Design of UWB microstrip patch antenna with variable band notched characteristics

Abstract

Recently lower frequency band 4.5 − 5.5 GHz is proposed by the ASEAN countries for 5G cellular application and therefore, it is essential of designing an ultra-wideband (UWB) antenna for the particular band-notched characteristics. In this article, a compact tuning fork shape ultra-wideband (UWB) patch antenna with a variable band-notched characteristic has been proposed for 5G cellular application. The UWB antenna has been achieved by using a tuning fork shape with a simple partial ground plane. A pair of ring shape slits (RSS) on the ground plane has been added to achieve the band-notched characteristic. The proposed antenna has achieved a large −10 dB bandwidth of 7.8 GHz (2.9 − 11 GHz) and the VSWR value is less than 2 for the entire bandwidth excepted for notched frequency bands of lower 5G bands (4.5 − 5.5 GHz). Moreover, the antenna has a peak radiation efficiency of more than 87% for UWB and less than 27% for the notched frequency band. The notched-band is shifted with the change in the position of RSS's within the vertical axis and thus, the variable band-notched characteristics have been achieved. Besides, the proposed antenna is compact with the dimension of 45 × 34 mm 2 that makes it suitable for the lower band of 5G application.

Design and analysis of frequency reconfigurable antenna in S-band

“…From the table, it can be seen that the designed antenna (frequency configurable antenna) is best suited for the frequencies 2.1, 2.4, and 3.0 GHz. Single heart shape reconfigurable 2.12-2.88 GHz Omnidirectional pattern [27] Frequency reconfigurable single port 2.0-2.8 GHz WiMax/Cband, Cband/WLAN or Xband [28] Microstrip patch antenna 12.8-15.8 GHz Ku band for satellite [29] Compact tuning fork shape ultra-wideband (UWB) 4.5-5.5 GHz GPS, WLAN/Wi-Fi, WiMax, 4G LTE, UWB [30] Slotted bowtie antenna multiband and wideband antenna 3.5-9.0 GHz Multimode communication systems [31] Planar inverted-F antenna 0.980-3.392 GHz GPS, WLAN/Wi-Fi, WiMax, 4G LTE, UWB [32] Compact and multiband frequency 3.1-10.6 GHz Cognitive radio [33] Hexagonal shaped microstrip UWB…”

UWB Microstrip Patch Antenna with 5G Lower Band Notch Characteristics

“…With the FR-4 substrate the antenna design that has been suggested and constructed. The UWB antenna with a low profile has been added to the list in [10]. Given that the suggested design has a monopole antenna the device will only radiate vertical waves whereas previously documented band notched UWB antennas radiate horizontally across the entire bandwidth.…”

“…The suggested design for the use of steps that are constructed with optimally acceptable dimensions and angles as well as a new technique for changing the ground plane all of which are intended to ensure that the patterns of efficient radiation and the characteristic impedance have been obtained. Additionally, an omnidirectional H-field radiation pattern of a monopole antenna is obtained over the entire frequency spectrum of (3)(4)(5)(6)(7)(8)(9)(10)(11) GHz. This antenna is suited for wideband communication like 5G and frequency segments that run from (4.5-6.5) GHz which have notch bandwidth.…”

Design compact microstrap patch antenna with T-shaped 5G application

“…Wong in [16], Baudha and Kumar [17], methods such as U-shaped and rectangular segmentation have been proposed to improve the bandwidth of microstrip antennas. Many frequency bands have narrowband applications [18], [19] like 3.3 GHz to 3.7 GHz for WiMAX [20], lower frequency band (4.5-5.5 GHz) for 5G applications [21], 5.15 GHz to 5.35 GHz, and 5.725 to 5.825 GHz for WLAN [22]. Antenna bandwidth can also be enhanced through using two pairs of quarter wavelengths (λ/4) microstrip line resonators, paired close to the rectangular patch antenna [23], [24].…”