Papers by Sofoklis Plevridis
Hand held spectrometer with networking capability for use in chemical industry
Proceedings of the IEEE International Symposium on Industrial Electronics
ABSTRACT
WCDMA transmit architecture
Configurable RF transmitter
WCDMA transmit architecture
Polar feedback architecture
Polar feedback architecture
Gain step calibration in a mobile cellular transmitter
Multi-mode transmit and receive PLL
Configurable RF Transmitter
Polar Feedback Architecture
High Frequency Communication Device with Minimal Off Chip Components
Ic for a High Frequency Communication Device with Minimal Off Chip Components
Method and system for bandwidth calibration for a phase locked loop (PLL)
Modified dual band direct conversion architecture that allows extensive digital calibration
Method and System for Wcdma Power Amplifier Closed Loop Power Control
WCDMA transmit architecture
RF integrated circuit with transmitter and multipurpose output ports and methods for use therewith
ESSCIRC 2004 - 29th European Solid-State Circuits Conference (IEEE Cat. No.03EX705), 2003
A dual band, transceiver is fabricated on a 0.18µm CMOS process. The fully integrated synthesizer... more A dual band, transceiver is fabricated on a 0.18µm CMOS process. The fully integrated synthesizer and VCO achieve an integrated phase error of 0.8 o at 5GHz. The transmitter achieves -33dB EVM, while the receiver features a 5.2dB noise figure (NF) at 5.25GHz and 3.5dB NF at 2.45GHz. An architecture including feedback paths enables digital calibration, which help eliminate I/Q mismatch and achieve accurately matched baseband filter tuning.
A transceiver for transmitting and receiving signals includes a transmitter operative to up-conve... more A transceiver for transmitting and receiving signals includes a transmitter operative to up-convert baseband signals from a baseband frequency into RF signals at a radio frequency (RF) frequency and output the RF signals, a receiver operative to receive RF signals and down-convert the RF signals into baseband signals having the baseband frequency, and a plurality of calibration paths coupling the transmitter to the receiver. Any of the calibration paths can be selected to be active when calibrating components of the transceiver. Tunable components can use calibration information to optimize transceiver performance.
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Papers by Sofoklis Plevridis