Compact beam‐switchable antenna for mm‐wave 5G handheld devices

Reconfigurable Antenna Multiple Access for 5G mmWave Systems

This paper aims to realize a new multiple access technique based on recently proposed millimeter-wave reconfigurable antenna architectures. To this end, first we show that integration of the existing reconfigurable antenna systems with the well-known non-orthogonal multiple access (NOMA) technique causes a significant degradation in sum rate due to the inevitable power division in reconfigurabl...

A Compact Diversity Antenna for Handheld Terminals

⎯The handheld terminals antenna should have a small size, sufficient gain and big bandwidth. In this paper, a compact planar inverted-L diversity antenna for handheld terminals is proposed. Three diversity antennas operating at 2.15 GHz are designed and the effect of important parameters of the proposed antenna is measured. The isolation is found to be better than 13 dB, the usable bandwidth is...

Study of Realistic Antenna Patterns in 5G mmWave Cellular Scenarios

Large antenna arrays and millimeter-wave (mmWave) frequencies have been attracting growing attention as possible candidates to meet the high requirements of future 5G mobile networks. In view of the large path loss attenuation in these bands, beamforming techniques that create a beam in the direction of the user equipment are essential to perform the transmission. For this purpose, in this pape...

Compact massive MIMO antenna array for small 5G base stations

A Miniaturized Loran H-field Antenna for Handheld Devices

This paper presents Loran signal processing results for a series of successively smaller H‐ field square‐loop antennas input to a preliminary design of low‐noise‐optimized, low‐ frequency ASIC. Antennas as small as 5cm (2‐inches) on a side are able to detect Loran signals both outdoors and indoors, although in some cases significantly attenuated compared to signals from a larger 50cm (20‐inch)...