CCI’s Quad Band with “Dual Band (AWS/PCS) Active & 700/850 Bypass TMA contains one PCS and one AWS Low Noise Amplifier(LNA) which are fully duplexed and the 700 Band and Cellular Band being bypassed to a single BTS input port and a single Antenna output port. Low noise high linearity amplifiers improve the uplink sensitivity and the receive performance of base stations. The TMA is fully compliant with the latest AISG 2.0 specification. The TMA supports CDMA, EDGE/GSM, UMTS and LTE BTS equipment. The TMA is ideally suited for sites upgraded to quad-band using the existing infrastructure. The TMA allows the sharing of feeder lines for both AWS and PCS bands thus reducing tower loading, leasing, and installation costs. The input and output connectors are located inline for ease of installation in space constrained areas such as uni-pole structures and stealth antennas.

The TMA system consists of an outdoor quad band tower mount unit which provides low noise amplification of both PCS and AWS signals combined with 700/850 Bypassed signals from antenna port to a common BTS port. Both the AWS and PCS paths are dual duplexed to separate the low-power uplink signals from the high-power downlink signals at the antenna port. The PCS and AWS Rx signals are amplified with dedicated ultra-low noise HEMT LNA’s with independent adjustable gain control for each band. The tower mount unit consists of seven band-pass filters, two redundant low-noise amplifiers with independent gain control, bypass failure circuitry, a bias tee, and lightning protection circuitry which are all housed in an IP68 moisture proof enclosure suited to long-life masthead mounting. The unit provides protection against lightning strikes via a multi-stage surge protection circuit. AISG 2.0 DC power and control is provided via the feeder cable from the BTS using the AISG 2.0 and 3GPP standard. Additionally, the AISG TMA operates at constant power when powered by an AISG 2.0 compatible Site Control Unit (SCU), but may also be powered by a standard Power Distribution Unit (PDU). A separate AISG connector is also provided to allow direct AISG connection or “Daisy Chaining” to multiple AISG products at the top of the tower.
An optional Site Control Unit (SCU) is available to power up to 32 AISG modules per sector and to provide all the monitoring and alarm functions for the system. The SCU is housed in a single (1U) 1.75” x 19” rack and contains dual redundant power supplies capable of being “hot swapped” that provide a regulated DC supply voltage on the RF coax for the tower mount amplifiers.