Improved Out-of-Band Rejection in Reflection-Mode N-Path Filters Using Tunable Transmission Zeros
Recent topologies for widely tunable and digitally reconfigurable filters, which can replace banks of fixed-frequency filters, have relied on N-path passive mixers. Such circuits are able to provide flexibility in filter center frequency while achieving programmable bandwidths. To address future com...
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| Veröffentlicht in: | IEEE transactions on microwave theory and techniques 2024-11, Vol.72 (11), p.6375-6386 |
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| container_title | IEEE transactions on microwave theory and techniques |
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| creator | Ellington, Cody J. Hari, Sandeep Floyd, Brian A. |
| description | Recent topologies for widely tunable and digitally reconfigurable filters, which can replace banks of fixed-frequency filters, have relied on N-path passive mixers. Such circuits are able to provide flexibility in filter center frequency while achieving programmable bandwidths. To address future communication needs, a wideband reflection-mode N-path filter (RMNF) is presented that tunes across 6-31 GHz but operates more optimally across 6-18 GHz. Prior RMNF work suffered from limited out-of-band rejection (OOBR) of unwanted signals. In this work, a technique to improve the OOBR and achieve a tunable out-of-band (OOB) transmission zero is demonstrated. The RMNF is fabricated in the GlobalFoundaries 45-nm RF-SOI process, and across its 6-18-GHz performance range, it achieves 152-220 mW of power consumption, 7.3-12-dB noise figure, and −6.9 to −5.7-dBm input-referred compression point. |
| doi_str_mv | 10.1109/TMTT.2024.3395060 |
| format | Article |
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Such circuits are able to provide flexibility in filter center frequency while achieving programmable bandwidths. To address future communication needs, a wideband reflection-mode N-path filter (RMNF) is presented that tunes across 6-31 GHz but operates more optimally across 6-18 GHz. Prior RMNF work suffered from limited out-of-band rejection (OOBR) of unwanted signals. In this work, a technique to improve the OOBR and achieve a tunable out-of-band (OOB) transmission zero is demonstrated. The RMNF is fabricated in the GlobalFoundaries 45-nm RF-SOI process, and across its 6-18-GHz performance range, it achieves 152-220 mW of power consumption, 7.3-12-dB noise figure, and −6.9 to −5.7-dBm input-referred compression point.</description><identifier>ISSN: 0018-9480</identifier><identifier>EISSN: 1557-9670</identifier><identifier>DOI: 10.1109/TMTT.2024.3395060</identifier><identifier>CODEN: IETMAB</identifier><language>eng</language><publisher>New York: IEEE</publisher><subject>Bandpass ; Bandwidth ; broadband hybrid coupler ; Couplers ; enhanced out-of-band rejection (OOBR) ; filter ; Filtering theory ; Frequency filters ; Mixers ; N-path ; Noise levels ; passive mixer ; programmable ; reconfigurable ; Reflection ; reflection-mode ; Rejection ; Switches ; Topology ; Trajectory ; tunable transmission zero ; widely tunable</subject><ispartof>IEEE transactions on microwave theory and techniques, 2024-11, Vol.72 (11), p.6375-6386</ispartof><rights>Copyright The Institute of Electrical and Electronics Engineers, Inc. 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Such circuits are able to provide flexibility in filter center frequency while achieving programmable bandwidths. To address future communication needs, a wideband reflection-mode N-path filter (RMNF) is presented that tunes across 6-31 GHz but operates more optimally across 6-18 GHz. Prior RMNF work suffered from limited out-of-band rejection (OOBR) of unwanted signals. In this work, a technique to improve the OOBR and achieve a tunable out-of-band (OOB) transmission zero is demonstrated. The RMNF is fabricated in the GlobalFoundaries 45-nm RF-SOI process, and across its 6-18-GHz performance range, it achieves 152-220 mW of power consumption, 7.3-12-dB noise figure, and −6.9 to −5.7-dBm input-referred compression point.</description><subject>Bandpass</subject><subject>Bandwidth</subject><subject>broadband hybrid coupler</subject><subject>Couplers</subject><subject>enhanced out-of-band rejection (OOBR)</subject><subject>filter</subject><subject>Filtering theory</subject><subject>Frequency filters</subject><subject>Mixers</subject><subject>N-path</subject><subject>Noise levels</subject><subject>passive mixer</subject><subject>programmable</subject><subject>reconfigurable</subject><subject>Reflection</subject><subject>reflection-mode</subject><subject>Rejection</subject><subject>Switches</subject><subject>Topology</subject><subject>Trajectory</subject><subject>tunable transmission zero</subject><subject>widely tunable</subject><issn>0018-9480</issn><issn>1557-9670</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2024</creationdate><recordtype>article</recordtype><sourceid>RIE</sourceid><recordid>eNpNkF9LwzAUxYMoOKcfQPAh4HPmTdIkzaOK08HmRLoXX0LaptrRtTNpBb-9KduDT5fD_Z375yB0TWFGKei7bJVlMwYsmXGuBUg4QRMqhCJaKjhFEwCaEp2kcI4uQthGmQhIJ8gudnvf_bgSr4eedBV5sG2J393WFX3dtbhuo6iagyKrrnT4lbzZ_gvP66Z3PuBNqNtPnA2tzRuHM2_bsKtDGM0fznfhEp1Vtgnu6linaDN_yh5fyHL9vHi8X5KCJbInmmslNZRWpExJUUgLTEMOSvBc51IKm_BcAWWlFrEPgpY0ApCmtoxkxafo9jA3_vM9uNCbbTf4Nq40nDIJqVSMR4oeqCKeFryrzN7XO-t_DQUzJmnGJM2YpDkmGT03B0_tnPvHC06VYPwPTRFtfg</recordid><startdate>20241101</startdate><enddate>20241101</enddate><creator>Ellington, Cody J.</creator><creator>Hari, Sandeep</creator><creator>Floyd, Brian A.</creator><general>IEEE</general><general>The Institute of Electrical and Electronics Engineers, Inc. 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Such circuits are able to provide flexibility in filter center frequency while achieving programmable bandwidths. To address future communication needs, a wideband reflection-mode N-path filter (RMNF) is presented that tunes across 6-31 GHz but operates more optimally across 6-18 GHz. Prior RMNF work suffered from limited out-of-band rejection (OOBR) of unwanted signals. In this work, a technique to improve the OOBR and achieve a tunable out-of-band (OOB) transmission zero is demonstrated. The RMNF is fabricated in the GlobalFoundaries 45-nm RF-SOI process, and across its 6-18-GHz performance range, it achieves 152-220 mW of power consumption, 7.3-12-dB noise figure, and −6.9 to −5.7-dBm input-referred compression point.</abstract><cop>New York</cop><pub>IEEE</pub><doi>10.1109/TMTT.2024.3395060</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-1124-2764</orcidid><orcidid>https://orcid.org/0000-0002-0756-4568</orcidid><orcidid>https://orcid.org/0000-0003-4120-8521</orcidid></addata></record> |
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| ispartof | IEEE transactions on microwave theory and techniques, 2024-11, Vol.72 (11), p.6375-6386 |
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| subjects | Bandpass Bandwidth broadband hybrid coupler Couplers enhanced out-of-band rejection (OOBR) filter Filtering theory Frequency filters Mixers N-path Noise levels passive mixer programmable reconfigurable Reflection reflection-mode Rejection Switches Topology Trajectory tunable transmission zero widely tunable |
| title | Improved Out-of-Band Rejection in Reflection-Mode N-Path Filters Using Tunable Transmission Zeros |
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