Abstract
There has been increasing demand for accessible radio spectrum with the rapid development of mobile wireless devices and applications. For example, a GHz of spectrum is needed for fifth-generation (5G) cellular communication, but the avail- able spectrum below 6 GHz cannot meet such requirements. Fortunately, spectrum at higher frequencies, in particular, millimeter-wave bands, can be utilized through phased-array analog beamforming to provide access to large amounts of spectrum. However, the gain provided by a phased array is frequency dependent in the wideband system, an effect called beam squint. We examine the nature of beam squint and develop convenient models with a uniform linear array. To further simplify the evaluation of the system performance, an approximated closed-form expression for the array gain is derived. Furthermore, to evaluate the performance of the proposed design, rigorous numerical results concerning different system parameters are provided in this paper.
Highlights
Applications of wireless technologies and the number of wireless devices have been growing significantly in the past decade
In applications where behavior is that each bandpass filter and its following phase the reliability of the information on all subcarriers are of shifter perform the PC with respect to the centre frequency equal importance or in scenarios where we do not have the of that bandpass filter
Beam squint is a concern for millimeter wave beam forming .In this paper, an analog architecture design to mitigate the issue of beam-squinting in wideband and ultra-wideband communication systems is proposed
Summary
Applications of wireless technologies and the number of wireless devices have been growing significantly in the past decade. The short wavelengths of millimeter wave frequencies in principle allows for integration of a large number of antennas into a small phased array, which would be suitable for application in commercial mobile devices. A phased array with a large number of antennas can compensate for the higher attenuation.
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