Antenna arrays comprising planar combiner networks. An apparatus includes a first antenna component comprising a first multiplexer and a second antenna component comprising a second multiplexer. The apparatus is such that the first antenna component is located next to the second antenna component within an antenna array and the apparatus is disposed within a lattice spacing of the antenna array.

Provided is a dual-band multimode antenna feed for a high-frequency band and a low-frequency band. The feed includes four high-frequency waveguide ports, where each high-frequency waveguide port is connected to a respective high-frequency input/output waveguide. Each high-frequency input/output waveguide includes a high-frequency waveguide aperture facing a first section for mixing electromagnetic modes in the E-plane. The first section is connected to a second section for mixing electromagnetic modes in the H-plane. The feed further includes a low-frequency waveguide port connected to a low-frequency input/output waveguide. A filter is arranged inside the first section to be transparent for plane wave modes exhibited at lower frequencies and reflecting for plane wave modes exhibited at higher frequencies.

A wireless transmission system comprising a main circuit board having a first controller and a first connector assembly associated therewith; a removable and replaceable radio frequency module for transmitting and receiving wireless data, wherein the radio frequency module includes a second controller, a first module connector assembly, and a second connector assembly that is configured to couple to the first connector assembly; a removable and replaceable diplexer module for sending and receiving the wireless data at different frequencies, wherein the diplexer module includes a storage element, a first waveguide port connector, and a second module connector assembly that is configured to couple to the first module connector assembly; and a transition waveguide module having a second waveguide port connector that is configured to couple to the first waveguide port connector.

A radiofrequency exciter comprises a junction including an axial access intended to be connected to a horn antenna, at least four lateral accesses and at least four frequency filters that are associated with the four lateral accesses, respectively, the junction including, in series, a first coupling cavity equipped with two coupling slots that are able to sample a vertical polarization, and a second coupling cavity equipped with two coupling slots that are able to sample a horizontal polarization, the four frequency filters being connected directly to the four respective coupling slots, the first coupling cavity having a transverse cross-section having a constant vertical dimension and a horizontal dimension that decreases between the axial access and a transverse exit aperture of the first coupling cavity.

An orthomode junction for separating and/or combining orthogonally-polarized radiofrequency wave signals, comprises a body which has a main cavity forming a main waveguide, which has a blind end, and auxiliary cavities forming auxiliary waveguides, which communicate laterally with the main cavity in the vicinity of the blind end thereof, and a deflection insert situated at the blind end of the main cavity and facing the auxiliary cavities, the deflection insert having different shapes on the side of the auxiliary cavities respectively.

A multiport waveguide device is disclosed herein. In an embodiment, a multiport waveguide device includes a first receiving port structure configured to guide a first incoming RF signal, a second receiving port structure configured to guide a second incoming RF signal, a first transmitting port structure configured to guide a first outgoing RF signal, and a second transmitting port structure configured to guide a second outgoing RF signal. The multiport waveguide device also includes common port structure configured to simultaneously guide the first incoming RF signal, the second incoming RF signal, the first outgoing RF signal, and the second outgoing RF signal through a common port.

A diplexer for an antenna comprises a first waveguide operative in a first frequency range, a second waveguide operative in a second higher frequency range, a third waveguide operative in the first frequency range, a transmission device comprising at least three electric conductors, in which at least one of (i) or (ii) is met: (i) the transmission device is operative to receive electromagnetic radiations with at least one type of polarization and in the first frequency range from the third waveguide and to transmit electromagnetic radiations with said type of polarization and in the first frequency range to the first waveguide; (ii) the transmission device is operative to receive electromagnetic radiations with at least one type of polarization and in the first frequency range from the first waveguide and to transmit electromagnetic radiations with said type of polarization and in the first frequency range to the third waveguide.

Disclosed is a shaped horn in conjunction with a dielectric tube for enhanced aperture directivity that can achieve a near optimum efficiency. The shaped horn provides additional mode control to provide an improved off-axis cross-polarization response. The horn shape can be individually optimized for isolated horns or for horns in a feed array. The feed array environment can produce results that lead to a different optimized shape than the isolated horn. Lower off axis cross-polarization can result in improved efficiency and susceptibility to interference.

A feed network is provided that includes a transmit section, a body section coupled to the transmit section, and a receive section coupled to the body section. The transmit section and the body section form a transmitter unit coupled to a first section of a core waveguide, wherein the first section of the core waveguide is a square waveguide. The body section and the receive section form a receiver unit coupled to a second section of the core waveguide, wherein the second section of the core waveguide is a circular waveguide.

An orthomode junction for separating and/or combining orthogonally-polarized radiofrequency wave signals, comprises a body which has a main cavity forming a main waveguide, which has a blind end, and auxiliary cavities forming auxiliary waveguides, which communicate laterally with the main cavity in the vicinity of the blind end thereof, and a deflection insert situated at the blind end of the main cavity and facing the auxiliary cavities, the deflection insert having different shapes on the side of the auxiliary cavities respectively.