Radiation beam scanning for leaky wave antenna by using slots

Abstract

This paper provides an insight of a new, microstrip leaky wave antenna. It holds the ability to continue steer its beam at a swapping frequency. This is done with acceptable impedance matching while scanning and very little gain variation. Investigation is carried out on LWAs' control radiation pattern in steps at a band frequency via vertical and horizontal slots. The enhancement is realized by etching horizontal and vertical slots on the radiation element. This study also presents a novel half-width microstrip leaky wave antenna (LWA). The antenna is made up of the following basic structures group's vertical and horizontal slots. The reactance profile at the microstrip's free edge and thus the main beam direction is changed once the control-cell states are changed. The radiation pattern direction changes by sweeping the operating frequency between 4 GHz to 6 GHz.The main beam may be directed by the antenna between 15 o and 55 o. C band achieved the measured peak gain of the antenna of 10 dBi at 4.3 GHz beam scanning range.

A Miniaturized Printed Circuit CRLH Antenna-based Hilbert Metamaterial Array

“…The transition from negative to positive occurs at the same resonant frequency, thus providing a balanced CRLH. In [17], a new half-width LWA was presented in this work; it had the ability to continue directing the main lobe with a swap frequency; through the introduction of vertical and horizontal slots within the radiation element, the operating frequency was swept between 4 to 6 GHz with a maximum gain of 10 dBi at 4.3 GHz. In [18], an antenna was manufactured using CRLH MTM technology to increase the impedance bandwidth without affecting the antenna size, with frequencies ranging from 850 MHz to 7.90 GHz.…”

Barium titanate–silicon elastomer based body coupled antenna for wearable microwave head imaging applications

“…Polyethylene terephthalate (PET) substrate is also utilized for antenna design to overcome this limitation [9]. Different types of antennas have been investigated for biomedical imaging applications such as 3-D compact patch antenna [10], e t-slot shaped rectangular patch [11], microstrip leaky wave antenna (LWA) microstrip [12], patch antenna with defective ground structure (DGS) [13], wideband monopole antenna [14], [15], and antipodal Vivaldi antenna [16]. A study in [6] described a microwave head imaging system that sends and collects backscattered signals using an array of antennas on a realistic head phantom.…”