Abstract The 5 th generation new radio (5G NR) standards create both enormous challenges and potential to address the spatio-spectral-temporal agility of wireless transmission. In framework a research unit at TU Ilmenau, various concepts were studied, including approaches toward integrated circuits distributed receiver front-ends (FEs). We report here on latter approach, aiming proof-of-princip...

In phased array antennas, the number of radiator rows is one of the important factors to minimizing both cost and weight. Therefore, the antenna tilt angles having relation with the element spacing are among the important design parameters. In this paper, the optimum tilt angles for several types of dipole planar arrays are investigated theoretically. To obtain optimum tilt angles, the directiv...

This letter presents a novel concept of beam-steerable transponder based on antenna array and phased modulators. The steerability the beam is achieved by optimally delaying modulated reflected signal at each element (i.e., changing phase in frequency domain) with load modulation technique. In this manner, backscattered power can be maximized one particular direction. approach makes to collect a...

Research in inexpensive millimeter wave devices and electronically steerable antennas forbodes future high speed communications that use carrier frequencies at millimeterwave frequencies such as 38 and 60 GHz. At these frequencies, the available RF bandwidth is much greater than that of current 4G systems, resulting in massive amounts of data rates, and high gain millimeterwave steerable antenn...

background and aims. espar is a dairy product of probiotic nature that contains useful bacteria and high calcium con-tent. the aim of this study was to analyze effects of daily consumption of espar on the number of salivary mutans strepto-cocci and the level of calcium content in a population of 15 to 17 year-old female students. materials and methods. a double-blind randomized crossover study ...

This paper describes a multichannel nucroelectrode array capable of recording angle-unit neural actlwty m the central nervous system The probe features 32 recording sites on a scaled shank less than 50 pm wide On-chip CMOS clrcmtry amplements signal amphficatlon, multlplexmg, and selftestmg on eight active channels selected from among the 32 sites The clrcmtry has a power dissipation of 3 mW, a...

Thermal ablation is an interventional technique that promises to enable percutaneous treatment of many cancers and other disorders throughout the human body. Acoustic ablation offers the possibility of steering thermal energy electronically [1], and is known to be MRI compatible, and thus amenable to real-time thermal dose monitoring through MR thermometry. We propose a pneumatically actuated r...