A dual band antenna configuration comprising: a waveguide having a tapering structure, said waveguide extending from a proximal section via a low frequency band orthomode section and a high frequency band matching section to a high frequency band orthomode section; a first high frequency band port extending from said high frequency band orthomode section of said waveguide; a first low frequency band port, extending from an outer surface of the low frequency band orthomode section of said waveguide, along a first radial path; a second low frequency band port, extending from said outer surface of said low frequency band orthomode section of said waveguide, along a second radial path, said second radial path being orthogonal to said first radial path; and a 180 degree hybrid coupler, wherein a first port of said 180 degree hybrid coupler is in electrical communication with said first low frequency band port and a second port of said 180 degree hybrid coupler, different than said first port thereof, is in electrical communication with said second low frequency band port; characterized in that said tapering structure of the waveguide comprises the low frequency band orthomode section gradually tapering from a proximal end in contact with the proximal section to a distal end in contact with the high frequency band matching section, and the high frequency band matching section gradually tapering from a proximal end in contact with the low frequency band orthomode section to a distal end in contact with the high frequency band orthomode section such that the waveguide tapers from said proximal section to said high frequency band orthomode section. a waveguide having a tapering structure, said waveguide extending from a proximal section via a low frequency band orthomode section and a high frequency band matching section to a high frequency band orthomode section; a first high frequency band port extending from said high frequency band orthomode section of said waveguide; a first low frequency band port, extending from an outer surface of the low frequency band orthomode section of said waveguide, along a first radial path; a second low frequency band port, extending from said outer surface of said low frequency band orthomode section of said waveguide, along a second radial path, said second radial path being orthogonal to said first radial path; and a 180 degree hybrid coupler, wherein a first port of said 180 degree hybrid coupler is in electrical communication with said first low frequency band port and a second port of said 180 degree hybrid coupler, different than said first port thereof, is in electrical communication with said second low frequency band port; characterized in that said tapering structure of the waveguide comprises the low frequency band orthomode section gradually tapering from a proximal end in contact with the proximal section to a distal end in contact with the high frequency band matching section, and the high frequency band matching section gradually tapering from a proximal end in contact with the low frequency band orthomode section to a distal end in contact with the high frequency band orthomode section such that the waveguide tapers from said proximal section to said high frequency band orthomode section.