A substrate integrated waveguide leaky wave antenna radiating from a slot in the broad wall

SIW leaky wave antennas

“…An SIW LWA radiating from a longitudinal slot etched in the upper wide wall was designed and fabricated [4]. The antenna is fed through a microstrip line, Fig.…”

“…The Rogers 4350B substrate with h = 0.508 mm in thickness with relative permittivity  r = 3.48 and loss factor tan = 0.0037 was used. To get the maximum radiation in the frequency band around 19 GHz we chose according to the dispersion characteristics calculated in [4,13] SIW width 9 mm and slot width 5 mm. The chosen antenna length was 100 mm, measured along the slot with the full width, see Fig.…”

“…This antenna radiates energy through the SIW side wall with sparsely located shortening vias. The concept of an LWA based on radiation through the wide slot in the SIW top wall due to a leaky wave of the first order was proposed in [4]. The SIW designed as a composite right/left-handed (CRLH) transmission line was used as an LWA able to steer the radiation pattern main beam by changing the frequency from nearly backward direction to forward direction [5,6].…”

“…The structure was designed on the basis of a circuit model that predicts its behavior. This paper summarizes the results of SIW LWA research done by the author and published namely in [4,8,9]. The aim is to design antennas with a planar structure that can be integrated simply with transmitter/receiver circuits and can easily be mounted on surfaces of large bodies without deteriorating their shapes.…”

Leaky wave antennas designed on a substrate integrated waveguide

“…This antenna radiates energy through the SIW side wall with sparsely located shortening vias. The concept of an L W A based on radiation through the wide slot in the SIW top wall due to a leaky wave of the first order was proposed in [5]. The SIW designed as a balanced right/left-handed (CRLH) transmission line was used as an L W A able to steer the radiation pattern main beam by changing the frequency from nearly backward direction to forward direction [6,7].…”