Directional Antenna Information

0943-EX-ST-2014 Text Documents

L3 Communications

2014-11-04ELS_155352

L3 Communications MID Propriety Near Vertical Direction Finder Calibration System Dual Polarized Antenna Data 1. Antenna Identification The NVDF Calibration System uses a 360-RMD-824-960-15 dual polarized antenna. This antenna was developed and built by 360 Antenna1 for this system. 2. Calibration System Antenna Pointing Parameters The antenna points above the horizon when in normal operation. The following are rules applied during calibration. 1. Bore Sight Pointing Limit: Greater Than or Equal To 25 degrees above the horizon 2. Horizontal: 360 degrees horizontal rotation 3. Maximum range of aircraft from antenna: 30 n mi (55.6 km) 3. Performance Parameters The following figures are from data related to the deployment and performance of the 360-RMD- 824-960-15 dual polarized antenna. Figure 1 NVDF Calibration System Antenna on Test Mounting Base 1 470 Nepperhan Ave. Yonkers, New York 10701 L3 Communications MID Propriety

L3 Communications MID Propriety Figure 2 Typical Deployment of NVDF Calibration System Antennas Note: The 360-RMD-824-960-15 dual polarized antenna is in the corner nearest the viewer. A tracking antenna for a separate aircraft tracking and antenna pointing system is in the farthest corner. L3 Communications MID Propriety

L3 Communications MID Propriety Figure 3 Specified Antenna Parameters Figure 4 Measured Antenna 3 dB Beamwidths and Gains Measured by Manufacturer L3 Communications MID Propriety

L3 Communications MID Propriety Figure 5 Plots of Antenna Gain at 900 MHz L3 Communications MID Propriety


Document Created: 2014-11-04 09:57:53
Document Modified: 2014-11-04 09:57:53
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