A fully integrated transformer-based front-end architecture for wireless transceivers

Charge-Based Capacitance Measurement (CBCM) technique is a simple but effective technique for measuring capacitance values down to the attofarad level. However, when adopted for fully on-chip implementation, this technique suffers output offset caused by mismatches and process variations. This paper introduces a novel method that compensates the offset of a fully integrated differential CBCM electronic front-end. After a detailed theoretical analysis of the differential CBCM topology, we present and discuss a modified architecture that compensates mismatches and increases robustness against mismatches and process variations. The proposed circuit has been simulated using a standard 130-nm technology and shows a sensitivity of 1.3 mV/aF and a 20× reduction of the standard deviation of the differential output voltage as compared to the traditional solution.

Download Full-text

A fully integrated electroencephalogram (EEG) analog front-end IC with capacitive input impedance boosting loop

Proceedings of the IEEE 2014 Custom Integrated Circuits Conference ◽

10.1109/cicc.2014.6946088 ◽

2014 ◽

Cited By ~ 5

Author(s):

Seunghyun Lim ◽

Changho Seok ◽

Hyunho Kim ◽

Haryong Song ◽

Hyoungho Ko

Keyword(s):

Input Impedance ◽

Fully Integrated ◽

Front End ◽

Analog Front End ◽

Electroencephalogram Eeg

Download Full-text

A 750 mV Fully Integrated Direct Conversion Receiver Front-End for GSM in 90-nm CMOS

IEEE Journal of Solid-State Circuits ◽

10.1109/jssc.2007.897131 ◽

2007 ◽

Vol 42 (6) ◽

pp. 1310-1317 ◽

Cited By ~ 26

Author(s):

Massimo Brandolini ◽

Marco Sosio ◽

Francesco Svelto

Keyword(s):

Direct Conversion ◽

Fully Integrated ◽

Front End

Download Full-text

A 16-channel 38.6 mW/ch fully integrated Analog Front-End for handheld Ultrasound imaging

2014 IEEE Biomedical Circuits and Systems Conference (BioCAS) Proceedings ◽

10.1109/biocas.2014.6981809 ◽

2014 ◽

Cited By ~ 2

Author(s):

Elkim Roa ◽

Kim Beumer ◽

Mohan Chirala

Keyword(s):

Ultrasound Imaging ◽

Fully Integrated ◽

Front End ◽

Analog Front End ◽

Handheld Ultrasound

Download Full-text

Fully integrated 60 GHz transceiver in SiGe BiCMOS, RF modules, and 3.6 Gbit/s OFDM data transmission

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078711000286 ◽

2011 ◽

Vol 3 (2) ◽

pp. 139-145 ◽

Cited By ~ 10

Author(s):

Srdjan Glisic ◽

J. Christoph Scheytt ◽

Yaoming Sun ◽

Frank Herzel ◽

Ruoyu Wang ◽

...

Keyword(s):

Data Transmission ◽

Intermediate Frequency ◽

Phase Locked Loop ◽

Data Rate ◽

Low Noise ◽

60 Ghz ◽

Fully Integrated ◽

Front End ◽

Free Data ◽

Bicmos Technology

A fully integrated transmitter (TX) and receiver (RX) front-end chipset, produced in 0.25 µm SiGe:C bipolar and complementary metal oxide semiconductor (BiCMOS) technology, is presented. The front-end is intended for high-speed wireless communication in the unlicensed ISM band of 9 GHz around 60 GHz. The TXand RX features a modified heterodyne topology with a sliding intermediate frequency. The TX features a 12 GHz in-phase and quadrature (I/Q) mixer, an intermediate frequency (IF) amplifier, a phase-locked loop, a 60 GHz mixer, an image-rejection filter, and a power amplifier. The RX features a low-noise amplifier (LNA), a 60 GHz mixer, a phase-locked loop (PLL), and an IF demodulator. The measured 1-dB compression point at the TX output is 12.6 dBm and the saturated power is 16.2 dBm. The LNA has measured noise figure of 6.5 dB at 60 GHz. Error-free data transmission with a 16 quadrature amplitude modulation (QAM) orthogonal frequency-division multiplexing (OFDM) signal and data rate of 3.6 Gbit/s (without coding 4.8 Gbit/s) over 15 m was demonstrated. This is the best reported result regarding both the data rate and transmission distance in SiGe and CMOS without beamforming.

Download Full-text