A Six-Phase Two-Stage Blocker-Tolerant Harmonic-Rejection Receiver

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2020-05
Major/Subject
Mcode
Degree programme
Language
en
Pages
13
1964-1976
Series
IEEE Transactions on Microwave Theory and Techniques, Volume 68, issue 5
Abstract
Modern wideband receivers need to operate linearly in the presence of strong out-of-band blockers. In this article, we introduce a blocker-tolerant harmonic rejection (HR) receiver, which can suppress blockers at the local oscillator harmonics. The suppression is achieved by applying the HR in two stages, such that the first HR already occurs at the first gain-stage output. The proposed receiver achieves this HR with a simple six-phase local-oscillator (LO) clocking. The proposed design also uses simple gain coefficients of ±1 while implementing HR in two stages that compensates for the mismatch effects of each stage. In addition, the near-band blocker linearity is improved by implementing a third-order baseband feedback response, which acts in conjunction with the N -path filtering. Implemented in a 28-nm Fully-Depleted Silicon-on-Insulator (FDSOI) process, the receiver demonstrates the 18-37-dB HR from the first stage and 46-53 dB of HR in total. Furthermore, a blocker compression point (BCP) of 2.5 dBm fora third harmonic blocker and a near-band BCP of -6.5 dBm are achieved.
Description
| openaire: EC/H2020/704947/EU//ADVANTAG5
Keywords
Blocker resilience, Direct downconversion receivers, Harmonic rejection (HR), N-path filtering
Other note
Citation
Ul Haq , F , Englund , M , Antonov , Y , Tenhunen , M , Stadius , K , Kosunen , M , Ostman , K B , Koli , K & Ryynänen , J 2020 , ' A Six-Phase Two-Stage Blocker-Tolerant Harmonic-Rejection Receiver ' , IEEE Transactions on Microwave Theory and Techniques , vol. 68 , no. 5 , 8994180 , pp. 1964-1976 . https://doi.org/10.1109/TMTT.2020.2966152