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A multilayer bidirectional circularly polarized antenna for underground communications is presented in this letter. The antenna consists of two slot-coupled back-to-back arranged rotated patches and a T-type strip feed-line. The H-shaped aperture is adopted to provide a favorable axial-ratio (AR) bandwidth. Identical left-hand circular polarization in the front and back of the radiating antenna is...
This paper presents a system-level design approach from application perspective for an SDR based MPSoC (Multi-Processor System-on-Chip) in LTE baseband processing. Based on a quantitative measurement, a 0–1 knapsack model is proposed for hardware-software partition to enhance flexibility by replacing ACC (ACCelerator) with ASIP (Application-Specific Instruction-set Processor). In order to reduce the...
A novel dual-wideband bandpass filter (BPF) with controllable center frequencies and bandwidths, as well as high band-to-band isolation level and skirt selectivity, is presented in this letter. The proposed filter is based on a novel penta-mode resonator (PMR). The first two modes are employed to generate the first passband, and the other three modes are used to form the second one. Even- and odd-mode...
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