Title :
A Fully Integrated Wideband FM Transceiver for Low Data Rate Autonomous Systems
Author :
Saputra, Nitz ; Long, John R.
Author_Institution :
Electron. Res. Lab./DIMES, Delft Univ. of Technol., Delft, Netherlands
Abstract :
A frequency-agile FM-UWB transceiver (Tx/Rx) with full on-chip calibration aimed at low data rate autonomous wireless sensing applications is described. The subcarrier VCO, 3-phase CCO, and frequency-tripling PA in the transmit path produce a wideband, double-FM output at -10.1 dBm-pk (FCC compliant). A tunable LNA, envelope detector, limiter, and FSK demodulator comprise the receiver. Digitally programmable matching networks at the PA output and LNA input facilitate independent tuning of Tx and Rx across the 3-5 GHz band. An on-chip SAR-FLL controlling 5 DACs (3 I-DACs and 2 C-DACs) performs a full Tx/Rx calibration in less than 2 ms. Designed for continuous operation at 100 kb/s, measured Rx sensitivity is -80.5 dBm (10 -3 BER), and average Tx/Rx energy efficiency is 6 nJ/bit. Total dissipation for the 0.9 mm 2 IC implemented in 90 nm RF-CMOS is 630 μW in Tx and 580 μW in Rx mode from a 1 V supply.
Keywords :
CMOS integrated circuits; calibration; demodulators; low noise amplifiers; microwave limiters; microwave oscillators; microwave power amplifiers; radio transceivers; ultra wideband communication; voltage-controlled oscillators; 3-phase CCO; FSK demodulator; RF-CMOS; digitally programmable matching networks; envelope detector; frequency 3 GHz to 5 GHz; frequency-agile FM-UWB transceiver; frequency-tripling PA; full on-chip calibration; limiter; low data rate autonomous wireless sensing applications; on-chip SAR-FLL; power 580 muW; power 630 muW; size 90 nm; subcarrier VCO; transmit path; tunable LNA; voltage 1 V; wideband double-FM output; Capacitors; Frequency shift keying; Oscillators; Radio frequency; Receivers; Transceivers; Autonomous wireless systems; FM-UWB; RF-CMOS; SAR-FLL; bias current reuse; current-controlled oscillator; digital calibration; frequency tripling PA; low-power RF transceiver; programmable RF matching; regenerative RF amplifier; ultra-wideband;
Journal_Title :
Solid-State Circuits, IEEE Journal of
DOI :
10.1109/JSSC.2015.2399451
