| 摘要 |
FIELD: radio engineering; radio direction finding and radio communication systems. ^ SUBSTANCE: proposed highly directive annular phased antenna array has N identical nondirectional antennas, N-channel controlled phase shifter, and adder. Array antennas are equidistantly disposed over circumference with radius R0 affording short admissible width of synthesized directivity pattern main lobe at maximal operating-band wavelength and at equal angular pitch relative to array center. Number of antennas is chosen from formula N = 4l + 2, where l =1, 2, 3, ... are integer numbers other than zero. Distances chosen between array center and phase centers of antennas compared with radius R for array antennas bearing odd sequence numbers are enhanced and for array antennas bearing even sequence numbers, reduced. ^ EFFECT: reduced level of synthesized directivity pattern side lobes, in average twice as broad operating band of antenna array. ^ 1 cl, 30 dwg, 2 tbl |
