Tower Mounted Amplifiers

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+1 (201) 342-3338 phone  
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89 Leuning Street  
South Hackensack, NJ 07606  
USA  
 
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+1 (201) 342-3338 phone  
+1 (201)-342-3339 fax  
 
89 Leuning Street  
South Hackensack, NJ 07606  
USA  
 
 
      Dual Band (AWS/PCS) with 700/850 Bypass TMA   TMADB7821VG12A
                
       
       
         
  TMADB7821VG12A FV  
  • Small, lightweight, twin unit
  • Quad-Band Dual Duplexed AWS/PCS “Active” with 700/850 Bypass
  • Independent Gain Control
  • High Linearity
  • Lightning protected
  • Fail-safe bypass mode
  • High reliability

 

Overview

 

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.

 

Technical Description:

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 up to 32 AISG modules per sector and to provide the 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.

Electrical

RF Parameters Ports Frequency(MHz) Specification
Return Loss 700/850 ANT 698 - 849 18 dB min.
PCS/AWS ANT 1850 - 1910 18 dB min. (15 dB min. bypass mode)
1930 - 1990 18 dB min.
1710 - 1755 18 dB min. (15 dB min. bypass mode)
2110 - 2155 18 dB min.
BTS 698 - 849 18 dB min.
1850 - 1910 18 dB min. (15 dB min. bypass mode)
1930 - 1990 18 dB min.
1710 - 1755 18 dB min. (15 dB min. bypass mode)
2110 - 2155 18 dB min.
Gain PCS/AWS ANT - BTS 1710 - 1755 6 to 12 dB adjustable in 0.25 dB steps via AISG (± 0.2 dB)
1850 - 1910 6 to 12 dB adjustable in 0.25 dB steps via AISG (± 0.75 dB)
Insertion Loss 700/850 ANT 698 - 849 0.25 dB typ.
PCS/AWS ANT - BTS (RX Bypass mode) 1850 - 1910 1.7 dB typ. @25°C, 1.9 dB typ. @65°C  ± 0.75 dB; 2.4 dB @25°C, 2.6 dB @65°C @ 1910 MHz (band edge) ± 0.75 dB
1710 - 1755 1.1 dB typ. @25°C, 1.3 dB typ. @65°C  ± 0.2 dB
PCS/AWS ANT - BTS (TX) 1930 - 1990 0.4 dB typ.
2110 - 2155 0.3 dB typ.
Noise Figure  ANT (PCS/AWS) - BTS  1850 - 1910 1.5 dB typ. @ 25°C, 1.7 dB typ. @ 65°C; 2.0 dB @ 25°C, 2.2 dB @ 65°C @ 1910 MHz (bnd edge) 
1710 - 1755 1.3 dB typ. @ 25°C, 1.5 dB typ. @ 65°C
Input Third Order Intercept Point PCS/AWS ANT - BTS 1710 - 1755 +12 dBm min. at max. gain
PCS/AWS ANT - BTS 1850 - 1910 +12 dBm min. at max. gain
General Characteristics  
Impedance 50 ohms
Continuous Average Power 200 W max.
Peak Envelope Power 2 kW max.
Intermodulation Performance(all ports) <-110 dBm (-153 dBc) typical (2 × +43 dBm tones) all bands
Operating Voltage +10V to +30V DC provided via coax or AISG
Power Consumption < 2.0 W

Environmental

Operating Temperature   -40˚C to +65˚C
Enclosure  IP68
MTBF >500,000 hours
Lightning Protection 8/20us, ±2KA max, 10 strikes each per IEC61000-4-5

Mechanical

Connectors   3 × 7-16 DIN female 1 × AISG
Dimensions (w/o connectors or brackets)(H×W×D) 12.4 × 10.31 × 3.72 in. (315 × 262 × 95 mm)
Dimensions (with brackets)(H×W×D) 15.75 × 10.75 × 4.56 in. (400 × 273 × 116 mm)
Weight 23.1 lbs (10.5 kg)-with bracket, 22 lbs (10 kg)-without  bracket
Mounting Pole/Wall mounting bracket

 

   TMADB7821VG12A Outline
  TMADB7821VG12A Outline Drawing

 

Block Diagram

   TMADB7821VG12A BD
  TMADB7821VG12A Block Diagram

Accessories

SCU-AISG2-3 AISG 2.0 Site Controller
RET-CBK AISG Cable Kit
BT-0821-DMDF-AG-O DIN-Male RF Port, DIN-Female RF+DC+AISG Port
BT-0821-DFDM-AG-O DIN-Female RF Port, DIN-Male RF+DC+AISG Port
BT-0821-DFDF-AG-O DIN-Female RF Port, DIN-Female RF+DC+AISG Port

Parts & Accessories

TMADB7821VG12A Dual Band (PCS/AWS) with 700/850 Bypass TMA

Certifications

Antenna Interface Standards Group (AISG), Federal Communication Commission (FCC) Part 15 Class B, CE, CSA US
 
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89 Leuning Street

South Hackensack, NJ 07606

+1 (201) 342-3338

+1 (201) 342-3339 fax