feedhorns造句

• The 90 GHz pixels are coupled to the telescope optics through individually machined contoured feedhorns.
• For the waveguide image that is shown, a horizontally combiner performs a mathematical subtraction on the electrical signals arriving from the feedhorns.
• Each module has one transmit-receive feed horn and one auxiliary receive feed horn for a second polarization, totaling 44, 000 feedhorns.
• The two feedhorns are positioned at the correct spacing for reception from the two satellites required and the DiSEqC switching system is used to select between the signals from the two satellites with commands from the connected receiver.
• The required separation of the monoblock's feedhorns depends on the angular separation of the satellites to be received, the position of the receive site on the Earth's surface and the focal length of the dish.
• In fact, it can be difficult to physically fit two separate LNBs onto a dish at the correct separation for Astra 23.5癊 and Astra 19.2癊 because their bulk may prevent the feedhorns sitting close enough together.
• The Duo LNB is rotated in the feed clamp to a certain tilt angle to provide both the correct'skew'angle for the feedhorns to align with the incoming signals, and the necessary height difference between the feedhorns to accommodate the different elevations of the two satellite positions.
• The Duo LNB is rotated in the feed clamp to a certain tilt angle to provide both the correct'skew'angle for the feedhorns to align with the incoming signals, and the necessary height difference between the feedhorns to accommodate the different elevations of the two satellite positions.
• Note : In the US, an LNB with two outputs is termed a " dual LNB " but in the UK, the term " dual LNB " historically described an LNB with two outputs, each producing one polarisation only, for connection to a multiswitch ( the term and the LNBs fell out of use with the introduction of the Universal LNB and the multiswitch equivalent, the quattro LNB-see below ) and today " dual LNB " ( and " dual feed " ) describes antennas for reception from two satellite positions, using either two separate LNBs or a single Monoblock LNB with two feedhorns.