Design of a Multiple Band Vehicle-Mounted Antenna

Abstract

This paper designs a vertically polarized, horizontal, omnidirectional vehicle antenna for the mobile communication band, covering the available frequency bands of the wireless sensor network and 5G. The antenna is composed of semi-T monopole and semicone monopole, which are placed vertically on the metal plate, especially suitable for being mounted on top of a car. T-branch mainly works at low frequency, and cone branch mainly works at high frequency. The cone branch adopts tapered structure in order to improve the impedance matching of antenna and increase the bandwidth of antenna. The antenna can be miniaturized by cutting the antenna in half. The operating frequencies of the antenna are 770 MHz–1000 MHz and 1.7 GHz–3.78 GHz which can cover multiple wireless system bands, including GSM, LTE, and 5G.

A Novel Dual-Band “C+O” Structure Antenna

“…e local current mode is changed on the antenna radiator to produce different resonant frequencies [16]. It can be understood from this article that the tapered structure can effectively increase the bandwidth and improve the impedance matching of the antenna and the antenna can be cut in half to achieve miniaturization [17]. Not only that, there are many ways to achieve multiband antennas, including coupling feed technology [18][19][20][21], matching network technology [22,23], and distributed inductive loading technology [24,25].…”

A 3-Dimensional Multiband Antenna for Vehicular 5G Sub-6 GHz/GNSS/V2X Applications

“…e most used LTE antenna types are monopoles and planar inverted-F antennas (PIFAs). For the 5G sub-6 GHz, there are fewer antennas in the literature such as the monopole antennas reported in [16][17][18].…”

A Triple Band C-Shape Monopole Antenna for Vehicle Communication Application

“…However, the antenna design suffers from limited space, the coupling between antennas, and shadowing of other radiation patterns due to a multitude of near-field effects. Also optimum positions are difficult to identify [8][9][10][11][12][13][14][15].…”

“…However, the antenna design suffers from limited space, the coupling between antennas, and shadowing of other radiation patterns due to a multitude of near-field effects. Also optimum positions are difficult to identify [8][9][10][11][12][13][14][15].Several microstrip-feed and CPW-feed printed monopole antennas that can support WLAN and WiMAX applications, while potentially applicable as V2X vehicle antenna, have been reported and well designed to meet a dual or triple band operation [16][17][18][19][20][21][22][23][24][25][26]. In [27], two open ended inverted L-shaped slots on the radiation patch have been designed, but the slot position and dimension were ambiguous, and the E-plane radiation pattern was uneven.…”