# US 2013/0278472 A1 · Antenna Arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2013/0278472 A1 - Document ID: US20130278472A1 - Status: Published application - Kind: A1 - Application number: 13/864,449 - Filed: 2013-04-17 - Published: 2013-10-24 - Earliest claimed: 2012-04-24 - Assignees: Renesas Mobile Corporation - Applicants: Renesas Mobile Corporation - Inventors: Marko Tapio Autti; Seppo Rousu - Web page: https://patentgrep.com/patent/US20130278472A1 ## CPC - H01Q 5/321: within a radiating element or between connected radiating elements - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract Apparatus, methods, computer software and computer program products are provided for tuning a user equipment antenna to simultaneously operate at more than one resonant frequency by combining a first electrical load and a first frequency selective component to tune the antenna to a first resonant frequency with respect to signals in a first frequency range, and combining a second electrical load and a second frequency selective component to tune the antenna to a second resonant frequency with respect to signals in a second frequency range. The first electrical load, the second electrical load, the first frequency selective component and the second frequency selective component act to tune the antenna to operate simultaneously at the first resonant frequency and the second resonant frequency. ## Claims ### Claim 1 User equipment antenna apparatus comprising: a first electrical load; a second electrical load; a first frequency selective component; and a second frequency selective component, wherein the first electrical load and the first frequency selective component are adapted to tune the antenna to a first resonant frequency with respect to signals in a first frequency range, wherein the second electrical load and the second frequency selective component are adapted to tune the antenna to a second resonant frequency with respect to signals in a second frequency range, and wherein the first electrical load, the second electrical load, the first frequency selective component and the second frequency selective component are adapted to tune the antenna to operate simultaneously at at least the first resonant frequency and the second resonant frequency. ### Claim 2 (depends on 1) Apparatus according to claim 1, wherein the first frequency selective component is adapted to selectively pass signals in the first frequency range between the antenna and the first electrical load, and wherein the second frequency selective component is adapted to selectively pass signals in the second frequency range between the antenna and the second electrical load. ### Claim 3 (depends on 1) Apparatus according to claim 1, wherein the first frequency selective component and the second frequency selective component each comprise, a filter. ### Claim 4 (depends on 2) Apparatus according to claim 2, wherein the range of frequencies frequency selective component is controllable, whereby to alter the range frequencies comprised by at least one of the first frequency range and the second frequency range. ### Claim 5 (depends on 1) Apparatus according to claim 1, wherein the impedance of at least one of the first electrical load and the second electrical load is controllable, whereby to alter at least one of the first resonant frequency and the second resonant frequency. ### Claim 6 (depends on 1) Apparatus according to claim 1, comprising a control module adapted to perform one or more of: alter the range of frequencies passed by at least one of the first frequency selective component and the second frequency selective component; and alter the impedance of at least one of the first electrical load and the second electrical load. ### Claim 7 (depends on 1) Apparatus according to claim 1, wherein the first electrical load and the second electrical load each comprise a reactive load. ### Claim 8 Apparatus according to claim wherein the first resonant frequency comprises a frequency within the first frequency range, and the second first resonant frequency comprises a frequency within the second frequency range. ### Claim 9 (depends on 1) Apparatus according to claim 1, comprising: a first electrical interface; a second electrical interface; a third frequency selective component adapted to selectively pass signals in the first frequency range between the antenna and the first electrical interface; and a fourth frequency selective component adapted to selectively pass signals in the second frequency range between the antenna and the second electrical interface. ### Claim 10 (depends on 9) Apparatus according to claim 9, comprising a first signal processing component electrically connected to the antenna via the first electrical interface and a second signal processing component electrically connected to the antenna via the second electrical interface. ### Claim 11 (depends on 10) Apparatus according to claim 10, wherein each of the signal processing components comprises one or more of: a transmitter, a receiver, and a transceiver. ### Claim 12 (depends on 10) Apparatus according to claim 10, wherein the first signal processing component is adapted to transmit and/or receive first signals in the first frequency range via the antenna and the second signal processing component is adapted to transmit and/or receive second signals in the second frequency range via the antenna. ### Claim 13 (depends on 10) Apparatus according to claim 10, wherein the first signal processing component and the second signal processing component are capable of transmitting and/or receiving signals via the antenna simultaneously. ### Claim 14 (depends on 9) Apparatus according to claim 9, wherein the first frequency selective component and the fourth frequency selective component comprise a first duplex filter and the second frequency selective component and the third frequency selective component comprise a second duplex filter. ### Claim 15 (depends on 9) Apparatus according to claim 9, wherein the first frequency selective component and the second frequency selective component comprise a first duplex filter and the third frequency selective component and the fourth frequency selective component comprise a second duplex filter. ### Claim 16 (depends on 1) Apparatus according to claim 1, comprising: a third electrical load; and a further frequency selective component, wherein the third electrical load and the further frequency selective component are adapted to tune the antenna to a third resonant frequency with respect to a third frequency range, and wherein the first electrical load, the second electrical load, the third electrical load, the first frequency selective component, the second frequency selective component and the further frequency selective component are adapted to tune the antenna to operate simultaneously at at least the first resonant frequency, the second resonant frequency and the third resonant frequency. ### Claim 17 (depends on 16) Apparatus according to claim 16, wherein the further frequency selective component is adapted to selectively pass signals in the third frequency range between the antenna and the third electrical load. ### Claim 18 Apparatus according to claim herein the apparatus comprises a chipset. ### Claim 19 A method of operating a user equipment antenna, the method comprising: tuning the antenna to a first resonant frequency with respect to signals in a first frequency range using a first electrical load and a first frequency selective component; and tuning the antenna to a second resonant frequency with respect to signals in a second frequency range using a second electrical load and a second frequency selective component, wherein the antenna is tuned to operate simultaneously at at least the first resonant frequency and the second resonant frequency using the first electrical load, the second electrical load, the first frequency selective component and the second frequency selective component. ### Claim 20 (depends on 19) A computer program product comprising a non-transitory computer-readable storage medium having computer readable instructions stored thereon, the computer readable instructions being executable by a computerized device to cause the computerized device to perform a method of tuning a user equipment antenna according to claim 19.