In this paper a new kind of coupled lines called circular symmetric coupled microstrip transmission lines is introduced. At first the capacitance C and inductance L matrices of this kind of microstrip lines are determined by solving the laplace’s equation using fourier More
In this paper a new kind of coupled lines called circular symmetric coupled microstrip transmission lines is introduced. At first the capacitance C and inductance L matrices of this kind of microstrip lines are determined by solving the laplace’s equation using fourier series method. Then by some examples the capacitance C and inductance L matrices of this kind of microstrip lines are discussed
Manuscript profile
In this paper, TEM horn antennas are reviewed as an ultra wideband antennas and then analyzed theoretically. The far zone fields, radiation patterns, directivity, and bandwidth of these antennas are determined. Also, the characteristic impedance and input reflection coe More
In this paper, TEM horn antennas are reviewed as an ultra wideband antennas and then analyzed theoretically. The far zone fields, radiation patterns, directivity, and bandwidth of these antennas are determined. Also, the characteristic impedance and input reflection coefficient of these antennas are determined using the taperd transmission lines model. Then some relations are introduced to optimum design of these antennas. Finally, two TEM horn antennas are designed and then are simulated, fabricated, and measured in an experiment.
Manuscript profile
In this paper, a pen-shaped antenna, called Vlasov antenna, is introduced. This antenna has a simple structure and can be constructed by creating a slant at the end of a circular waveguide. The main property of this antenna is its suitable radiation by excitation of som More
In this paper, a pen-shaped antenna, called Vlasov antenna, is introduced. This antenna has a simple structure and can be constructed by creating a slant at the end of a circular waveguide. The main property of this antenna is its suitable radiation by excitation of some modes such as TM01, which are symmetrical. The analysis of the antenna is done qualitatively and then the manner of its design is introduced. A pen-shaped antenna is designed in the X band and then is simulated, fabricated, and its performance is measured.
Manuscript profile
