Abstract:
A satellite including an antenna assembly adjustable between a stowed configuration and a deployed configuration. When in the stowed configuration, the antenna assembly can be stowable within a container, such as a container compatible with a CubeSat. When in the deployed configuration, a reflector of the antenna assembly can be directionally adjustable, such as in both elevation and azimuth.
Abstract:
본 발명은 무선 AV 시스템에서 편극 안테나를 이용한 데이터 전송 장치 및 방법, 그리고 데이터 수신 장치 및 방법에 관한 것이다. 이러한 본 명세서는 상호성(reciprocity)에 기반하여 하향링크에 대한 편극 정렬을 수행하는 방법과, 상향링크에 대한 편극 정렬을 수행하는 방법, 그리고 하나의 데이터 전송장치 또는 하나의 데이터 수신장치가 다수의 DMG 안테나를 사용하는 경우, 각 DMG 안테나별 독립적으로 편극 정렬을 수행하는 방법을 제공한다. 무선 AV 시스템에서 데이터 전송장치와 데이터 수신장치의 다중 안테나들 간에 편극을 정렬함으로써 최적의 MIMO 성능이 보장될 수 있고, 상호성에 기반하여 하향링크 또는 상향링크에 대한 편극 정렬을 선택적으로 수행할 수 있으며, 각 DMG 안테나간에 독립적인 편극 정렬을 통해 편극의 왜곡을 줄일 수 있다.
Abstract:
A reflector assembly configured to move between a stowed configuration and a deployed configuration includes a central hub, a series of ribs coupled to the central hub, and a flexible reflective material attached to the ribs. Each rib includes a root rib, an intermediate rib, and a tip rib. The root rib is configured to rotate in a first direction about a first axis away from a coaxial axis of the central hub, the intermediate rib is configured to rotate in the first direction about a second axis substantially parallel to the first axis, and the tip rib is configured to rotate in the first direction about a third axis substantially parallel to the second axis as the reflector assembly moves into the deployed configuration. The flexible reflective material and the ribs together form a reflective surface with a substantially paraboloidal surface profile configured to focus electromagnetic energy.
Abstract:
In accordance with one or more embodiments, a communication device includes a dual-band antenna array configured to transmit first radio frequency (RF) signals to a remote device in an RF band and to transmit first millimeter wave (MMW) signals to the remote device in a MMW frequency band, wherein the MMW frequency band is above the RF band. A base transceiver station is configured to generate a consolidated steering matrix in accordance with the transmission of the first RF signals to the remote device in the RF band. A remote radio head is configured to convert the consolidated steering matrix to a converted steering matrix that facilitates the transmission of the first MMW signals to the remote device in the MMW frequency band via the dual-band antenna array in accordance with an antenna beam pattern having at least one selected null direction, and further configured to generate the first MMW signals in accordance with the converted steering matrix.
Abstract:
In accordance with one or more embodiments, a communication device includes a dual-band antenna array configured to communicate RF signals in an RF band and to communicate MMW signals in a MMW frequency band with a remote device. At least one transceiver is configured to generate the RF signals conveying a command to the remote device to transmit probe signals in the MMW frequency band, to receive the probe signals via the dual-band antenna in the MMW frequency band, and is initialized with first antenna beam steering parameters to facilitate a first antenna beam of the dual-band antenna array for the operation in the MMW frequency band. A controller is configured to generate the first antenna beam steering parameters based on the probe signals and to generate the control signal to switch the dual-band antenna array to the operation in the MMW frequency band after transmission of the RF signals.
Abstract:
In one embodiment, a sub-reflector assembly (1a) for a reflector antenna has (i) a waveguide transition (5a) at a waveguide end (65a) of the sub-reflector assembly and configured to fit within a waveguide (3a), (ii) a dielectric radiator (25a) connected to the waveguide transition and extending both laterally and back towards the waveguide end of the sub-reflector assembly, and (iii) a sub- reflector (15a) connected to the dielectric radiator. By configuring the dielectric radiator to extend both laterally and back towards the dielectric end of the assembly, radiated energy from the waveguide is directed such that the sub-reflector assembly can be used with shallow reflector dishes (e.g., F/D ratio greater than 0.25) and still achieve sufficiently high directivity.
Abstract:
A satellite dish connection mechanism (1) that provides fixing of a satellite dish antenna in the position of receiving signals by means of a mounting component (2) connected with the satellite dish (3) and has a connection profile (4) that is connected to the mounting component (2) by passing through the satellite dish (3) and that carries a LNB connector member (5)
Abstract:
The invention relates to apparatus and a method to allow the adjustment of a position of an item, such as an antenna of satellite broadcast receiving apparatus so as to allow the elevation and/or azimuth position to be fixed accurately. Adjustment means are provided which have an axis of rotation offset to the centre axis of a body portion of the rotatable member to allow the body portion side walls to act as a cam.