Therefore, we proposed the double-loop antenna for miniaturization and generating a localized heating to adapt microwave energy device for robotic surgery. The double-loop antenna consists of a double-loop and rod for changing the total antenna length. In order to evaluate the heating characteristics...
The boundary value solution of electromagnetic radiation from an axis-asymmetric slot antenna on a perfectly conducting prolate spheroid coated with a confocal sheath is presented. The electromagnetic fields are expanded in terms of prolate spheroidal vector wave functions. The unknown expansion ...
Antenna ArrayIn this paper, we present the results of statistical analysis of the characteristics of an adaptive antenna array tuned by the Hebb algorithm with allowance for the weight-vector fluctuations in the case where signals with different levels of autocorrelatedness of the input-signal read...
We certainly hope that the bandwidth of an antenna can cover a certain range, preferably the entire FM broadcast band we are listening to. Otherwise, it would be too much trouble to change the antenna or adjust the antenna. The bandwidth of the antenna is related to the type, structure ...
As the size of an antenna decreases, its Q factor increases. In this paper, we focus on the transient aspects of high-Q radiators and present a comprehensive investigation on the time-domain behavior of resonant-type antennas. The concept of energy storage and its connection with size and Q...
Simulation and measured result of the proposed antenna are in good agreement.doi:10.2528/PIERC12052310Karmakar, AnirbanVerma, ShashankPal, ManimalaGhatak, Rowdra,31,(2012)Karmakar A., Verma S., Pal M. and Ghatak R., 2012. "An Ultra Wideband Monopole Antenna with Multiple Fractal Slots with...
The important thing is to have an understanding of the general characteristics of each antenna type to facilitate informed decisions regarding model selection and utilization for each specific application. To stay updated about this and other educational content, subscribe to our email listhere. ...
To measure the VSWR of an antenna we will use the directional coupler in reverse. Here we connect the noise source to the output of the coupler, the antenna to the input of the coupler and the RTL-SDR dongle to the coupling (CPL) port of the coupler. This way power ...
Full manipulations of all fundamental EM-wave properties Our UMA consists of an array of subwavelength anisotropic meta-atoms on top of a waveguiding structure (Fig. 1a). In this work, we consider the metasurface antenna operating at microwave frequencies and utilize the positive-intrinsic-negative ...
ments in a centimeter scale must include instrumentation to measure the relative position of the antenna coils with an accuracy of 1/10mm. Furthermore the antenna separation distance should be as large as possible in order to increase the measured ratio of secondary to primary magnetic field ...