Print Email Facebook Twitter A Highly Selective Receiver With Programmable Zeros and Second-Order TIA Title A Highly Selective Receiver With Programmable Zeros and Second-Order TIA Author Montazerolghaem, M.A. (TU Delft Electronics) de Vreede, L.C.N. (TU Delft Electronics) Babaie, M. (TU Delft Electronics) Date 2023 Abstract This article presents a wideband blocker tolerant receiver (RX) for fifth-generation (5G) user equipment applications. Two programmable zeros around the channel bandwidth are introduced to sufficiently suppress the close-in blockers of 5G applications. Since the effect of zeros gradually diminishes at larger out-of-band offset frequencies, an auxiliary current-sinking path is also introduced to reduce the RX input impedance at far-out offset frequencies. Moreover, a simple second-order transimpedance amplifier (TIA) is adopted to enhance the proposed RX selectivity. The utilized TIA synthesizes two complex conjugate poles to achieve a flat gain response and -40 dB/dec roll-off. A 40-nm CMOS RX prototype occupies 1.15mm2 and consumes 84-140mW from a 1.3-V supply voltage over the 0.5-3-GHz operating frequency range. The RX achieves a 160-MHz RF bandwidth, 2.6-4.2-dB noise figure, a -0.3-dBm blocker 1-dB compression point (B1dB), and an out-of-band third-order intercept point (IIP3) of 22.5 dBm. As a test case, using the 3GPP standard, a -15-dBm continuous wave (CW) close-in out-of-band blocker located at 85-MHz offset from the passband edges is applied to the RX. Thanks to the receiver's high selectivity, the RX achieves 100% throughput while detecting 100-MS/s quadrature phase shift keying (QPSK) signal with 16 dB higher power than the reference sensitivity. Subject 5G mobile communicationCurrent-mode receiverfifth-generation (5G) user equipment applicationsFilteringImpedanceLinearityMixersN-path filtersNotch filtersout-of-band linearityprogrammable zerosRadio frequencysecond-order transimpedance amplifier (TIA)surface acoustic wave (SAW)-less receiver To reference this document use: http://resolver.tudelft.nl/uuid:c78a2a7f-fbfe-4fff-83bd-f11fc5e8e269 DOI https://doi.org/10.1109/JSSC.2023.3335921 Embargo date 2024-07-01 ISSN 0018-9200 Source IEEE Journal of Solid State Circuits, 59 (6), 1668-1683 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-care Otherwise 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. Part of collection Institutional Repository Document type journal article Rights © 2023 M.A. Montazerolghaem, L.C.N. de Vreede, M. Babaie Files file embargo until 2024-07-01