Active aperture-coupled leaky-wave antenna

Abstract

the theoretical results of Fig. 2 of [I] show that for LJ =-I 2pm, there are two values of L, at which minimum second-harmonic distortion can be achieved. This cannot be predicted from eqn. 7. Furthermore, for M,, = O S the approximation of the term (d(l-mJ d(l+mJ) using eqn. 6 results in an error of the order of' 3.5%. Such an error cannot reliably yield harmonic distortions of the order of-81dB. It appears, therefore, that eqn. 6 of [l] the harmonic performance of the second cell.

An aperture-coupled linear microstrip leaky-wave antenna array with two-dimensional dual-beam scanning capability

“…No complicated feeding networks or transition circuits are required here. This type of feeding structure has successfully being used for the excitation of LWA [10]. In addition, it is straightforward to obtain a dual-beam radiation pattern by feeding a microstrip leaky-wave antenna at its center.…”