DOUBLE-FREQUENCY, BIPOLAR VIBRATOR-VIBRATOR ANTENNA ARRAY (AA) OF WIDE-ANGLE SCANNING WITH INCREASED NOISE-IMMUNITY OF METRE RANGE ANTENNA Russian patent published in 2010 - IPC H01Q21/26 

FIELD: radio engineering.

SUBSTANCE: invention may be used to develop double-frequency, bipolar phased antenna arrays of wide-angle scanning for reception/transfer of signals in metre and decimetre range of frequencies of various polarisation in wide spectrum of angles. Design of this combined antenna consists of modules containing antenna arrays from cross-vibrators with various dimension types for metre and decimetre ranges arranged in triangular grids calculated to maintain wide-angle capacity of beam swinging, with establishment of distances between columns of cross-vibrators of each range equal to d_x(1.2)=0.45λ_0(1.2) and between lines d_y(1.2)=0.32λ_0(1.2), where λ_0(1.2) - average length of wave in working range of metre or decimetre range antenna accordingly, besides, areas of decimetre range cross-vibrators location do not comply with areas of metre range cross-vibrators installation. Moreover, low-pass filter is inbuilt into design of metre range antenna cross-vibrator. Parametres of filter are selected so that it transmits frequencies of metre range antenna working range practically without losses and suppresses frequencies outside working range and on higher harmonics. Filter is inbuilt into feeding stand of cross-vibrator and represents coaxial line with central conductor of alternating diametre. Configuration of central conductor is determined by required characteristics of the filter. As a result, cross-vibrator of metre range represents united design with filter.

EFFECT: minimisation of HF-range radiators effect at DN and matching in LF-range, which provides for noise-immunity of metre range antenna, wide-angle capacity of scanning and reduced time for tuning for coordination in the whole coverage sector.

2 cl, 14 dwg