Abstract This research investigates the MIMO antenna by using Theory of Characteristics Mode (TCM) where 10 modes are subjected in designing. Also, 5 significant mode and 2 correspond to non-significant which defines operating bandwidth notched bands. The proposed × configuration is designed for wideband applications with a size 0.44 0.68 mm . two isolated 12-sided polygons radiating patches placed adjacent each other share common ground printed on an FR4 substrate. measured impedance covers...

The work details the development of a two-port arc-shaped Multiple-Input-Multiple-Output (MIMO) antenna with enhanced isolation characteristics. proposed dual-port MIMO provides wide impedance bandwidth 3.28–5.93 GHz and maximum 27 dB between elements in operating frequency band. A reduced ground plane is utilized to obtain wideband characteristics for antenna. major applications covered by include sub-6 GHz: n77/n78/n79 WiFi-5 bands. important parameters such as Envelope Correlation...

Summary The design of novel compact two‐element and eight‐element lotus shaped multiple‐input‐multiple‐output (MIMO) antenna system employing pattern diversity with enhanced isolation characteristics is presented. proposed arranged rotationally on a square‐hollow substrate resulting in an MIMO diversity. developed resonates the frequency range 3.1 to 14.6 GHz housing complete UWB band triple band‐notch at 3.7–4.5 (C‐band satellite down link [3.7–4.2 GHz]), 5.1–5.9 (WLAN) 6.8–8.25 (X‐band...

The RF (Radio Frequency) signals Carry both energy and information. Harvesting from these leads to new technology such as WEH (Wireless Energy Harvesting). In this paper, the design of a microstrip-fed spurious free slant antenna array for wireless harvesting applications. A prototype operating at 2.45 GHz is designed fabricated. Defected ground structure (DGS) stubs have been used suppress responses. measured results show 19% 10 dB return loss bandwidth, 7.11 dBi average gain, more than 80%...

This paper designs an 8-element MIMO antenna with the connected ground on a novel swastika-shaped substrate for super-wideband applications. The proposed design is working in band of 2.9–15.3 GHz element-to-element isolation minimum above 15 dB, and overall structure dimensions are <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$88\times 88\times 1.6\ mm^{3}$</tex> . designed low cost FR4 material constant 4.4, it covers entire Ultra Wide Band...

Most of RADAR devices are capable transmitting many different types waveforms. Certain waveforms better suited for detecting how fast an object is traveling, while others at the range resolution object. Applications such as radar, sonar and medical imaging, demand proper designs probing waveform. A well-synthesized waveform can significantly increase system performance in terms signal-to-interference ratio, Merit factor, ISL (integrated side lobe level), PSLR (peak ratio), spectrum...

Most of the RADAR and Telecommunication system are affected by EMI. In past, frequency allocation to different bands can minimize EMI narrow bandwidth usage. reduction requires other means than possibly non-interfering coded waveforms or sequences such as PI, P2, P3, P4, Px, Golomb, Frank, Chu known Polyphase sequences. The commonly used in phase amplitude. this paper, Modified Merit Factor (MMF) minimum correlation level parameters analyze RADAR. Weighted Integrated sidelobe (WISL) metric...

This work proposes a novel design of 4-element MIMO antenna for 5G sub: 6GHz N77/N78 and N79 band applications. The proposed is designed on 100 × mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> size FR4 defected substrate having height 1.6mm, constant 4.4. Initially, 30 single designed; later, it extended to antenna. Both the antennas in range 3.0GHz 5GHz cover sub:6 GHz bands, which include N77 (3.3-4.2 GHz) N78 (3.3-3.8 (4.4-5.0...

In the Modern communication field, transmitting data through compact antennas like Microstrip patch plays a major role. For Mobile radiolocation, satellite services, medical applications at Terahertz frequency range. Designing for such this must have less weight and good characteristics. this, graphene is best suitable material design due to its electrical, optical, thermal conductivity properties. So, The Graphene-Based drilled substrate antenna 500 X 40 µm presents simulation in terahertz...

Polyphase sequences such as Pn (n=1, 2, 3, 4, x), Golomb, Frank, and the Chu are with good correlation properties, lower sidelobe levels large merit factor values helpful in applications like radar, sonar channel estimation communications. The goodness of a sequence obtained from factor. transmitted received signal may not be same due to noise. function given is expressed by ISL (Integrated Sidelobe Level) minimizing metrics performance parameter improved. To make this possible metric...

A Novel Multiple Input Output Antenna (MIMO) with eight-element antennas is proposed. The MIMO system covers the frequency range 3.3 GHz to 6 GHz, making antenna suitable for 5G sub: applications. bands covered by are N77 (3.3 4.2 GHz), N78 3.8 N79 (4.4 5.0 and WLAN (5.15 5.85 GHz). developed works in these a reduced mutual coupling of -15 dB between adjacent elements system. maximum isolation 60 obtained among diagonal gain dBi radiation efficiency 97%. proposed very compact low profile...