### Claim 3 (depends on 1) The antenna according to claim 1, wherein the monopole is designed at least partially in a tubular form, the antenna contains a line, the line is disposed at least partially within the monopole, and the line is connected at a connection point to the dipole. ### Claim 4 (depends on 3) The antenna according to claim 3, wherein the decoupling element attenuates sheath waves. ### Claim 5 (depends on 3) The antenna according to claim 3, wherein the decoupling element contains a plurality of ferrite cores and the line is guided through at least a part of the ferrite cores. ### Claim 6 (depends on 3) The antenna according to claim 3, wherein the antenna element of the dipole is designed at least partially in a tubular manner and the connection point of the line to the dipole is disposed on the outside of the first antenna element. ### Claim 7 (depends on 3) The antenna according to claim 3, wherein an earth line is connected at a connection point to the inside of the first antenna element of the dipole and the earth line is connected at a connection point to the inside of the second antenna element of the dipole. ### Claim 8 (depends on 7) The antenna according to claim 7, wherein a portion of the inside of the first antenna element limited by the connection point of its inside with the earth line and by its end facing towards the second antenna element forms a first inductance connected in parallel to the first antenna element of the dipole, a portion of the inside of the second antenna element limited by the connection point of its inside with the earth line and by its end facing towards the first antenna element forms a second inductance connected in series to the second antenna element of the dipole, the first inductance and the second inductance form a transformer, and the transformer implements an impedance matching. ### Claim 9 (depends on 3) The antenna according to claim 3, wherein the line tapers in the direction towards its connection point with the dipole and that the tapering achieves an impedance matching. ### Claim 10 (depends on 3) The antenna according to claim 3, wherein the monopole is disposed on the housing, the housing contains a filter, the filter allocates signals of a high-frequency range to the dipole and signals of a low frequency range to the monopole, and the filter is connected to the line and the monopole. ### Claim 11 (depends on 3) The antenna according to claim 3, wherein the line is formed at least partially as a strip line on a substrate and the substrate is disposed at least partially in the interior of the antenna. ### Claim 12 (depends on 1) The antenna according to claim 1, wherein the monopole and the dipole are connected via a diplexer to a common contact point. ### Claim 13 (depends on 1) The antenna according to claim 1, wherein at least one part of the monopole is formed as a fold-over element. ### Claim 14 (depends on 1) The antenna according to claim 1, wherein the loading element comprises at least one ferrite core, the line is guided through the ferrite core, and an outer conductor of the line is connected to the ends of the first and second antenna elements of the monopole facing towards the loading element.