Signal Processing for Communication Systems
Why an array’s pattern equals element pattern times array factor, with a worked example, 3GPP element, scan loss, Taylor and Chebyshev tapers, and Python and Matlab code.
Grating lobes in electronic scanning: the spacing / scan-angle condition that creates false main beams, and design rules to keep them out of visible space.
Articles in this series Phased array antenna — an introduction Electronic scanning arrays (this article) Grating lobes in electronic scanning Array pattern multiplication Introduction Suppose the antenna cannot move — a radar on a mast, a panel on a tower — but you still need the beam to point somewhere else. That is electronic scanning: … Read more
Articles in this series Phased array antenna — an introduction (this article) Electronic scanning arrays Grating lobes in electronic scanning Array pattern multiplication Introduction Suppose you need a radar beam that jumps from one track to another in a few microseconds, or a base-station panel that must serve users across a sector without swinging a … Read more