A Small Cost-Effective Super Ultra-Wideband Microstrip Antenna With Variable Band-Notch Filtering and Improved Radiation Pattern With 5g/Iot Applications

Abstract

In this work, a new design of small microstrip antenna with variable band-notched filtering characteristic for super ultra-wideband (UWB) applications including 5G/IoT networks is presented. In the proposed structure by creating steps with optimized appropriate sizes and angles in the lower edges of the quasi-square patch antenna and by a new technique of modifying the ground plane, more efficient radiation patterns and characteristic impedance are achieved. Moreover, the omnidirectional low cross-polarized H-plane radiation patterns are obtained in frequency band of 3-11 GHz. Also, its radiation patterns are improved between 11 and 14.5 GHz and have better performance especially with tuning capacitors between 14.5 and 20 GHz. In addition, its frequency bandwidth with VSWR < 2 is from 3 GHz to 50 GHz which covers 5G networks and both ultra-wideband (UWB) and super wideband (SWB) communications. A rectangular slot on the patch is used to create an integrated band-notch filter in the structure to avoid interference with other wireless systems like wireless local area networks (WLANs), and this specification can be activated or deactivated by a PIN diode. In addition, the center frequency of the filter can be tuned by just a varactor diode or a variable capacitor and/or by changing the position of the capacitors in frequency range of about 3.5-6 GHz, which rejects interference of all WLANs and even their lower and upper bands, and nulls in the radiation patterns can be changed especially in upper bands as well. The final structure simulation results are in good agreement with measurement ones.

Design and Analysis of Inscribed Fractal Super Wideband Antenna for Microwave Applications

“…From [6] and [8], it can be stated that though the bandwidth and BDR ratio of the referred antennas are greater than the designed antenna, the gain and bandwidth are less in the published work than the proposed SWB antenna that covers a larger band of frequency than the published work. However, from [9,10,13,14,16,17,25,27,28], it has been observed that the proposed SWB antenna has a wide frequency range, enhanced bandwidth, high peak gain, and high BDR ratio though the antenna is smaller in size than the referred SWB antenna. The superior performance of the proposed SWB antenna in terms of size, bandwidth, and gain makes the proposed antenna most suitable for various microwave applications.…”

“…[12] proposes a skull shaped structure with a slotted rectangular partial ground plane design with a fractional bandwidth of 160.66% ranging from 3 GHz to 27.5 GHz and a peak gain of 6.3 dBi. In [13], a quasi-square with proper sizes and angles on the lower edges of the patch and ground plane with two circular slots is presented, which is a characteristic for SWB applications. The bandwidth is obtained from 3 GHz to 50 GHz with a variable gain of 1 to 9.47 dBi.…”

TV-based Phased Array System Design in BTSs for 5G/IoT Applications

“…For reaching the hundreds of Exabyte, next mobile generations and new cellular communication systems will meet such requirements. Using new spectrum beyond sub-6 GHz frequencies could be one way to address this rising demand and satisfy the needs of greater than 10 Gbps peak and edge speeds of approaching 100 Mbps for extreme mobile broadband (eMBB) applications [1][2][3][4][5]. Furthermore, for optimal performance, wireless sensor networks such as ZigBee, LDWA, LoRa, WWAN, and mobile radio networks such as 2G, 3G, 4G, and soon 5G/6G (5th/6th Generation) require online data processing, artificial intelligence (AI), and machine learning (ML), and all of them need super ultra-wideband communication instruments and systems.…”

UWB Microstrip Patch Antenna with 5G Lower Band Notch Characteristics

“…In order to meet this increased capacity requirement to assist 5G extreme mobile broadband wireless application that require peak speeds of 10 Gbps and higher as well as edge speeds greater than 100 Mbps. With the availability of vast bandwidth at mmWave frequency the fifth generation EMBB standards can met by employing a straightforward signal interface as well as high-dimension phased arrays [2]. Because of the light weight, cost efficient, ease of manufacture and other characteristics, microstrip patch antennas are an excellent candidate for use in ultra-wideband wireless applications [3].…”