Phased-Array Antenna Beam Squinting Related to Frequency Dependency of Delay Circuits

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...

Photonic true time delay beamformer demonstrator for a radio astronomical array antenna