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Electronically Tunable Current-mode High-order Ladder Low-pass Filters Based on CMOS Technology
(Společnost pro radioelektronické inženýrství, 2015-12)
This paper describes the design of current mode low-pass ladder filters based on CMOS technology. The filters are derived from passive RLC ladder filter prototypes using new CMOS lossy and lossless integrators. The all-pole ...
Envelope Factorization with Partial Elimination and Recombination, EF-PER, a New Linear RF Architecture
(Společnost pro radioelektronické inženýrství, 2015-12)
In this paper, a new architecture for efficient linear radio frequency transmitters is proposed; it includes envelope-tracking (ET) and envelope-elimination-and-restoration (EER) architectures as special instances. The ...
Large Core Three Branch Polymer Power Splitters
(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 ...
Multi-Core DSP Based Parallel Architecture for FMCW SAR Real-Time Imaging
(Společnost pro radioelektronické inženýrství, 2015-12)
This paper presents an efficient parallel processing architecture using multi-core Digital Signal Processor (DSP) to improve the capability of real-time imaging for Frequency Modulated Continuous Wave Synthetic Aperture ...
Low-profile Circularly Polarized Antenna Exploiting Fabry-Perot Resonator Principle
(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 ...
Quasi-Coherent Noise Jamming to LFM Radar Based on Pseudo-random Sequence Phase-modulation
(Společnost pro radioelektronické inženýrství, 2015-12)
A novel quasi-coherent noise jamming method is proposed against linear frequency modulation (LFM) signal and pulse compression radar. Based on the structure of digital radio frequency memory (DRFM), the jamming signal is ...
Research of the Defects in Anesthetic Masks
(Společnost pro radioelektronické inženýrství, 2015-12)
The article concerns the computer-assisted vision system created for the detection of the disposable anesthetic respiratory masks. This article provides the classification of defects which may be common to both rubber and ...
Pascal-Interpolation-Based Noninteger Delay Filter and Low-Complexity Realization
(Společnost pro radioelektronické inženýrství, 2015-12)
This paper proposes a new method for designing the polynomial-interpolation-type noninteger-delay filter with a new structure formulation. Since the design formulation and the new realization structure are based on the ...
Optimization of Far-Field Antenna Range
(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 ...
Video Tracking for Visual Degraded Aerial Vehicle with H-PMHT
(Společnost pro radioelektronické inženýrství, 2015-12)
The work presented in this paper describes a novel approach for automatic video tracking of visual degraded air vehicles in daylight with sky background. The offered and applied video object tracking method is based on ...