Active Repeater

Repeater, Active


receiving and transmitting radio device installed at intermediate points in radio communications links, designed to amplify received signals and then retransmit them farther along the link. The intermediate point may be mobile, as a communications satellite, or stationary, as a relay tower. An active repeater consists of an antenna or several antennas, a radio receiver, a radio transmitter, equipment for remote control of repeater operation, and a power supply. The active repeater usually uses solid-state devices; vacuum tubes are used less frequently. The output stages of the radio transmitter usually incorporate traveling-wave tubes.

In contrast to a passive repeater, an active repeater is capable of providing service only to a limited number of links in a communications network. In order to eliminate mutual interference during simultaneous reception and transmission of radio signals, active repeaters use frequency-division, time-division, and coded squelch. Mutual interference is also eliminated by maintaining the signal level within predetermined limits and by protecting the transmitter against overloads (the total power of all transmitted signals must not exceed the permissible loading of the transmitter). Active repeaters often have standby equipment that can be switched in automatically.


Chistiakov N. I. Osnovy radiosviazi i radioreleinye linii. Moscow, 1964.
References in periodicals archive ?
Delivery, installation and commissioning of active repeater technology consisting 2 master units and 58 remote units.
Delivery, installation, configuration and commissioning of a management system for configuration, maintenance and monitoring of active repeater technology.
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The Active Repeater was originally developed to achieve greater coverage for wireless load cell technology in the construction sector.
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Isolation techniques for active repeater rounds are reviewed, followed by results achieved with some practical device configurations.
An active repeater receives the signal from one site, amplifies it, and retransmits it to a distant site.
DynaChip Corporation is the inventor of the Active Repeater, a new patented active programmable interconnect element.
The firm macro implementation coupled with our high-speed active repeater architecture gives our customers the flexibility to tailor the PCI core to their specific needs while maintaining the full 528 Mbytes per second bandwidth" said Eric Fleischman, VP of Marketing for DynaChip.
That performance is made possible by DynaChip's unique, high-speed Active Repeater Architecture.
Decoys carrying active repeaters can create the same effects in the radar as the repeater jammers discussed above.
Active repeaters regenerate the optical signals for distribution between subnetworks and to other floors.

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