Patch Antenna Loaded With Paired Shorting Pins and H-Shaped Slot for 28/38 GHz Dual-Band MIMO Applications

Abstract

A novel dual-band patch antenna operating at 28/38 GHz is proposed for multiple-input multiple-output (MIMO) communication systems in this paper. The antenna utilizes substrate integrated waveguide (SIW) transmission line as the feed by means of a coupling slot on the SIW. A square patch antenna functions as the radiator for 28 GHz. The inductive loading, which presents as a pair of shorting pins in this design, achieves the impedance matching for 28 GHz-band. Etched on the square patch, the proposed H-shaped slot makes the radiator to performance as an antenna containing two radiating arms and thus introduces another resonant frequency at 38 GHz. Directions of the surface current on the paired arms are identical and produce a reasonable radiation pattern for 38 GH-band. Simulated results declare that the antenna achieves an S 11 < −10 dB bandwidth of 27.6-28.5 GHz (relative bandwidth of 3.2%) and 36.9-38.9 GHz (relative bandwidth of 5.3%), while simulated gain is 9.0 dBi at 28 GHz and 5.9 dBi at 38 GHz, respectively. Measured results have verified the feasibility and correctness of the proposed dualband antenna, which indicate that the antenna is a promising candidate for MIMO communication systems at millimeter-wave (mmW) band. INDEX TERMS Dual-band, patch antenna, 28/38 GHz, multiple-input multiple-output (MIMO), shorting pin, H-shaped slot, millimeter-wave (mmW).

Compact MIMO Shorted Microstrip Antenna for 5G Applications

“…It consists of three metal layers and stacked substrates. It is designed to operate at 28 & 38 GHz band in [3]. In [4], PIFA with a meandered slot is used for getting multifrequency band operation at 2.4GHz and 5.7GHz.…”

“…Two configurations of antenna which gives pattern diversity and polarization diversity is discussed. Each element occupies a volume of 0.455cm 3 . A compact square slot microstrip antenna operating at 3.5 GHz is discussed in [11] in which the bandwidth of the antenna is improved by increasing the thickness of the substrate.…”

Integration of Sub-6-GHz and mm-Wave Bands With a Large Frequency Ratio for Future 5G MIMO Applications

“…However, the proposed spectrum involves challenges and shortcomings regarding propagation, which could also affect network deployment. Therefore, the prime 5G mid-band (3.4-3.6 GHz) has been assigned by the ITU WRC-15 and has already been deployed for the broadband cellular communication system; this band can offer wider area coverage with fewer propagation losses, while the mm-wave bands for short-range indoor links are still in developing stages [5]. The prime 5G band with upcoming mm-wave bands (e.g., 28 GHz) will be suitable for dense 5G small-cell networks in urban areas where additional capacity is vital.…”

High-Gain Vivaldi Antenna with Wide Bandwidth Characteristics for 5G Mobile and Ku-Band Radar Applications

“…This range includes 15 GHz and 18 GHz frequencies which can be used for Ku-band applications and may be used for 5G [24][25][26][27][28][29][30][31][32]. In addition to Ku-band, this antenna also covers and (33)(34)(35)(36)(37)(38)(39)(40) bands, in which 28 GHz and 38 GHz are considered candidate frequencies for future 5G communications [33][34][35]. Gain values obtained from singe element type-C AVA antenna are 2.5 dBi, 3.4 dBi, 3.6 dBi, and 7.4 dBi at the targeted frequencies of 15 GHz, 18 GHz, 28 GHz, and 38 GHz, respectively.…”

“…The S-parameter is below −10 dB in the following three resonant bands, that is, a. Ku-Band (14.44-20.98 GHz) b. 1st mmW band (24.34-29 GHz)c. 2nd mmW band(33)(34)(35)(36)(37)(38)(39)(40)…”