Abstract
Recent sub-6GHz receivers (RXs) attempted to realize RF channel selection at the RX input for suppressing large close-in blockers. Although mixer-first RXs can achieve sharp RF filtering and good out-of-band (OOB) linearity, they suffer from large noise figure (NF) and high LO leakage [1] [2]. Alternatively, [3]–[5] exploited an N-path notch filter around an LNTA to simultaneously achieve low NF and a moderate channel selection at the RX input. However, their OOB IIP3 and blocker 1dB compression point (B1dS) are at least 10dB worse than the mixer-first RXs. This paper proposes an LNTA-based RX that shows a similar OOB linearity as prior art mixer-first RXs without sacrificing NF. This is achieved by (1) adding a parallel preselect filter at the RX input to improve the RF selectivity and achieve +6dBm B1dB; (2) proposing third-order RF and baseband filters to attenuate close-in blockers by a 120dB/dec roll-off; (3) introducing a feedback network to reduce the in-band (IB) gain fluctuations to <0.5dB.
Original language | English |
---|---|
Title of host publication | 2022 IEEE Custom Integrated Circuits Conference (CICC) |
Subtitle of host publication | Proceedings |
Place of Publication | Piscataway |
Publisher | IEEE |
Number of pages | 2 |
ISBN (Electronic) | 978-1-6654-0756-4 |
ISBN (Print) | 978-1-7281-8280-3 |
DOIs | |
Publication status | Published - 2022 |
Event | 2022 IEEE Custom Integrated Circuits Conference (CICC) - Hybrid Conference at Newport Beach, United States Duration: 24 Apr 2022 → 27 Apr 2022 |
Conference
Conference | 2022 IEEE Custom Integrated Circuits Conference (CICC) |
---|---|
Abbreviated title | CICC 2022 |
Country/Territory | United States |
City | Hybrid Conference at Newport Beach |
Period | 24/04/22 → 27/04/22 |
Bibliographical note
Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-careOtherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.