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Bilateral Amplifiers

Bilateral Amplifiers_Freeware_0904

900 MHz Receive & Transmit Amplifiers

These Bilateral Amplifiers are for use only by the US Government, Military customers or for export.

 
The AAA series of Bilateral Amplifiers are designed to improve the range of 902-928 MHz spread spectrum radios by amplifying both the transmitted and received signals right at the antenna, mitigating cable loss. 

  • On the receive direction, the amplifiers incorporate GaAs FET amplification along with SAW and dielectric resonator filtering. This results in a 1.5 dB Noise Figure and a +5 dBm input intercept point along with 40 dB of cellular and pager band rejection. A combination of SAW and lowpass filtering reduces harmonic output to less than -70 dBc.
  • On the transmit direction, the amplifiers generate 1 W or 5 W, making them the ideal solution for extending the range of spread spectrum radios.
  • The amplifiers are powered through the antenna cable, simplifying the installation process.    
  • The amplifiers are packaged in sealed, milled, aluminum housing, providing the utmost in weather protection.

These products consist of 3 devices: 

  • Amplifier, mounted near the antenna (typically on the mast)    
  • Diplexer, mounted near a power source (typically by the radio)    
  • Power supply (wall wart), permanently connected to the diplexer 

Amp Diplex Diagram_0904


The diplexer receives DC power from the power supply, and adds it to the signal in the antenna cable. The amplifier separates the signal from the DC power, and uses that DC power.
 
Optionally, you may order amplifiers that are powered directly, without a diplexer (see below).
 
Specifications
 
General:
      Frequency Range902-928 MHz
Transmit:
      Input RF Power15 mW Min; 330 mW Max
      Output Power1 or 5 Watts Min
      Harmonic Output2nd -40 dBc, 3rd and higher -70 dBc
      Turn-on Transients-70 dBc @ fc ±230 KHz, higher for lower turn-on times
      Turn-on Time20 µs
Receive:
      Noise Figure1.5 dB Max
      Gain14 dB Min, higher gain optional
      Intercept Point+5 dBm referred to input
      In-band Response902-928 MHz: ± 1 dB
      Out-of-band rejection<895 MHz: -40 dB; 930 MHz: -40 dB
Power Supply:
      Supply Voltage110 Vac (Included power supply) or
10.5 to 18.0 Vdc
      Power ConsumptionAAA-1W: 0.35 A Max @ 12 Vdc
AAA-5W: 2.0 A Max @ 12 Vdc
Mechanical:
      EnclosureMilled Aluminum with Integral Bracket
      Dimensions63.5 W x 102 L x 21.3 H [mm]
2.5 W x 4.0 L x 0.84 H ["]
      RF ConnectorsTo Amplifier: SMA Female
To Diplexer: Type-N Female

Ordering Info
 
Part NumberPowerAmplifierDiplexer
AAA-1W1 WAmplifier_0904Diplexer 1w_0904
AAA-5W5 WAmplifier_0904Diplexer 5w_0904

Also available by special order:

220 Vac power supply
Directly powered amplifier (no diplexer)
Directly powered amplifier (no diplexer) with on/off control
Faster turn-on/turn-off: 1 µs
50 ms time-out disabled (for continuous transmissions)