Dual Frequency Reflectarray Cell Using Split-ring Elements with RF MEMS Switches

Analysis and design of cylindrically conformal microstrip antennas Taşoğlu, Ali Özgür; Dural Ünver, Mevlüde Gülbin; Department of Electrical and Electronics Engineering (2011) Cylindrically conformal microstrip antennas are investigated. Two different structures, namely proximity coupled and E-shaped microstrip antennas are analyzed and information about the design parameters is obtained by means of parametric study. With these structures, cylindrical arrays, having omnidirectional radiation in the circumferential plane of the cylinder, are designed. Proximity coupled cylindrical arrays operate in the 2.3-2.4 GHz aeronautical telemetry band with approximately 4% bandwidth. On the...
Dual Band PIFA Design For Biomedical Applications ALPTEKİN, DAMLA; Alatan, Lale; Gençer, Nevzat Güneri (2016-04-15) In this study, numerical and experimental analysis of a dual band (Medical Implant Communications Service-MICS; 402-405 MHz, Industrial, Scientific and Medical-ISM; 2.4-2.48 GHz) implantable antenna design for biomedical applications are presented. The proposed antenna is in the type of stacked Planar Inverted-F Antenna (PIFA) covered with a superstrate. The antenna has a size of 2 cm x 1 cm x 3.81 mm. Numerical analysis of the implant antenna is carried out using High Frequency Structure Simulator (HFSS) s...
Dual-frequency reconfigurable slot dipole array with a CPW-based feed network using RF MEMS technology for X- and Ka-band applications Topalli, Kagan; Aydın Çivi, Hatice Özlem; Demir, Şimşek; Koç, Seyit Sencer; Akın, Tayfun (2007-06-15) In recent years there is a growing interest to combine various wireless applications in a single system for miniaturization purposes. A reconfigurable MEMS antenna that can operate in multi- frequencies is an appropriate way of reducing system volume. The monolithic integration of tunable MEMS components with antennas can also reduce parasitic effects, the losses, and packaging costs. Moreover an array of these types of antennas can offer solutions for the systems requiring high antenna gains. This paper pr...
Wideband omnidirectional and sector coverage antenna arrays for base stations Alatan, Lale (2018-01-01) By using parallel strip line fed printed dipole antennas as array elements, an omnidirectional antenna array and a wide angle sector coverage array operating in octave band are designed. A maximum deviation of ±1.25 dB from the omnidirectional pattern is achieved for the omnidirectional array, and the average gain of the antenna was measured as being 5 dB in the 1.35–2.7GHz band. For the sector coverage array, a special reflector design is utilized to maintain a half power beam width of around 115◦ with a s...
Dual frequency bi-orthogonally polarized antenna for GPS applications Alatan, Lale; Mahale, A; Balasubramanian, A; Olin, RP (2000-01-01) Design, fabrication and testing of dual frequency bi-orthogonally polarized microstrip patch antenna structures for GPS receivers are studied. The considered configurations include orthogonally placed coplanar rectangular patches, orthogonally stacked rectangular patches and stacked square patches. Designed antennas are fabricated according to the optimized parameters, tuned in the presence of radomes and then measured for their bandwidth, input matching, radiation pattern, gain, and polarization characteri...

Citation Formats

C. Guclu, J. Perruisseau-Carrier, and H. Ö. Aydın Çivi, “Dual Frequency Reflectarray Cell Using Split-ring Elements with RF MEMS Switches,” 2010, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/53744.