Abstract
A grid array antenna (GAA) is a kind of planar array antenna. It consists of multiple rectangular loops. The length of the long side of each loop is usually one guided wavelength, while the short side is half as long. The long side of each loop works as a transmission line, while the short side works both as a transmission line and as a radiating element. Other aliases and derivatives of GAA can also be found, such as honeycomb wire antenna, chain antenna, brick wall antenna, and mesh array antenna. By different array arrangement and feeding scheme, the GAA can flexibly function either as a traveling‐wave or non–traveling‐wave antenna. Because the separation between radiating elements is fixed by dimensions of the loop, the GAA does not have much flexibility for aperture tapering when the side lobe level is of principal consideration. The GAA was invented by J. Kraus in 1964 (1). Since then, there have been no more than 70 papers available on GAA‐related topics, most of which have focused on the application aspects, leaving open a large gap for study of GAA analysis and synthesis.
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