Abstract. Results of a research of phase-frequency
scanning in the radio-objective representing the focused array of leaky wave waveguides
with variable distance between slots along waveguide are given. Scanning of a
focused radiation in a Fresnel zone of the array is carried out in two
directions: in the plane formed by the waveguide axis and the normal to the
array due to change of frequency and crosswise - due to change of a phase shift
between the next waveguides of the array. Emergence and positions of the
interference maxima of the array radiation are investigated. Comparison to scanning
characteristics of periodic arrays is carried out.
Keywords: leaky wave antenna, slotted waveguide
array, focusing in a Fresnel zone, phase-frequency scanning.
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