MWA Active Crossed-Dipole Antenna Ordering Information
The MWA crossed-dipole antenna may be ordered as described below. A brief technical description and application information is here.
MWA Active Crossed-Dipole Antenna
Because the MWA Antenna is out of production, we no longer offer it but we do have stock of the MWA low noise amplifiers. The MWA Antenna consists of four self-supporting bat-wing blades, central hub enclosure for the dual low noise amplifier assembly, adjustable feet for leveling the antenna, two 7 m phase-matched coaxial cables and all fasteners and hardware except the ground screen. This antenna is the same as the antenna used in the MWA and shown below but it is broken down for easy shipment. The components that make up the antennas are ready for field assembly using common tools.
The low noise amplifiers are dual assemblies with one LNA on each side of the PCB. Each LNA circuit is powered through the coaxial cable by 5 Vdc and draws about 120 mA. The noise figure is in the 0.5 dB range but varies a little with frequency and is higher at the low end of the frequency range. The gain is 33 to 37 dB throughout the frequency range. See image below of two LNA dual assemblies.
Each amplifier uses two Agilent ATF-54143 HEMT amplifiers in a balanced-input configuration, with a transformer balun on the output for connection to a 50 ohm coaxial cable. A 6-pole highpass filter between the transformer and the output SMA jack attenuates signals below 60 MHz.
The LNAs can be supplied with or without a set of 7 m long phase-matched coaxial cables.
The shipping configuration depends on the number of antennas ordered. The shipping carton for one complete antenna is approximately 21 x 15 x 6 inches (0.5 x 0.4 x 0.2 m). The shipping weight for one complete antenna is approximately 6 lb (3 kg).
* ARO: After Receipt of Order; shipping usually is within 2 weeks
When inquiring or ordering, please provide your complete shipping address including postal (zip) code and telephone number. Be sure to put meaningful text in the Subject field of your email or your inquiry will be trapped by our spam filters and never delivered.
Prices do not include taxes, duties or tariffs. Charges for customs and brokerage fees may apply to international orders.
Important - Read This Before Ordering or Inquiring
The above-left image shows a "Tile" of 16 MWA antennas and a beamformer assembly. Not shown is the MWAPC, which is not used with a Tile. The above-right image shows two LNA dual assemblies.