Abstract There is described a multiband antenna system for operating at L-band, S-band and UHF-band comprising L-band antenna elements (1) and S-band antenna elements (2) provided in the form of quadrifilar helices spaced from each other on the surface of a hollow cylindrical insulator (4); UHF band antenna elements (3) provided in the form of a cage dipole on the surface of the said hollow cylindrical insulator (4); the L-band antenna input being connected to a first connector (5) through an L-band feed network card (8); the S-band antenna input being connected to a second connector (6) through an S-band feed network card (9) and the UHF-band antenna input being connected to a third connector (7) through a split sheath balun (10) provided along the axis of the said hollow cylindrical insulator (4).
A multiband antenna system for operating at L-band, S-band and UHF-band comprising L-band antenna elements (1) and S-band antenna elements (2) provided in the form of quadrifilar helices spaced from each other on the surface of a hollow cylindrical insulator (4); UHF band antenna elements (3) provided in the form of a cage dipole on the surface of the said hollow cylindrical insulator (4); the L-band antenna input being connected to a first connector (5) through an L-band feed network card (8); the S-band antenna input being connected to a second connector (6) through an S-band feed network card (9) and the UHF-band antenna input being connected to a third connector (7) through a split sheath balun (10) provided along the axis of the said hollow cylindrical insulator (4).
Claim 2
Dependent Claim
24 words
The multiband antenna system as claimed in claim 1 wherein the said antenna elements and the said feed networks are enclosed in a radome.
Claim 3
Dependent Claim
33 words
The multiband antenna system as claimed in claim 1 wherein the L-band, S-band and UHF-band antenna inputs are connected to first, second and third connectors respectively by means of semi rigid coaxial cables.