A user terminal equipment and a method for antenna selection are provided according to the disclosure. The user terminal equipment includes a first signal transceiving antenna, K second signal transceiving antennas, and a rotating assembly. The first signal transceiving antenna and the K second signal transceiving antennas are disposed on the rotating assembly and configured to be driven to rotate by the rotating assembly, where K is a positive integer. The first signal transceiving antenna is configured to operate in a first frequency band, the K second signal transceiving antennas are configured to operate in a second frequency band, and the first frequency band is different from the second frequency band. The first signal transceiving antenna and the K second signal transceiving antennas are carried on a same rotating assembly to realize simultaneous rotation of two antennas operating in different frequency bands.

A microwave transmission arrangement, comprising an electrically conductive hollow waveguide having a first waveguide portion, a second waveguide portion between the first waveguide portion and a first end of the hollow waveguide, and a conductive transition surface of the hollow waveguide forming a transition between the first waveguide portion and the second waveguide portion; and a microwave circuit board including a dielectric carrier, and a first conductor pattern on a first side of the dielectric carrier, the first conductor pattern including a patch for radiating or receiving microwave signals in the predefined wavelength range, and a first ground plane surrounding the patch, wherein the first ground plane of the microwave circuit board is in conductive contact with the first end of the hollow waveguide, and extends into the second waveguide portion cross-section area to define at least one conductive pocket together with the second waveguide portion and the transition surface of the hollow waveguide.

A microwave transmission arrangement, comprising an electrically conductive hollow waveguide having a first waveguide portion, a second waveguide portion between the first waveguide portion and a first end of the hollow waveguide, and a conductive transition surface of the hollow waveguide forming a transition between the first waveguide portion and the second waveguide portion; and a microwave circuit board including a dielectric carrier, and a first conductor pattern on a first side of the dielectric carrier, the first conductor pattern including a patch for radiating or receiving microwave signals in the predefined wavelength range, and a first ground plane surrounding the patch, wherein the first ground plane of the microwave circuit board is in conductive contact with the first end of the hollow waveguide, and extends into the second waveguide portion cross-section area to define at least one conductive pocket together with the second waveguide portion and the transition surface of the hollow waveguide.

Aspects of the subject disclosure may include, a system that facilitates detecting first electromagnetic waves propagating along a transmission medium are experiencing a first propagation loss, inducing second electromagnetic waves along the transmission medium to mitigate the first propagation loss, detecting that the second electromagnetic waves are experiencing a second propagation loss and inducing third electromagnetic waves along the transmission medium to mitigate the second propagation loss. To reduce radiation losses when transitioning from the first electromagnetic waves to second electromagnetic waves and transitioning from the second electromagnetic waves to the third electromagnetic waves, the system can be further adapted to use differing criteria for each transition. Other embodiments are disclosed.

Aspects of the subject disclosure may include, a system that facilitates detecting first electromagnetic waves propagating along a transmission medium are experiencing a first propagation loss, inducing second electromagnetic waves along the transmission medium to mitigate the first propagation loss, detecting that the second electromagnetic waves are experiencing a second propagation loss and inducing third electromagnetic waves along the transmission medium to mitigate the second propagation loss. To reduce radiation losses when transitioning from the first electromagnetic waves to second electromagnetic waves and transitioning from the second electromagnetic waves to the third electromagnetic waves, the system can be further adapted to use differing criteria for each transition. Other embodiments are disclosed.

A radio frequency waveguide communication system includes a guided electromagnetic transmission network, and a cooling air source. The guided electromagnetic transmission network includes one or more remote node in fluid communication with one or more waveguides. The cooling air source is in fluid communication with the guided electromagnetic transmission network and is configured to provide pressurized cooling air to the waveguide. The waveguides direct the pressurized cooling air to the remote node.

A radio frequency waveguide communication system includes a guided electromagnetic transmission network, and a cooling air source. The guided electromagnetic transmission network includes one or more remote node in fluid communication with one or more waveguides. The cooling air source is in fluid communication with the guided electromagnetic transmission network and is configured to provide pressurized cooling air to the waveguide. The waveguides direct the pressurized cooling air to the remote node.

An electronic device including a second wireless communication circuit providing second radio access technology (RAT) and a communication processor controlling the second wireless communication circuit are provided. The communication processor may allocate a detection symbol for detecting an external object, may detect the external object from the allocated symbol, and may control the second wireless communication circuit based on the detected external object.

An electronic device including a second wireless communication circuit providing second radio access technology (RAT) and a communication processor controlling the second wireless communication circuit are provided. The communication processor may allocate a detection symbol for detecting an external object, may detect the external object from the allocated symbol, and may control the second wireless communication circuit based on the detected external object.

Provided is a leaky wave antenna comprising a power supply line receiving power from the outside and a metal plate receiving a signal for forming a beam from the power supply line, in which etching patterns for forming a dual-beam are symmetrically formed on one side of the metal plate and the other side of the metal plate facing the one side and a plurality of vias are disposed between the one side and the other side.