| 摘要 |
FIELD: microwave engineering; radar stations, satellite television, communications, and other radio systems. ^ SUBSTANCE: proposed method for microwave signal polarization conversion involves passage of right- and left-hand circularly polarized microwave signals and linearly polarized microwave signal having arbitrary position of polarization plane through waveguide ferrite section with double-pole cross control magnetic field. This field is built up by two-phase winding carrying dc currents in each coil, spatial axis of coils of one phase winding being perpendicular to that of coils of other phase winding. Then right- and left-hand circularly polarized microwave signals and linearly polarized microwave signal with arbitrary position of polarization plane are converted into linearly polarized microwave signal with desired position of polarization plane. Proposed method is characterized in that current value is varied during conversion of microwave signal polarization in one phase winding in proportion to sine of angle between 0 and 180 deg. simultaneously with variation of current value in other phase winding in proportion to cosine of same angle at similar maximal values of these currents and, irrespective of this fact, currents through both phase windings are relatively changed by same value in changing type of polarization of right- and left-hand circularly polarized microwave signals and linearly polarized microwave signal. ^ EFFECT: reduced loss of microwave signal due to reduced polarization loss. ^ 1 cl, 1 dwg |
