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 ?
As an example, a common antenna could be used for agriculture and road applications.
Together, SMAP's two instruments, which share a common antenna, produce the highest-resolution, most accurate soil moisture maps ever obtained from space.
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.
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.
Harris was also recognized for its invention "Combining Adjacent TV Channels for Transmission by a Common Antenna," which is a method of "space combining" analog and DTV signals on adjacent frequencies within a single antenna.
Bluetooth[R] often shares a common antenna with the WiFi radio, therefore TriQuint's 802.
The combining of circuitry may allow the near field communications circuitry and the non-near-field communications circuitry to be coupled to common antenna structures.
To further reduce deployment and operational costs, TeleCorp is deploying the "Block Agile" feature with Lucent's Dual-Duplexed PCS base station, which combines both receive and transmit capabilities in a common antenna.
Enabling Operators to Leverage a Common Antenna for 2G and 3G Communications, the Same Band Combiner Offers Cost Savings and Time-to-Market Efficiencies
Mobile phone operators to a common antenna covers the GSM stations, public buildings and railway tunnels.
The system incorporates different network technologies on different frequency bands, including GSM900, GSM1800, CDMA800, CDMA2000 and WCDMA in a common antenna system.

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