Now showing items 1-13 of 13

  • A 1 GHz, DDR2/3 SSTL driver with On-Die Termination, strength calibration and slew rate control 

    Plessas, F.; Davrazos, E.; Alexandropoulos, A.; Birbas, M.; Kikidis, J. (2012)
    A 1 GHz Double Data Rate 2/3 (DRR2/3) combo Stub Series Terminated Logic (SSTL) driven has been developed for the first time to our knowledge using a 90 nm CMOS process. To satisfy the signal integrity requirements the ...
  • A 1 V CMOS programmable accurate charge pump with wide output voltage range 

    Tsitouras, A.; Plessas, F.; Birbas, M.; Kalivas, G. (2011)
    A 1 V, programmable, accurate, high speed, single-ended charge pump is proposed, suitable for low voltage PLLs. It is designed in TSMC 90-nm digital CMOS process and it consists of four switches in a current steering ...
  • A 2.45GHz power harvesting circuit in 90nm CMOS 

    Giannakas, G.; Plessas, F.; Nassopoulos, G.; Stamoulis, G. (2010)
    In this work, an overview of the state-of-the-art of the design techniques of power harvesting (rectifYing) circuits is presented. The evolution of each circuit, the advantages and design constraints, are investigated and ...
  • 5-GHz fully differential multifunctional circuit 

    Plessas, F.; Tsitouras, A.; Kalivas, G. (2012)
    This letter presents a multifunctional circuit realising the functions of oscillation, frequency multiplication and frequency division at 5-GHz. A theoretical and experimental description of the circuit is given. The ...
  • A linear, ultra wideband, low-power, 2.1-5 GHz, VCO 

    Tsitouras, A.; Plessas, F.; Kalivas, G. (2011)
    A linear, Ultra Wideband, low-power VCO, suitable for UWB-FM applications is proposed, forming the main part of a UWB-FM transmitter. The VCO is designed in TSMC 90 nm digital CMOS process and includes a Source-Coupled ...
  • Phase noise characterization of subharmonic injection locked oscillators 

    Plessas, F.; Tsitouras, A.; Kalivas, G. (2011)
    In this work we present a detailed study of the phase noise of subharmonic injection locked oscillators (s-ILOs). A new simple and efficient model has been presented for accurately predicting the phase noise of a microwave ...
  • Phase noise performance of fully differential sub-harmonic injection-locked PLL 

    Plessas, F.; Gioulekas, F.; Kalivas, G. (2010)
    A fully differential sub-harmonic injection-locked phase-locked loop (PLL) that achieves improved levels of phase noise performance through the incorporation of injection locking and fully differential architecture is ...
  • Pseudo-FG technique for efficient energy harvesting 

    Giannakas, G.; Plessas, F.; Stamoulis, G. (2012)
    A novel 2.45 GHz RF power harvester has been implemented in a 90 nm standard CMOS process. The proposed architecture reduces the threshold voltage (Vth) by employing a pseudo floating-gate (pseudo-FG) new technique and ...
  • A study of superharmonic injection locking in multiband frequency dividers 

    Plessas, F. (2011)
    A superharmonic voltage-controlled injection-locked frequency divider, implemented using a modified Colpitts oscillator operating at 2.5, 5 and 10 GHz and a cross-coupled LC oscillator operating at 1.25, 2.5 and 5 GHz, is ...
  • A sub-1V supply CMOS voltage reference generator 

    Tsitouras, A.; Plessas, F.; Birbas, M.; Kikidis, J.; Kalivas, G. (2012)
    An integrated sub-1V voltage reference generator, designed in standard 90-nm CMOS technology, is presented in this paper. The proposed voltage reference circuit consists of a conventional bandgap core based on the use of ...
  • Ultra wideband, low-power, 3-5.6 GHz, CMOS voltage-controlled oscillator 

    Tsitouras, A.; Plessas, F. (2009)
    In this paper, a low-power inductorless ultra wideband (UWB) CMOS voltage-controlled oscillator is designed in TSMC 0.18 mu m CMOS technology as a part of a ultra wideband FM (UWBFM) transmitter. The VCO includes a ...
  • Ultra-Wideband, Low-Power, Inductorless, 3.1-4.8 GHz, CMOS VCO 

    Tsitouras, A.; Plessas, F. (2011)
    A low-power, inductorless, UWB CMOS voltage controlled oscillator is designed in 0.18 mu m CMOS technology targeting to a UWBFM transmitter application. The VCO is a Double-Cross-Coupled Multivibrator and generates output ...
  • A variable gain wideband CMOS low-noise amplifier for 75 MHz-3 GHz wireless receivers 

    Vassou, C.; Plessas, F.; Terzopoulos, N. (2013)
    A wideband CMOS variable gain low noise amplifier suitable for multi-standard radio applications between 75 MHz and 3 GHz is presented. Wideband matching to 50 Ohm (single ended) is achieved using a common-drain feedback ...