# US 2019/0356359 A1 · Reconfigurable antenna multiple access for millimeter wave systems > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0356359 A1 - Document ID: US20190356359A1 - Status: Published application - Kind: A1 - Application number: 16/209,350 - Filed: 2018-12-04 - Published: 2019-11-21 - Earliest claimed: 2018-05-21 - Assignees: Boise State University - Applicants: Boise State University - Inventors: Mojtaba Ahmadi Almasi; Hani Mehrpouyan - Web page: https://patentgrep.com/patent/US20190356359A1 ## CPC - H01Q 25/008: {lens fed multibeam arrays} - H04B 7/024: Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems - H01Q 1/241: {used in mobile communications, e.g. GSM (H01Q1/247, H01Q1/248 take precedence)} - H01Q 1/36: Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) - H01Q 15/08: formed of solid dielectric material - H04B 7/06952: {Selecting one or more beams from a plurality of beams, e.g. beam training, management or sweeping} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H04B: TRANSMISSION ## Abstract A system may include a radio frequency chain configured to process a signal. The system may further include a reconfigurable antenna including multiple antenna feeds, each of the antenna feeds associated with a beam direction. The system may also include a beam selection network configured to couple the radio frequency chain to a first antenna feed of the multiple antenna feeds to generate a first beam in a first direction, and simultaneously couple the radio frequency chain to a second antenna feed of the multiple antenna feeds to generate a second beam in a second direction. ## Claims ### Claim 1 A system comprising: a radio frequency chain configured to process a signal; a reconfigurable antenna including multiple antenna feeds, each of the antenna feeds associated with a beam direction; and a beam selection network configured to couple the radio frequency chain to a first antenna feed of the multiple antenna feeds to generate a first beam in a first direction, and simultaneously couple the radio frequency chain to a second antenna feed of the multiple antenna feeds to generate a second beam in a second direction. ### Claim 2 (depends on 1) The system of claim 1, wherein the multiple antenna feeds are tapered slot antenna feeds, the system further comprising: a spherical dielectric lens coupled to the tapered slot antenna feeds. ### Claim 3 (depends on 1) The system of claim 1, wherein the reconfigurable antenna includes a plurality of active antenna elements and a plurality of passive antenna elements. ### Claim 4 (depends on 1) The system of claim 1, wherein each antenna feed of the multiple antenna feeds is independently controllable to modify a phase of the signal received at the antenna feed. ### Claim 5 (depends on 1) The system of claim 1, further comprising: a phase detector configured to determine a phase difference between the signal and a second signal. ### Claim 6 (depends on 1) The system of claim 1, further comprising: a processing circuit configured to allocate a first power level to the first beam and to allocate a second power level to the second beam. ### Claim 7 (depends on 1) The system of claim 1, wherein the radio frequency chain is configured to down-convert the signal when the signal is received from a remote device, or up-convert the signal when the signal is to be sent to the remote device. ### Claim 8 (depends on 1) The system of claim 1, wherein the beam selection network is further configured to couple the radio frequency chain to at least one additional antenna feed of the multiple antenna feeds to generate at least one additional beam in an additional direction. ### Claim 9 A method comprising: processing a signal at a first radio frequency chain; and routing a first signal component between the first radio frequency chain and a first antenna feed of a first reconfigurable antenna to generate a first beam in a first direction, and simultaneously routing the first signal component between the first radio frequency chain and a second antenna feed of the first reconfigurable antenna to generate a second beam in a second direction. ### Claim 10 (depends on 9) The method of claim 9, further comprising: at a first time allocation, transmitting or receiving the first signal component via the first reconfigurable antenna and transmitting or receiving a second signal component via a second reconfigurable antenna; and at a second time allocation, transmitting or receiving the second signal component via the first reconfigurable antenna and transmitting or receiving the first signal component via the second reconfigurable antenna. ### Claim 11 (depends on 10) The method of claim 10, wherein the first signal component is a first component of a multiple-input-multiple-output (MIMO) signal, and the second signal component is a second component of the MIMO signal, the method further comprising: performing point-to-point communication with a remote device via the MIMO signal. ### Claim 12 (depends on 11) The method of claim 11, further comprising: applying a rate-one complex-valued space-time block coding to the MIMO signal. ### Claim 13 (depends on 9) The method of claim 9, further comprising: determining a phase difference between the first signal component and a second signal component; and shifting a phase of the first signal component at the second antenna feed to regenerate the second signal component. ### Claim 14 (depends on 13) The method of claim 13, wherein the first signal component includes a communication for a first remote device, and wherein the second signal component includes communication for a second remote device. ### Claim 15 (depends on 9) The method of claim 9, further comprising: allocating a first power level to the first beam; and allocating a second power level to the second beam. ### Claim 16 (depends on 9) The method of claim 9, wherein processing the signal includes down-converting the signal when the signal is received from a remote device, or up-converting the signal when the signal is to be sent to remote device. ### Claim 17 (depends on 9) The method of claim 9, further comprising: routing the signal between the radio frequency chain and at least one additional antenna feed to generate an additional beam in an additional direction. ### Claim 18 A method comprising: processing a first signal at a radio frequency chain to generate a first modulated signal; routing the first modulated signal from the radio frequency chain to a first antenna feed of a reconfigurable antenna to generate a first beam in a first direction, while simultaneously routing the first modulated signal from the radio frequency chain to a second antenna feed of the reconfigurable antenna to generate a second beam in a second direction; determining a phase difference between the first signal and a second signal; and shifting a phase of the first modulated signal at the second antenna feed to generate a second modulate signal corresponding to the second signal, wherein the first modulated signal is transmitted via the first beam and the second modulated signal is transmitted via the second beam. ### Claim 19 (depends on 18) The method of claim 18, wherein the first signal includes a communication for a first remote device, and wherein the second signal includes communication for a second remote device. ### Claim 20 (depends on 18) The method of claim 18, further comprising: allocating a first power level to the first beam; and allocating a second power level to the second beam.