Radiation properties of graphene‐based optically transparent dipole antenna

Abstract

2.1 dB for the backward -z-radiation and 1.5 dB for the forward +z-radiation at 1.580 GHz and 2.230 GHz, respectively. The 3-dB AR bandwidths of about 15 MHz from 1.573 GHz to 1.588 GHz and 17 MHz from 2.223 GHz to 2.240 GHz were about 0.95% for the -z direction and 0.76% for the +z direction. The measured RHCP gain is observed by -4.55 dBic for backward radiation at 1.578 GHz and 0 dBic for forward radiation at 2.228 GHz. | CONCLUSIONThe novel microstrip antenna design method is investigated and demonstrated to reduce the cost and weight of a CubeSat payload. The single arrow-ended cross slot embedded on the ground layer is dually used for the slot antenna fed by the microstrip aperture and the perturbation of the square microstrip antenna. The capabilities of the dual-band bidirectional RHCP at the L1-band and S-band are obtained using a simple design and a single layered substrate. The results demonstrate the proposed antenna may be an excellent candidate for the wireless positioning and satellite communication of a CubeSat system. ORCID Seongmin PyoAbstract A compact wideband bandpass filter (BPF) with broad stopband using hybrid half-mode substrate integrated waveguide (HMSIW) resonator and open-circuit trisection SIRs (OTSIRs) is proposed. A BPF with 3 transmission poles (TPs) and 3 transmission zeros is obtained by cascading the HMSIW resonator and OTSIRs using J and K inverters. A demonstrated wideband BPF with

Transparent Antenna for Green Communication Feature: A Systematic Review on Taxonomy Analysis, Open Challenges, Motivations, Future Directions and Recommendations

“…For different applications that crave transparency and conductivity, FTO film material can be used [36]. Meanwhile, graphene-based optically transparent antennas can be used for practical applications [45]. Silver tin oxide is preferable in transparent antennas due to its acceptable value of conductivity and optical transparency over other conventional antennas.…”

“…conductive polymers and Conductive inks, such as silver-coated polyester (AgHT-4, AgHT-8) [ [38] , Known for its high optical transmission, relatively low resistivity, non-toxicity, low material cost and good stability, the Al doped ZnO (AZO) film is one of the most promising transparent and conductive oxide (TCO) thin films [7] [39]. and Ga-doped ZnO (GZO) [40] , Titanium Indium Oxide (TIO) [35,41] [42], and aluminum doped zinc oxide (AZO)/silver nanowire (AgNWs), or silver nanowire (AgNWs) [43] [44], and graphene [45] are popular transparent conductive thin films . The thin films that can be applied in displays, LEDs, EMI-screens, and photovoltaic equipment are most popular is indium-tin-oxide (ITO).…”

“…And as Compact and Transparent Antennas using a plexiglass substrate with AgHT-8 for 5G communication systems [18] , or soda lime glass substrate with fluorine-doped tin oxide (FTO) for wireless local area network (WLAN) [36] . and as Optically Transparent Antennas using glass as a substrate with indium tin oxide (ITO) for solar energy harvesting [29] , or for car network communication application [33] , or using glass as substrate with AZO/AgNWs for Bluetooth communication [44] , or using glass as substrate with AgHT-8 for WLAN [19] and wireless applications [20] , or using glass as substrate with AgHT-4 for Wi-Fi [26] , or using a plexiglass substrate with AgHT-8 for wireless multiple-input and multiple output (MIMO) system [21] and smart devices [24] , or using a polyimide as substrate with TIO Terahertz communication [41] and satellites , radar systems [42] , and using a MWCNT loaded ITO and TIO for Terahertz communication [35] , and using a borosilicate glass substrate with FTO [37] or Pyrex glass substrate with FTO [38] for outdoor applications such as transparent antenna over solar cells , and using a Polyethylene Terephthalate (PET) substrate with AgHT-8 thin film for (RFID) tags [22] and UWB home entertainment network [17] , commercial and medical applications [40] , and using a sapphire substrate with gallium-doped zinc oxide (GZO) thin film for smart city concept [7] , and using a quartz substrate with graphene layers for practical applications [45] , or using Perspex acrylic dielectric substrate with (AgHT-8) thin film for wireless applications [23] , or using a glass substrates with ITO films for millimeter wave bands [30] , or using a plexiglass substrate with AgHT-8 short range multiband versatile wireless applications [28]. And can be as Transparent and Flexible Antennas using glass or polymer as substrate with AZO for window-integrated wireless sensor node [39] , or using a polyimide as substrate with IZTO/Ag/IZTO (IAI) for wearable glasses [46] and using polyamide substrate for computer laptop [3] , or using a Polyethylene Terephthalate (PET) substrate with transparent silver nanowire (AgNWs) for automobile window, liquid crystal display, organi...…”

“…Most of the challenges in this area, which revolve around gain, efficiency, and radiation parameters of transparent antenna, are classified into three categories: materials, design, and position of the antenna. In light of materials category, the fabricated graphene antenna gain and radiation patterns have yet to be identified, while the graphene antenna is yet to be proven for its function as a halfwavelength dipole antenna [45]. Transparent antenna made of AgHT-8 suffered from low gain [87].…”

Electrochemical Characterization of CVD-Grown Graphene for Designing Electrode/Biomolecule Interfaces

“…Finally, nickel (10 nm) and gold (50 nm) layers were successively evaporated at the side position of the transferred graphene film as the electrical contact for the electrochemical measurements. Our typical CVD-grown graphene prepared in this process has a sheet resistance in the ranges of 700-1200 Ω/sq [21].…”