New Adjustable Slot Meander Patch Antenna for 4G Handheld Devices

Abstract

Two different antennas constructed using a new concept, the slot meander patch (SMP) design, are presented in this study. SMP antennas are designed for fourth-generation long-term evolution (4G LTE) handheld devices. These antennas are used for different target specifications: LTE-Time Division Duplex and LTE-Frequency Division Duplex (LTE TDD and LTE FDD). The first antenna is designed to operate in a wideband of 1.68-3.88 GHz to cover eight LTE TDD application frequency bands. Investigations have shown that the antenna designed with unequal meander widths has a higher efficiency compared to its equivalent antenna design with equal meander widths. The second antenna was configured as a multiband SMP antenna, which operates at three distinct frequency bands (0.5-0.75, 1.1-2.7, and 3.3-3.9 GHz), to cover eight LTE FDD application bands including the lowest and the highest bands. There is a good agreement between the measurement and simulation results for both antennas. Moreover, parametric studies have been carried out to investigate the flexible multiband antenna. Results have shown that the bandwidths can be improved through adjusting the meander widths without changing the SMP length and all other parameters. Index Terms-LTE antenna, LTE-FDD frequency bands, LTE-TDD frequency bands, slot meander patch.

Compact 4G MIMO antenna integrated with a 5G array for current and future mobile handsets

“…Several antenna designs complying with 4G standards were presented such as in [4][5][6][7] for wireless handheld devices. In [4] a wideband antenna was presented for the 4G LTE system.…”

Multi-Slot Antennas Excited by Novel Dual-Stub Loaded Microstrip Lines for 4g Lte Bands

“…There has been an enormous effort devoted to the development of new and innovative antennas for smartphones, tablets, laptops, and various other mobile devices. Typically, planar monopoles made of meandered strips, planar inverted-F antennas (PIFA) and slot-based antennas are popularly used in these devices or in base stations [4][5][6][7][8][9][10][11][12][13][14][15][16][17]. A general technique that is applied in many designs is the integration of two or more elements to obtain dual-band operation to cover the lower (around 900 MHz) and upper (around 2 GHz) bands of the large LTE spectrum.…”

“…In [6], two narrow slotted metallic arms with different lengths, connected together by a shorting metallic strip, are discussed where the longer arm covers the frequency band from 698 MHz to 1510 MHz, and the shorter arm covers the high frequency band (1.52-3.8 GHz) of the LTE Spectrum. Dual strip-based [7][8][9], double U-shaped patch-based [10] and slot-meandered [11] antennas are designed to cover upper and lower LTE bands.…”

“…Ansys HFSS, version 16, is used for all simulations. In this paper, the bandwidth definition of S 11 = −6 dB (VSWR = 3) is used as the design specification of handheld mobile user equipment antennas, which is widely accepted [7,11,16,17,27,28]. Figure 1 shows the geometry of the multi-slot antenna.…”

Wideband antenna for 4G MIMO applications

“…These antennas comply with the requirements for the 4G frequency band with MIMO capabilities but are not operational in the 2G and 3G frequencies bands . Wideband antennas which achieve the bandwidth requirements (2G, 3G, and 4G) are not suitable for 4G applications due to their lack of MIMO capabilities . Wideband MIMO antennas suitable for 2G, 3G, and 4G applications tend to be large with complex manufacturing processes and some exhibit nonideal radiation patterns .…”