Common Antenna

Common Antenna

 

an antenna with auxiliary equipment used for community reception of television and radio signals. A common antenna installation includes the antenna itself, amplifiers, a network of distribution lines, and subscribers’ branch boxes with terminals, designed for connecting a large number of individual receivers (up to several hundred). To improve the reception of television signals common antenna installations use directional yagis and wide-band (multiple-tuned) dipole antennas with reflectors oriented toward the transmitting station. The use of directional antennas and directional branches (in distribution lines) also makes possible the attenuation of multiple reflection images on television screens.

A common antenna is usually installed on the roof of a building. One common antenna replaces a large number of individual receiver antennas, improves reception conditions, and does not spoil the exterior of a building.

References in periodicals archive ?
In such systems a low loss and low cost diplexer is a key component enabling two RF chains to share a common antenna.
Two of the most common antenna shapes for shipping labels are squiggle and double cross (see illustration).
COMSEC interface tray 5810-01-529-3613 Interface unit, auto (IRD) 7025-01-529-0642 Digital computer system (laptop) 7010-01-528-9891 Common antenna group (feedome assy) 5985-01-530-2371 Antenna pedestal support (motor assy) 5985-01-530-1552 Antenna support group (tripod hub) 5985-01-530-2368 Antenna pedestal support (tripod assy) 5985-01-530-2369 Control receiver (STRC) 5895-01-530-1058 W-3 power cable 6150-01-530-1909 W-5 special cable 6150-01-530-8289 special cable 5995-01-530-1905
The most common antenna types for wireless LANs are omni-directional, but directional radiation patterns are sometimes needed.
The system incorporates different network technologies on different frequency bands, including GSM900, GSM1800, CDMA800, CDMA2000 and WCDMA in a common antenna system.
The star point combiner principle was chosen to implement a suitable filter combiner to achieve low attenuation loss with acceptable mechanical dimensions in combining the up-link and downlink ranges with the receiving and transmitting ranges in a common antenna field.
The design produced by engineers at Sanders (Nashua, NH) merged several sensors into a common antenna system.
LTE Diplexer Cross-band Combiner: Ultra efficient, two channel (698-894 MHz/1710-2170 MHz) high/low port Cross-band Combiner allows European Digital Dividend LTE (4G) signals to be combined onto a common antenna or cable feed lines with existing DCS and/or UMTS 2G/3G systems; offers one of the industry's lowest guaranteed insertion loss levels and highest guaranteed RF power handling, along with leading isolation and inter modulation distortion for optimum signal quality.
Contract notice: Delivery of operation, maintenance and support of ishj common antenna networks and delivery of content.
The star point combiner principle was chosen to implement a suitable filter combiner to achieve low attenuation loss with acceptable mechanical dimensions in combining the uplink and downlink ranges with the receiving and transmitting ranges in a common antenna field.
A monostatic radar has the receiver and transmitter collocated with a common antenna for both receive and transmit functions.

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