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A Single-pin antenna interface rf front end using a single-mos dco-pa and a push-pull lna
Xu,Kai1; Yin,Jun2; Mak,Pui In2; Staszewski,Robert Bogdan1; Martins,Rui P.2
Source PublicationIEEE Journal of Solid-State Circuits

We propose a simple power-efficient sub-1-V fully integrated RF front end (RFE) for 2.4-GHz transceivers. It introduces the following innovations. First, a function-reuse single-MOS digitally controlled oscillator power amplifier (DCO-PA) with full supply utilization improves antenna-To-DCO isolation for better resilience to jammers. Second, a noninverting transmitter (TX) matching transformer with a zero-shifting capacitor suppresses the second-harmonic emission of the DCO-PA and allows a single-pin antenna interface for both TX and receiver (RX) modes eliminating the transmit/receive (T/R) switches in the signal path. Third, a push-pull low-noise amplifier (LNA) reuses the TX matching transformer for passive gain boosting that reduces power consumption. Fabricated in 65-nm CMOS, the RFE occupies merely 0.17 mm2. Through the functional merge of the oscillator and PA, it can transmit 0 dBm at RF, featuring 10.2% power efficiency when delivering the RF power as low as-10 dBm at a 0.3-V supply. Under a 0.5-V supply, the LNA shows 11-dB gain and 6.8-dB noise figure (NF) while consuming 174 mu W.

KeywordDigitally Controlled Oscillator (Dco) Function Reuse Harmonic Suppression Low-noise Amplifier (Lna) Power Amplifier (Pa) Rf Front End (Rfe) Transformer Transmit/ Receive (T/r) Switch
URLView the original
Indexed BySCIE
WOS Research AreaEngineering
WOS SubjectEngineering, Electrical & Electronic
WOS IDWOS:000552195700004
Scopus ID2-s2.0-85090238756
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Cited Times [WOS]:4   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
Faculty of Science and Technology
Corresponding AuthorYin,Jun
Affiliation1.School of Electrical and Electronic Engineering,University College Dublin,Dublin,Ireland
2.State-Key Laboratory of Analog and Mixed-Signal Vlsi and FST-ECE,University of Macau,Macao
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Xu,Kai,Yin,Jun,Mak,Pui In,et al. A Single-pin antenna interface rf front end using a single-mos dco-pa and a push-pull lna[J]. IEEE Journal of Solid-State Circuits,2020,55(8):2055-2068.
APA Xu,Kai,Yin,Jun,Mak,Pui In,Staszewski,Robert Bogdan,&Martins,Rui P..(2020).A Single-pin antenna interface rf front end using a single-mos dco-pa and a push-pull lna.IEEE Journal of Solid-State Circuits,55(8),2055-2068.
MLA Xu,Kai,et al."A Single-pin antenna interface rf front end using a single-mos dco-pa and a push-pull lna".IEEE Journal of Solid-State Circuits 55.8(2020):2055-2068.
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