General Characteristics of Mesa Antenna Ranges
Range Name 
Range Length 
Operating Frequency 
Measurements 
Test Positioner 
212 East 
0130 ft. 
UHF to KBand 
Radiation patterns and gain 
Polarization with traverse table over azimuth on cart 
212 West 
0650 ft. 
UHF to KBand 
Radiation patterns and gain 
Polarization over elevation over azimuth on powered cart, 20 ft mast 
256 East 
068 ft. 
UHF to KBand 
Radiation patterns and gain 
Polarization with traverse table over azimuth, 20 ft mast 
40 ft. Anechoic Chamber 
19 ft. Test Area 
X to WBand 
Radiation pattern and gain using cylindrical near field techniques 
Azimuth 
60ft Anechoic Planar Nearfield 
15 ft. x 30 ft. scan area 
Lband to Kaband 
Radiation pattern and gain using planar nearfield technique 
Fixed antenna mount 
60ft Anechoic Farfield Range  050 ft.  Xband to Kaband  Radiation pattern and gain using farfield or spherical techniques  Polarization with traverse table over azimuth 
1200 ft. Range 
1200 ft. 
UHF to WBand 
Radiation patterns and gain 
Azimuth over elevation over azimuth 
3000 ft. Range 
3000 ft. 
UHF to WBand 
Radiation patterns and gain 
Heavy duty polarization over elevation over hydraulic elevation over azimuth 
Large Bell Jar Breakdown Facility 
6 ft. Test Cell 
UHF to KBand 
RF High Power breakdown 
6 Ft. Bell Jar in anechoic screened room 
Small Bell Jar Breakdown Facility  14" cell  UHF to KaBand  RF High Power breakdown  14" DIA x 20" Bell Jar 
243A 
15 ft. 
X to KaBand 
Radiation patterns and gain 
Polarization with traverse table over azimuth 
243B 
018 ft. 
X to KBand 
Transmission & reflection for Frequency Selective Surfaces 
Approx 1 m square zone 
60ft Anechoic Chamber
The planar nearfield range located in the 60ft chamber collects data over a rectangular region in front of an Antenna Under Test (AUT) by using a mechanically actuated probe. Referring to the figure at right, the AUT size D, probe travel L, AUT/Probe separation Z and probe size P determine the angle Φ according to the equation L=D+P+2Z tan(Φ). The calculated farfield pattern of the antenna will be accurate in the region between ±Φ. The maximum probe travel L is 30ft in the horizontal direction and 15ft in the vertical direction. Typical AUT/Probe separation Z is between 36 wavelengths and probe size P~1 wavelength. A farfield pattern region of Φ=70 degrees is typical.
The farfield range positioner located in the 60ft chamber has been used to perform spherical nearfield testing by collecting data over a spherical region around the AUT in conjunction with custom nearfield to farfield software developed at JPL. This method provides complete angular coverage (except for a small exclusion region at the antenna mounting bracket). The maximum AUT size for spherical measurements is limited by the distance to the nearest wall in the range and the size of the chamber access door. For example, the 15ft diameter Mars Science Laboratory (MSL) Cruise Stage mockup was measured in the chamber using the spherical nearfield method.
40ft Anechoic Chamber
The cylindrical nearfield range located in the 40ft chamber collects data over a cylindrical region surrounding an Antenna Under Test (AUT) by using a mechanically actuated probe to scan in the vertical direction and a turntable to rotate the AUT. This method provides complete angular coverage in the azimuth direction, but does not cover conical exclusion regions above and below the AUT. The angle Φ that defines these exclusion regions is determined as described above for the planar nearfield system. For the cylindrical scanner, probe travel L is 150 inches. The maximum antenna size is constrained by the distance from the turntable’s axis of rotation to the chamber walls, approximately 9 feet.
Approximate Maximum Test
Antenna Aperture Size  Farfield Ranges 

60’ Anechoic 
256 East 
212 East 
212 West 
1200 Ft. 
3000 Ft. 
243 

0.5 GHz 
1.7 m* 
2.5 m 
3.5 m* 
7.8 m* 
10.5 m* 
17.0 m* 
1.2 m* 
1.0 GHz 
1.2 m* 
1.8 m 
2.5 m 
5.6 m* 
7.5 m* 
12.5 m* 
83 cm* 
2.3 GHz 
77 cm 
1.2 m 
1.6 m 
3.7 m 
4.9 m* 
8.1 m 
54 cm* 
8.5 GHz 
40 cm 
60 cm 
90 cm 
1.9 m 
2.6 m 
4.2 m 
28 cm 
16.5 GHz 
29 cm 
40 cm 
60 cm 
1.4 m 
1.8 m 
3.2 m 
20 cm 
30.0 GHz 
22 cm 
33 cm 
46 cm 
1.0 m 
1.4 m 
2.2 m 
15 cm 
60.0 GHz 
15 cm 
23 cm 
32 cm 
73 cm 
98 cm 
1.6 m 
11 cm 
95.0 GHz 

1.4 m 

*May not be practical,
each case will need to be evaluated. 