Reconfigurable all-band RF CMOS transceiver for GPS/GLONASS/Galileo/Beidou with digitally assisted calibration

S Li, J Li, X Gu, H Wang, C Li, J Wu… - IEEE Transactions on …, 2014 - ieeexplore.ieee.org
This paper presents a fully integrated reconfigurable all-band RF transceiver for
GPS/GLONASS/Galileo/Beidou in 55-nm CMOS. The transceiver incorporates three low-IF …

28-GHz CMOS direct-conversion RF transmitter with precise and wide-range mismatch calibration techniques

Y Lee, B Kim, H Shin - Electronics, 2022 - mdpi.com
A millimeter-wave direct-conversion radio-frequency (RF) transmitter requires precise in-
/quadrature-phase (I/Q) mismatch calibration and dc offset cancellation to minimize image …

Active eight-path filter and LNA with wide channel bandwidth and center frequency tunability

B Behmanesh, SM Atarodi - IEEE Transactions on Microwave …, 2017 - ieeexplore.ieee.org
This paper presents a differential eight-path bandpass filter with tunable center frequency
and bandwidth. Fully differential Miller compensated Butterworth Gm-C biquads are used to …

Design of a three-stage ring-type voltage-controlled oscillator with a wide tuning range by controlling the current level in an embedded delay cell

W Lee, J Shim, J Jeong - Microelectronics Journal, 2013 - Elsevier
This paper presents a new design for a three-stage voltage-controlled differential ring
oscillator embedded with a delay cell for a wide tuning range from 59 MHz to 2.96 GHz by …

Enhancement of frequency synthesizer operating range using a novel frequency-offset technique for LTE-A and CR applications

KC Peng, CH Lee, CH Chen… - IEEE transactions on …, 2013 - ieeexplore.ieee.org
This paper presents a novel frequency-offset technique to enhance operating range of
frequency synthesizers for long-term evolution-advanced and cognitive-radio applications …

A dual-band CMOS LC-VCO with highly linear frequency tuning characteristics

Y Luo, C Ma, Y Gan, M Qian, T Ye - Microelectronics Journal, 2015 - Elsevier
A dual-band wide range LC voltage controlled oscillator (VCO) with highly linear frequency
tuning characteristics for GNSS application is presented. The linearity of VCO includes the …

Fast automatic frequency calibrator using an adaptive frequency search algorithm

H Ryu, ET Sung, S Park, JK Cho… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
A new adaptive frequency search algorithm (A-FSA) is presented for a fast automatic
frequency calibrator in wideband phase-locked loops (PLLs). The proposed A-FSA …

21.4 A microfluidic-CMOS platform with 3D capacitive sensor and fully integrated transceiver IC for palmtop dielectric spectroscopy

M Bakhshiani, MA Suster… - 2015 IEEE International …, 2015 - ieeexplore.ieee.org
Quantitative measurement of the complex relative dielectric permittivity (ε r) of a material vs.
frequency (ie, dielectric spectroscopy, or DS) is a powerful monitoring technique that extracts …

A 100–800 MHz 8-Path Polyphase Transmitter With Mixer Duty-Cycle Control Achieving 40 dBc for ALL Harmonics

S Subhan, EAM Klumperink, A Ghaffari… - IEEE Journal of Solid …, 2014 - ieeexplore.ieee.org
Radio transceivers capable of dynamic spectrum access require frequency-agile
transmitters with a clean output spectrum. High-Q filters are difficult to implement on chip and …

A combinatorial impairment-compensation digital predistorter for a sub-GHz IEEE 802.11 af-WLAN CMOS transmitter covering a 10x-wide RF bandwidth

CF Cheang, KF Un, WH Yu, PI Mak… - IEEE Transactions on …, 2015 - ieeexplore.ieee.org
A new combinatorial impairment-compensation digital predistorter (DPD) for a sub-GHz
IEEE 802.11 af-WLAN CMOS transmitter (TX) is proposed. For the TX to cover a 10x-wide …