# US 10,374,293 B2 · Duplexed phased array antennas > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,374,293 B2 - Document ID: US10374293B2 - Status: Granted - Kind: B2 - Application number: 15/901,971 - Filed: 2018-02-22 - Published: 2018-07-26 - Granted: 2019-08-06 - Earliest claimed: 2015-12-29 - Assignees: CommScope Technologies LLC - Applicants: CommScope Technologies LLC - Inventors: Sammit Patel; Morgan C. Kurk; XiaoHua Hou; Giuseppe Resnati - Web page: https://patentgrep.com/patent/US10374293B2 ## CPC - H01Q 1/246: {specially adapted for base stations} - H01Q 3/36: with variable phase-shifters - H01Q 3/40: with phasing matrix - H01Q 5/42: using two or more imbricated arrays (H01Q5/49 takes precedence) - H01Q 21/28: Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract Multi-band antennas include one or more duplexers configured to provide isolation of non-linearities generated along a downlink path of RF signals transmitted from the multi-band antenna from an uplink path of RF signals received by the multi-band antenna. ## Claims ### Claim 1 A base station antenna comprising: a first radio frequency (“RF”) input port that is configured to be coupled to a base station radio; a plurality of sub-arrays of radiating elements, each sub-array including at least one radiating element; at least one transmit phase shifter coupled between the first RF input port and the plurality of sub-arrays of radiating elements; at least one receive phase shifter coupled between the first RF input port and the plurality of sub-arrays of radiating elements, wherein the at least one receive phase shifter comprises at least one solid state phase shifter. ### Claim 2 (depends on 1) The base station antenna of claim 1, further comprising: a first duplexer having a first port that is coupled to the first RF input port, a second port that is coupled to the at least one transmit phase shifter and a third port that is coupled to the at least one receive phase shifter; and a second duplexer having a first port that is coupled to a first of the sub-arrays of radiating elements, a second port that is coupled to the at least one transmit phase shifter and a third port that is coupled to the at least one receive phase shifter. ### Claim 3 (depends on 2) The base station antenna of claim 2, further comprising a low noise amplifier between the receive phase shifter and the first duplexer. ### Claim 4 (depends on 2) The base station antenna of claim 2, further comprising: a first splitter that is coupled between the first duplexer and the at least one transmit phase shifter; and a first combiner that is coupled between the first duplexer and the at least one receive phase shifter. ### Claim 5 (depends on 2) The base station antenna of claim 2, further comprising a plurality of additional second duplexers, each of the additional second duplexers having a first port that is coupled to a respective one of the sub-arrays of radiating elements, a second port that is coupled to the at least one transmit phase shifter and a third port that is coupled to the at least one receive phase shifter. ### Claim 6 (depends on 1) The base station antenna of claim 1, wherein the at least one transmit phase shifter comprises at least one solid state phase shifter. ### Claim 7 (depends on 1) The antenna of claim 1, wherein the first RF input port is configured to pass both transmit band and receive band RF signals. ### Claim 8 An antenna comprising: a radio frequency (“RF”) input port; a transmit phase shifter; a receive phase shifter; a radiating element; a first circuit element having a first port coupled to the transmit phase shifter, a second port coupled to the receive phase shifter and a third port coupled to the RF input port; and a second circuit element having a first port coupled to the transmit phase shifter, a second port coupled to the receive phase shifter and a third port coupled to the radiating element, wherein a common, transmission path that connects the third port of the first circuit element to the first RF input port is configured to pass both transmit and receive RF signals. ### Claim 9 (depends on 8) The antenna of claim 8, wherein the first circuit element is a first duplexer and the second circuit element is a second duplexer. ### Claim 10 (depends on 8) The antenna of claim 8, wherein the receive phase shifter is a solid state phase shifter. ### Claim 11 (depends on 8) The antenna of claim 8, further comprising a low noise amplifier between the receive phase shifter and the first circuit element. ### Claim 12 (depends on 8) The antenna of claim 8, further comprising: a first splitter that is coupled between the first circuit element and the transmit phase shifter; and a first combiner that is coupled between the first circuit element and the receive phase shifter. ### Claim 13 (depends on 8) The antenna of claim 8, wherein the second circuit element comprises one of a plurality of second circuit elements, and wherein the radiating element comprises one of a plurality of radiating elements, wherein each second circuit element has a first port coupled to the transmit phase shifter, a second port coupled to the receive phase shifter and a third port coupled to a respective one of the radiating elements. ### Claim 14 An antenna comprising: a first duplexer having a first transmit port, a first receive port and a first combined port that is coupled to a first radio frequency (“RF”) input of the antenna; a second duplexer having a second transmit port, a second receive port and a second combined port that is coupled to a second RF input of the antenna; a plurality of sub-arrays of radiating elements that each include at least one radiating element; a plurality of multi-band duplexers, wherein each multi-band duplexer is coupled between a respective one of the sub-arrays of radiating elements and each of the first transmit port, the first receive port, the second transmit port, and the second receive port. ### Claim 15 (depends on 14) The antenna of claim 14, further comprising: at least one transmit phase shifter coupled between the first duplexer and a first of the multi-band duplexers; and at least one receive phase shifter coupled between the first duplexer and the first of the multi-band duplexers. ### Claim 16 (depends on 15) The antenna of claim 15, further comprising: a first splitter that is coupled between the first duplexer and the at least one transmit phase shifter; and a first combiner that is coupled between the first duplexer and the at least one receive phase shifter. ### Claim 17 (depends on 16) The antenna of claim 16, further comprising a low noise amplifier between the first combiner and the first duplexer. ### Claim 18 (depends on 15) The antenna of claim 15, wherein the at least one receive phase shifter comprises at least one solid state phase shifter. ### Claim 19 (depends on 14) The antenna of claim 14, further comprising: at least one transmit phase shifter coupled between the second duplexer and a second of the multi-band duplexers; and at least one receive phase shifter coupled between the second duplexer and the second of the multi-band duplexers.