Design of magneto-electric dipole antenna for wideband communication systems

Download
2018
Alparslan, Semih
This thesis includes the design, simulation, production and measurement of a differential fed magneto-electric dipole antenna with cavity operating at ultrawideband (3.3 GHz – 10 GHz). This antenna consists of a differential feeding structure, an electric dipole, a magnetic dipole and a cavity. The ultra-wideband operation is achieved through the use of differential feeding structure and cavity. A step-by-step procedure is followed during the design process of the differential fed magneto-electric dipole antenna with cavity. First, a gamma-shaped strip fed magneto-electric dipole antenna is designed to study the effects of the antenna parameters on the return loss and the characteristics of the antenna gain. These parametric analyses are done in Ansys HFSS, a high frequency electromagnetic field simulation program. By the help of the experience gained through these parametric analyses, a differential fed magneto-electric dipole antenna is designed and simulated. Then, in order to achieve design requirements a cavity is incorporated into the design. vi Finally, the designed differential fed magneto-electric dipole antenna with cavity is manufactured, measured, and its performance is compared with simulation results.

Suggestions

Development of a pc numerical system for high voltage sphere gap control
Kasap, Onur; Hızal, Mirzahan; Department of Electrical and Electronics Engineering (2005)
In this thesis, a high precision motion and position control system has been developed and applied to a high voltage sphere gap control and measurement system. The system is able to support up to 3-axes position and motion control. The control system includes a microcontroller card, three DC servo motor driver cards and a data storage unit. To provide communication between computer and motion control system, the Universal Serial Bus (USB) port is used. The microcontroller card is equipped with an USB interf...
Design of a Printed Yagi Array Antenna with Additional Director Element for Broadband Radar Applications
Atabay, B.; Dural, G. (2019-01-01)
In this paper, design, simulation, production and measurement of a coplanar broad-band microstrip antenna printed on an alumina ceramic substrate is presented. Antenna may be used as an element in a radar applications operating at X-band (8 GHz-12 GHz). The antenna driven system consists of one more directors because of the requirements of directivity. The reason of using high dielectric substrates the antenna can be printed on very small spaces. Antenna in Package structure's temperatures rising up rapidly...
Monopulse wideband waveguide based travelling wave array antenna
Gültepe, Gökhan; Aydın Çivi, Hatice Özlem; Department of Electrical and Electronics Engineering (2017)
A novel, travelling-wave, waveguide-based antenna array structure with dual-plane monopulse capability is developed. It is an end-fed, broad wall longitudinal slotted, ridged waveguide-based printed antenna array. Even if the structure is scalable, it is designed to operate in S-band. The structure consists of printed antennas on two interleaved waveguide arrays whose dimensions are shrinked to make interleaving operation possible to keep inter-element spacings the same in both the azimuth and elevation pla...
Theoretical investigation and design of wideband dielectric resonator antennas
Yüksel, Yılmaz Çağrı; Alatan, Lale; Department of Electrical and Electronics Engineering (2015)
The aim of this thesis is to utilize Dielectric Resonator Antennas (DRA) as array elements due to their advantages over other conventional antenna elements such as dipoles and microstrip patches. Depending on both the excitation mechanisms and the antenna shape, a Dielectric Resonator Antenna (DRA) provides its designer multiple independent degrees of freedom. In this thesis three antenna shapes, namely hemispherical, cylindrical and rectangular DRAs, are investigated. The cylindrical and the rectangular sh...
Design of asymmetric coplanar strip folded dipole antennas /
Karaciğer, Kamil; Alatan, Lale; Department of Electrical and Electronics Engineering (2014)
This thesis includes the design, simulation, production and measurement of an asymmetric coplanar strip folded dipole antenna suitable to be used as an element in a linear array operating at S-band (2.7 GHz - 3.3 GHz). In this same manner, its usefulness as an array antenna is also explored in this thesis. This antenna element consists of a microstrip line feed, microstrip to coplanar stripline transition (BALUN) and asymmetric coplanar strip (ACPS) folded dipole. The planar folded dipole can be constructed...
Citation Formats
S. Alparslan, “Design of magneto-electric dipole antenna for wideband communication systems,” M.S. - Master of Science, Middle East Technical University, 2018.