Millimeter Wave Antenna Design for 5G Applications

Abstract

In the current mobile networking regime, cellular service providers are continuously facing bandwidth constraints due the ever-growing demand for mobile services. As future emerging services become more rich in content, their QoS requirements become more stringent in terms of delivering high quality, low latency, and high bandwidth connectivity. This trend provided the impetus for 5th Generation (5G) cellular networks that are anticipated to be deployed in the coming years. A distinguishing feature for 5G is the use of millimetre wave technology as a means towards harnessing more available bandwidth. This places new design requirements on the antenna technology in terms of miniaturisation and multimode connectivity. This chapter describes a family of future antennas for 5G wireless mobile communication. These antennas constitute a rectangular patch element printed over 0.8mm RF4 substrate. The antennas have a simple structural layout and have low profile with over-all volume of 5x5x0.8mm 3 .For bandwidth improvement purpose, a defected ground plane (DGP) approach was implemented, which demonstrated a broadband impedance response in the millimetre wave (mmW) spectrum from 30GHz to 45GHz, covering Ka band. Furthermore, an L-shaped slot was inserted over the right bottom corner of the patch in order to generate a notched-band feature at 40GHz. To tune this rejected band, a lumped capacitor was attached on a appropriate location over the slot. The proposed antennas have good performance in terms of return loss, bandwidth coverage, antenna gain, and high efficiency over the entire frequency range.

An efficient antenna system with improved radiation for multi-standard/multi-mode 5G cellular communications

“…For smartphones, compact antennas can be used to form a linear phased array with high gain and directional radiation beams on the edges of the PCBs 27,28 . Moreover, end-fire antennas are more suitable for achieving the required full radiation coverage than conventional antennas, such as patch, slot, or monopole antennas 29 . Therefore, in addition to the proposed 3.6 GHz MIMO antenna, we have proposed a new mm-wave antenna package to operate at MM-Wave frequencies.…”

Multi/Broad-Band Phased Array Enabling Capacity and Physical-Layer Security in Cyberspace Mobile Communications for 5G and Beyond

“…As shown, highly satisfactory radiations which support half radiation coverage with end-fire modes and constant performance have been discovered for different frequencies. Another set of the suggested array can be deployed at the bottom side of the board for full coverage purposes [26][27]. The gain-levels of the single Yagi-dipole and its linear array and the results have been conducted and shown in Fig.…”

Phased Array with Radiation-mode Reconfigurability for 28 GHz Cognitive Cellular Communications

“…For point-to-point 5G communications, mm-Wave antenna arrays with beam-steering and an increased number of elements are required for the user equipment base stations [5,6]. To form phased arrays, small antennas can be arranged linearly or planarly [7][8][9][10]. Smart handheld devices with beamsteerable phased array antennas are very attractive applications for 5G due to their ability to increase the capacity of coverage of the network [11][12][13][14][15].…”