# US 2020/0403296 A1 · Antenna arrangement with wave trap and user equipment > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2020/0403296 A1 - Document ID: US20200403296A1 - Status: Published application - Kind: A1 - Application number: 16/979,267 - Filed: 2018-04-05 - Published: 2020-12-24 - Earliest claimed: 2018-04-05 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Janne ILVONEN; Ruiyuan TIAN; Changnian XU; Li DONG - Web page: https://patentgrep.com/patent/US20200403296A1 ## CPC - H01Q 1/243: {with built-in antennas} - H01Q 1/44: using equipment having another main function to serve additionally as an antenna {, e.g. means for giving an antenna an aesthetic aspect}(H01Q1/27 - H01Q1/34 take precedence) - H01Q 1/521: {reducing the coupling between adjacent antennas} - H01Q 5/314: using frequency dependent circuits or components, e.g. trap circuits or capacitors - H01Q 5/321: within a radiating element or between connected radiating elements - H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength - H04B 1/0064: {with separate antennas for the more than one band (H04B1/0053 takes precedence)} - H04B 1/3833: {Hand-held transceivers} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H04B: TRANSMISSION ## Abstract An antenna arrangement for a user equipment is disclosed. The antenna arrangement comprises a first antenna element configured to operate at frequencies above a limit frequency, a second antenna element configured to operate at frequencies below the limit frequency, and a wave trap configured to resonate within a frequency band above the limit frequency. The wave trap is connected to the second antenna element. ## Claims ### Claim 1 An antenna arrangement for a user equipment, the antenna arrangement comprising: a first antenna element configured to operate at frequencies above a limit frequency, a second antenna element configured to operate at frequencies below the limit frequency, and a wave trap configured to resonate within a frequency band above the limit frequency, wherein one end of the wave trap is connected to the second antenna element, and the other end of the wave trap is an open end. ### Claim 2 (depends on 1) The antenna arrangement according to claim 1, wherein the wave trap is galvanically connected to the second antenna element. ### Claim 3 (depends on 1) The antenna arrangement according to claim 1, wherein the wave trap is connected to the second antenna element via a capacitive coupling and/or inductive coupling. ### Claim 4 (depends on 1) The antenna arrangement according to claim 1, wherein an open end of the first antenna element is directed towards an open end of the second antenna element. ### Claim 5 (depends on 4) The antenna arrangement according to claim 4, wherein the open end of the first antenna is arranged adjacent to the open end of the second antenna element. ### Claim 6 (depends on 4) The antenna arrangement according to claim 4, wherein the open end of the wave trap is directed towards the open end of the first antenna element. ### Claim 7 (depends on 1) The antenna arrangement according to claim 1, wherein the limit frequency is a frequency within a range of 800 MHz-1.2 GHz. ### Claim 8 (depends on 1) The antenna arrangement according to claim 1, further comprising a ground plane, wherein the first and second antenna elements are connected to the ground plane. ### Claim 9 (depends on 1) The antenna arrangement according to claim 1, wherein the wave trap comprises a stub. ### Claim 10 (depends on 9) The antenna arrangement according to claim 9, wherein the first antenna element is configured to operate at least at a first wavelength, and wherein the stub has a length of a fraction of the first wavelength. ### Claim 11 (depends on 9) The antenna arrangement according to claim 9, wherein the first antenna element is configured to operate at least at a first wavelength, and wherein the stub has a length of a quarter of the first wavelength, or of half the first wavelength. ### Claim 12 (depends on 1) The antenna arrangement according to claim 1, further comprising a second wave trap. ### Claim 13 (depends on 12) The antenna arrangement according to claim 12, wherein the second wave trap is connected to the second antenna element. ### Claim 14 (depends on 1) The antenna arrangement according to claim 1, further comprising a third antenna element configured to operate at frequencies above the limit frequency. ### Claim 15 A user equipment comprising a housing, and a first transceiver circuitry and a second transceiver circuitry arranged inside the housing, wherein the first transceiver circuitry is configured to handle a first frequency band above a limit frequency and the second transceiver circuitry is configured to handle a second frequency band below the limit frequency, and wherein the user equipment comprises an antenna arrangement wherein the antenna arrangement comprises: a first antenna element configured to operate at frequencies above the limit frequency, a second antenna element configured to operate at frequencies below the limit frequency, and a wave trap configured to resonate within a frequency band above the limit frequency, wherein one end of the wave trap is connected to the second antenna element, and the other end of the wave trap is an open end. ### Claim 16 (depends on 15) The user equipment according to claim 15, wherein the housing comprises a conductive peripheral structure, and wherein the first and second antenna elements form part of the conductive peripheral structure. ### Claim 17 (depends on 16) The user equipment according to claim 16, further comprising a third antenna element configured to operate at frequencies above the limit frequency, wherein the third antenna element forms part of the conductive peripheral structure. ### Claim 18 (depends on 1) The antenna arrangement according to claim 1, wherein the open end of the wave trap is directed towards an open end of the first antenna element; the open end of the wave trap is arranged in line with an open end of the second antenna element; and the open end of the first antenna element faces the open end of the second antenna element. ### Claim 19 (depends on 1) The antenna arrangement according to claim 1, wherein a length of the wave trap extends in a direction from the open end of the wave trap; and a length of the second antenna element extends in the direction from an open end of the second antenna such that the length of the second antenna extends in parallel with the length of the wave trap. ### Claim 20 (depends on 1) The antenna arrangement according to claim 1, wherein each of the first and second antenna elements is formed by an inverted-F antenna.