A new leaky wave antenna for millimeter waves using an asymmetric strip in groove guide, Part II: Design considerations

Part I of this pair of companion papers describes a new type of leaky wave antenna for millimeter wavelengths and presents derivations of the parameters of the transverse equivalent network that accurately characterizes its leaky wave behavior. From a resonance of this transverse equivalent network, one obtains a dispersion relation in closed form from which numerical values of the leaky wave behavior have been obtained. Part II begins with this dispersion relation and a brief discussion of the numerical procedure employed. The relations between these leaky wave properties and the design of leaky wave antennas form the main concern of Part II. In this context, design aspects are discussed, including optimization considerations and the fact that they are frequency independent, and then a variety of numerical results are presented, together with their relevance to leaky wave antenna performance. It is seen that this antenna is capable of systematic design and is versatile with respect to the scan angle and beamwidth of the radiation.