Now showing items 21-28 of 28

  • Development of a Symmetric Ring Junction as a Four-Port Reflectometer for Complex Reflection Coefficient Measurements 

    Lee, K.Y.; Chung, B. K.; You, K. Y.; Cheng, E. M.; Abbas, Z. (Společnost pro radioelektronické inženýrství, 2015-12)
    Six-port reflectometer is well-known for its ability to measure magnitude and phase-shift of microwave signal using four power detectors that perform magnitude-only measurements. This paper presents the development of an ...
  • Efficient Simulation for Fixed-Receiver Bistatic SAR with Time and Frequency Synchronization Errors 

    Feifei Yan; Wenge Chang; Xiangyang Li (Společnost pro radioelektronické inženýrství, 2015-12)
    Time and frequency synchronization is the key technique of bistatic synthetic aperture radar (BiSAR) system, and raw data simulation is an effective tool for verifying the time and frequency synchronization techniques. ...
  • Generalized Analysis Method for a Class of Novel Wideband Loaded-Stub Phase Shifters 

    Sensong An; Badar Muneer; Qi Zhu (Společnost pro radioelektronické inženýrství, 2015-12)
    In this paper, an analysis method of wideband loaded-stub phase shifters and a fast designing procedure is presented. These kinds of phase shifters use a transmission line loaded with one or two open stubs and a reference ...
  • Ku Band Rotary Joint Design for SNG Vehicles 

    Torpi,H.; Bostan, S. M. (Společnost pro radioelektronické inženýrství, 2015-12)
    A wideband I-type rectangular waveguide rotary joint (RJ) is designed, simulated and built. It has an excellent performance over the whole Ku Band (10.7-14.5 GHz) where the return loss is less than -23 dB at its highest ...
  • Large Core Three Branch Polymer Power Splitters 

    Prajzler, V.; Mastera, R.; Spirkova, J. (Společnost pro radioelektronické inženýrství, 2015-12)
    We report about three branch large core polymer power splitters optimized for connecting standard plastic optical fibers. A new point of the design is insertion of a rectangle-shaped spacing between the input and the central ...
  • Low-profile Circularly Polarized Antenna Exploiting Fabry-Perot Resonator Principle 

    Pítra, Kamil; Raida, Zbyněk; Lacik, J. (Společnost pro radioelektronické inženýrství, 2015-12)
    We designed a patch antenna surrounded by a mushroom-like electromagnetic band-gap (EBG) structure and completed it by a partially reflective surface (PRS). EBG suppresses surface waves and creates the bottom wall of the ...
  • Optimization of Far-Field Antenna Range 

    Cerny, O.; Dolecek, R.; Kopecky, P.; Schejbal, V.; Zavodny, V. (Společnost pro radioelektronické inženýrství, 2015-12)
    Measurements of test antennas are performed on antenna ranges. The operated microwave far-field outdoor range was built-up in 1970’s and therefore it was not appropriate for the today measurements. Thus, it was decided to ...
  • A Microwave Metamaterial Inspired Sensor for Non-Invasive Blood Glucose Monitoring 

    Vrba, J.; Vrba, D. (Společnost pro radioelektronické inženýrství, 2015-12)
    In this paper, a microwave sensor based on an artificial transmission line is proposed for non-invasive blood glucose monitoring. A corresponding numerical model of the sensor implemented in microstrip technology is created ...