Browsing by Author "Antoniades, Marco A."

Now showing items 1-20 of 22

    • Conference Object  

      3D Radar Localization via Photonic Chirp Leaky-Wave Antenna Beam Scanning 

      Steeg, Matthias; Tebart, Jonas; Neophytou, Kyriakos; Antoniades, Marco A.; Iezekiel, Stavros; Stöhr, Andreas (2019)
      We report a photonic frequency-modulated continuous wave (FMCW) radar system that provides 3D localization with a simple radar frontend. This is achieved by exploiting linearly polarized leaky-wave antennas (LWAs) for ...
    • Conference Object  

      Chua Mem-Components for Adaptive RF Metamaterials 

      Georgiou, Julius; Kossifos, K. M.; Antoniades, Marco A.; Jaafar, A.H.; Kemp, N. T. (2018)
      Chua's mem-components are ideal for creating adaptive metasurfaces for manipulating EM waves given that they hold their state without external biases. In this paper, we propose a generic adaptive reactive element that is ...
    • Article  

      Compact and Unidirectional Resonance-Based Reflector Antenna for Wideband Electromagnetic Imaging 

      Rezaeieh, Sasan Ahdi; Antoniades, Marco A.; Abbosh, Amin M. (2018)
      A unidirectional and wideband resonance-based reflector (RBR) antenna that can be used for biomedical applications, such as thorax imaging, is proposed. One of the main limitations in the design of biomedical systems, which ...
    • Conference Object  

      Compact Fixed-Beam Leaky-Wave Antenna for 5G Millimeter-Wave Applications 

      Neophytou, Kyriakos; Steeg, Matthias; Stöhr, Andreas; Antoniades, Marco A. (2019)
      A planar, compact, fixed-beam leaky-wave antenna operating at 26 GHz is proposed, that consists of a periodic arrangement of series-fed microstrip patches. The antenna consists of two oppositely-directed branches of the ...
    • Article  

      A compact microstrip crossover using NRI-TL metamaterial lines 

      Abbasi, Muhammad Ali Babar; Antoniades, Marco A.; Nikolaou, Symeon (2018)
      A practical implementation of a miniaturized crossover is presented using negative-refractive-index transmission-line (NRI-TL) metamaterial lines. NRI-TL metamaterial theory has demonstrated that by loading a conventional ...
    • Article  

      A Compact Reconfigurable NRI-TL Metamaterial Phase Shifter for Antenna Applications 

      Abbasi, Muhammad Ali Babar; Antoniades, Marco A.; Nikolaou, Symeon (2018)
      This communication presents a compact reconfigurable phase shifter based on negative-refractive-index transmissionline (NRI-TL) metamaterial unit cells. Two interswitchable NRI-TL metamaterial unit cells are collocated ...
    • Conference Object  

      Compact Yagi antenna utilizing mu-negative metamaterial loading of director element 

      Rezaeieh, Sasan Ahdi; Antoniades, Marco A.; Abbosh, Amin M. (2018)
      A new technique to miniaturize Yagi antennas utilizing mu-negative (MNG) metamaterial loading is presented. In this method, the director element of the printed Yagi antenna is loaded with MNG-metamaterial unit-cells to ...
    • Article  

      DC voltage boosting technique in radio frequency wireless power transfer systems utilising high PAPR digital modulations 

      Neophytou, Kyriakos; Antoniades, Marco A. (2019)
      This work investigates the performance of an envelope detector under high peak-to-average power ratio (PAPR) waveform excitations. First, the use of multi-stage rectifiers is investigated in wireless power transfer systems, ...
    • Conference Object  

      A Geometrically Phase-Compensated Transformation Optics Superstrate for Fixed-Beam Broadband Leaky-Wave Radiation 

      Markley, Loïc; Noor, Asif Al; Neophytou, Kyriakos; Antoniades, Marco A. (2019)
      We present a broadband leaky-wave antenna designed using phase-compensated transformation optics. A graded dielectric superstrate is placed above a leaky slot line to produce radiation at a fixed angle off broadside. ...
    • Article  

      Intelligent Metasurfaces with Continuously Tunable Local Surface Impedance for Multiple Reconfigurable Functions 

      Liu, Fu; Tsilipakos, Odysseas; Pitilakis, Alexandros; Tasolamprou, Anna C.; Mirmoosa, Mohammad Sajjad; Kantartzis, Nikolaos V.; Kwon, Do-Hoon; Georgiou, Julius; Kossifos, Kypros; Antoniades, Marco A.; Kafesaki, Maria; Soukoulis, Costas M.; Tretyakov, Sergei A. (2019)
      Electromagnetic metasurfaces can be characterized as intelligent if they are able to perform multiple tunable functions, with the desired response being controlled by a computer influencing the individual electromagnetic ...
    • Conference Object  

