Title
Phased-Array Antenna Beam Squinting Related to Frequency Dependency of Delay Circuits
Author
Garakoui, S.K.
Klumperink, E.A.M.
Nauta, B.
van Vliet, F.E.
Publication year
2011
Abstract
Practical time delay circuits do not have a perfectly linear phase-frequency characteristic. When these delay circuits are applied in a phased-array system, this frequency dependency shows up as a frequency dependent beam direction (“beam squinting”). This paper quantifies beam squinting for a linear one-dimensional phased array with equally spaced antenna elements. The analysis is based on a (frequency-dependent) linear approximation of the phase transfer function of the delay circuit. The resulting relation turns out to be invariant for cascaded cells. Also a method is presented to design time-delay circuits to meet a maximum phased-array beam squinting requirement.
Subject
Physics & Electronics
RT - Radar Technology
TS - Technical Sciences
Physics
Phased-arraysBeam-forming Beam squint Beam pointing Analog delay True time delay Phase-shifter
To reference this document use:
http://resolver.tudelft.nl/uuid:22792632-b548-486a-8bf5-c3fbeffe30fd
TNO identifier
441916
Source
14th European Microwave Week 2011, EuMW2011: Wave to the future - Proceedings of 41st European Microwave Conference, EuMC 2011, 9-14 October 2011, Manchester, UK, 1304-1307
Document type
conference paper