In this paper we present the design and analysis of Ka band array fed reflector antenna for satellite communication links. The design consists of curved reflector geometry of 0.8 m which is fed with five element linear array antenna operating at 20.2 GHz (Ka band). As satellite applications demand beam-steering with higher gain and narrow beam, we use and analyze electromechanical beam-steering, i.e. electronic and mechanical steering (Hybrid beam-steering), through array fed reflectors. To ensure good scanning capabilities the feed array is configured in horizontal as well as in vertical directions. A 2-D scanning of ±6 o is achieved when the feed element is placed horizontally in focal plane whereas ±3 o when the feed element is placed vertically in focal plane with the proposed array fed reflector. The proposed antenna maintains a constant performance throughout the scanning range which helps vehicular tracking and many other satellite applications.
As beam steering antennas are being an ideal solution for many satellite applications, this paper is concerned on the design of a 16-element linear array antenna, using an RT Duroid substrate at 20.2 GHz for Ka-Band satellite communications. The design is initiated with single element and thereby incremented in steps to 2, 4, 8 and 16 elements. An optimum inter element spacing of 0.73λ is considered for the purpose of fulfilling the desired scanning requirement. Performance analysis of the proposed antenna is analyzed mainly in terms of Relative Side Lobe level (RSLL) and Beam steering. To synthesize the antenna, weights of the antenna are considered according to Taylor's amplitude distribution along the antenna aperture to attain a relative side lobe level of -25dB. The proposed 16element linear array antenna achieved a maximum gain of 19.5dB and the main beam direction can be switched up to 50 o (±25 o ) without introduction any grating lobes. In addition to, other relevant antenna parameters such as reflection coefficient, VSWR, gain and efficiency of single, 2, 4, 8 and 16 element antennas are compared. The proposed linear array antenna is designed using Ansoft HFSS.
The ANSI-based circular microstrip patch antenna is designed to work at 7.4GHz and 12GHz using HFSS simulator software for various WLN (Wireless Local Area Network) applications, Bluetooth, and IoT communications. The circular patch antenna is made using FR4, which is 4.4 KE, 1.6 mm high, and has a gain of 3 dB. It tests countless antenna features such as return loss, radiation adjustment, bandwidth, directivity, antenna gain, and radiation productivity.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.