In this article, an ultra-wideband antenna has been presented for medical applications which have a resonant frequency of 10.35GHz and offers a bandwidth of 1400MHz with a return loss of -19db. The presented antenna is low-cost lightweight and can easily be integrated inside the circuit. As this antenna is designed for medical applications its size is compact and is fed utilizing a coaxial feeding technique which is especially plentiful for operative radiotherapy applications. The designed antenna is rectangular and covers an overall size of 24x12mm with a thickness of 1mm. The proposed antenna is designed using CST studio as a simulation tool, the extracted results of important parameters like return loss, surface current, reference impedance, and far-field have achieved remarkable results which are illustrated in the article. which makes it suitable for radiotherapy. A high epsilon valued ε r = 4.8, tan δ = 0.02 substrate GT-008 has been employed as a dielectric material whereas copper is being used for the ground and radiating patches. The performance of the antenna in the X-band is satisfactory which makes it suitable for radiotherapy.
A novel multiband stepped impedance resonator (SIR) based microstrip antenna is presented in this paper. The presented antenna is explicitly designed to overcome the multistandard requirements of future wireless communication systems. The antenna contains six radiating patches, occupies a volume of 85x50x1.574mm. The antenna contains three shortcircuited dual band SIR radiating patches. The SIR radiating patches are optimized to operate at the specified frequency bands of 0.9GHz, 1.2GHz, 1.5GHz, 2.5GHz, 2.75GHz, and 3.65 GHz. The SIR radiating patches are fed using a single coaxial feeding technique which shows a good matching of 50 Ohm. In stepped impedance technique; of three resonators one of the radiating patches is short circuited with a ground. The simulated results of reflection coefficient, impedance matching, and peak gains show stable responses and are acceptable. Antenna is designed using FR-4 as a substrate whereas; CST studio and MATLAB are utilized as simulation tool. The proposed antenna verifies to be a suitable candidate for small mobile devices and other multi-standard wireless communication devices.
5G is supposed to be the solution of issues the current cellular network is facing like low data speed and higher latency, as the number of users comes online 4G and LTE gets unable to handle users. To enable a 5G compact size microstrip patch antenna plays an important role. A microstrip patch antenna array is being proposed in this paper which consists of six radiating patches and is fed using a microstrip line feeding technique. ROGER 3003 is employed as a dielectric material because of its advance and environmentfriendly features which makes it suitable for the application of 5G and B5G.The designed antenna is evaluated based on its resonating frequency at 28.8GHz with a -10 dB impedance bandwidth of 1GHz. The antenna if offering a high gain of 9.19dBi. impedance and radiation coverage with a compact antenna array having low cost makes it to be a suitable candidate for 5G and beyond communication applications.
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