      Leveraging CPU Electromagnetic Emanations for Voltage Noise Characterization 

      Hadjilambrou, Zacharias; Das, Shidhartha; Antoniades, Marco A.; Sazeides, Yiannakis (2018)
      Worst-case dI/dt voltage noise is typically characterized post-silicon using direct voltage measurements through either on-package measurement points or on-chip dedicated circuitry. These approaches consume expensive pad ...
    • Conference Object  

      A Novel S-Band Bandpass Filter (BPF) with Extremely Broad Stopband 

      Vryonides, Photos; Arain, Salman; Quddious, Abdul; Antoniades, Marco A.; Nikolaou, Symeon (2018)
      This paper presents a new compact wideband bandpass filter (BPF) with an extremely broad stopband consisting of two parallel coupled-line sections and multiple open-ended stubs, for S-band applications. Due to symmetry of ...
    • Article  

      A NRI-TL Metamaterial Leaky-Wave Antenna Radiating at Broadside With Zero Beam-Squinting 

      Kossifos, Kypros M.; Antoniades, Marco A. (2018)
      An implementation of a planar fixed-beam leaky-wave antenna that radiates at broadside is presented, consisting of a periodic arrangement of negative-refractive-index transmission-line (NRI-TL) metamaterial unit cells. ...
    • Article  

      On the Use of Tunable Power Splitter for Simultaneous Wireless Information and Power Transfer Receivers 

      Quddious, Abdul; Abbasi, Muhammad Ali Babar; Tariq, Muhammad Haroon; Antoniades, Marco A.; Vryonides, Photos; Nikolaou, Symeon (2018)
      The use of a tunable power splitter (PS) as a constituent component of a simultaneous wireless information and power transfer (SWIPT) system is discussed. Two varactor diodes are used to achieve a tunable output power ratio ...
    • Conference Object  

      An Optically-Programmable Absorbing Metasurface 

      Kossifos, K. M.; Antoniades, Marco A.; Georgiou, Julius; Jaafar, A. H.; Kemp, N. T. (2018)
      A tunable metasurface absorber is presented in this work using an optically-programmable capacitor as the tuning element. The tuning element does not employ conventional semiconductor technologies to operate but rather a ...
    • Article  

      Reconfigurable Bandwidth Bandpass Filter With Enhanced Out-of-Band Rejection Using $\pi $ -Section-Loaded Ring Resonator 

      Arain, Salman; Vryonides, Photos; Abbasi, Muhammad Ali Babar; Quddious, Abdul; Antoniades, Marco A.; Nikolaou, Symeon (2018)
      A novel ring resonator bandpass filter with reconfigurable bandwidth with central frequency at 2.4 GHz is demonstrated. Theoretical analysis for computing the resonant frequencies is shown, and the design approach of ...
    • Article  

      Sensing CPU Voltage Noise Through Electromagnetic Emanations 

      Hadjilambrou, Zacharias; Das, Shidhartha; Antoniades, Marco A.; Sazeides, Yiannakis (2018)
      This work proposes sensing CPU voltage noise through wireless electromagnetic (EM) emanations from the CPU. Compared to previous voltage monitoring methodologies, this approach is not intrusive as it does not require direct ...
    • Article  

      Sensing CPU Voltage Noise Through Electromagnetic Emanations 

      Hadjilambrou, Zacharias; Das, Shidhartha; Antoniades, Marco A.; Sazeides, Yiannakis (2018)
      This work proposes sensing CPU voltage noise through wireless electromagnetic (EM) emanations from the CPU. Compared to previous voltage monitoring methodologies, this approach is not intrusive as it does not require direct ...
    • Conference Object  

      Uniplanar Rectenna Designs Matched with either Active or Passive DC-to-DC Converter 

      Quddious, Abdul; Vryonides, Photos; Nikolaou, Symeon; Antoniades, Marco A. (2019)
      Two rectenna designs consisting of a patch antenna and a voltage doubler operating at 5.6 GHz are presented. Rectenna-1 is matched with a varying input impedance active DC-to-DC booster based on Texas Instruments charge ...
    • Article  

      UWB antenna with dynamically reconfigurable notch band using rectenna and active booster 

      Quddious, Abdul; Abbasi, Muhammad Ali Babar; Tahir, Farooq A.; Antoniades, Marco A.; Vryonides, Photos; Nikolaou, Symeon (2019)
      In this study, an ultra-wideband (UWB) monopole antenna with a dynamically reconfigurable notch band, along with the associated RF-triggered power management unit (PMU) that enables the dynamic reconfigurability, are ...