Antennas
Antenna products:
 Efield generating antennas: designed to generate strong electric field intensities for use in radiated susceptibility testing systems.
 Standard Gain Horn Antennas: linearly polarized antennas. Highpower Standard Gain Horn antennas operate over the 750 MHz to 40 GHz frequency range
 Broadband Gain Horn Antenna: operate over the 200MHz to 40GHz frequency range. High power broad band horn antenna products are linearly polarized.
Broadband Gain Horn Antennas, ANTBHA Series
0.20 – 40 GHz200 – 1000 wattsBroadband Gain Horn Antenna Features:

BHASeries of broadband Gain Horn Antennas are broadband antennas and in some cases operate over multioctave frequency ranges. These highpower broadband horn antennas operate over the 200 MHz to 40 GHz frequency range. BHA series horn antennas are linearly polarized and designed to provide strong electric field strength (V/m). The antennas offer low VSWR (1.5:1 max.), and some models are for high power handling capability. ANTBHA model RF microwave broadband gain horn antennas are ideal for EMC testing (radiated susceptibility testing) and other applications. The BHASeries are manufactured from aluminum so they are lightweight and durable. The antennas where applicable come with tripod mounting capability for quick and easy implementation during testing. 
IFI Broadband Horn Antenna Specifications  
Power Handling Capability  See Antenna Model Table 
Frequency Range  See Antenna Model Table 
Input Impedance  50 ohms nominal 
Output Port Impedance  50 ohms nominal 
VSWR  Less than 1.5:1 typical maximum 
Physical Size  See Antenna Model Table 
Connectors  See Antenna Model Table 
Broadband Gain Horn Antenna Model Number 
Frequency Range (GHz) 
Rated Power (watts min.) 
Connector Type 
Dimensions Nominal  Inches (W x H x L) 
Gain (dBi nominal) 

10  12  15  20  XX  
ANTBHA102800  0.2 – 1.0  500  N Female  28 x 38 x 36  510  N/A  N/A  N/A  N/A 
ANTBHA 251500  1.0 – 2.5  500  N Female  15 x 13 x 14  10  12  15  20  XX 
ANTBHA 42500  2.0 – 4.0  500  N Female  7 x 5 x 10  10  12  15  20  XX 
ANTBHA 84500  4.0 – 8.0  500  N Female  7 x 5 x 10  10  12  15  20  XX 
ANTBHA 82500  2.0 – 8.0  500  N Female  7 x 5 x 10  10  12  15  20  XX 
ANTBHA 7525500  2.5 – 7.5  500  N Female  7 x 5 x 10  10  12  15  20  XX 
ANTBHA 188500  7.5 – 18.0  500  N Female  7 x 5 x 15  10  12  15  20  XX 
ANTBHA 186500  6.5 – 18.0  500  N Female  7 x 5 x 15  10  12  15  20  XX 
ANTBHA 2618200  18.0 – 26.5  200  WR42  2 x 2 x 4  10  12  15  20  XX 
ANTBHA 4026200  26.5 – 40.0  200  WR28  2 x 2 x 4  10  12  15  20  XX 
ANTBHA 1021KW  0.2 – 1.0  1000  7/16 Female  28 x 38 x 36  510  N/A  N/A  N/A  N/A 
ANTBHA 2511KW  1.0 – 2.5  1000  7/16 Female  15 x 13 x 14  10  12  15  20  XX 
ANTBHA 421KW  2.0 – 4.0  1000  7/16 Female  12 x 10 x 24  10  12  15  20  XX 
ANTBHA 841KW  4.0 – 8.0  1000  7/16 Female  12 x 10 x 24  10  12  15  20  XX 
ANTBHA 821KW  2.0 – 8.0  1000  7/16 Female  22 x 15 x 30  10  12  15  20  XX 
ANTBHA 75251KW  2.5 – 7.5  1000  7/16 Female  22 x 15 x 30  10  12  15  20  XX 
ANTBHA 1881KW  7.5 – 18.0  1000  WRD 750  7 x 5 x 12  10  12  15  20  XX 
ANTBHA 1861KW  6.5 – 18.0  1000  WRD 650  7 x 5 x 12  10  12  15  20  XX 
ANTBHA 81400  1.0 – 8.0  400  N Female  8 x 6 x 10  812  N/A  N/A  N/A  XX 
ANTBHA 121400  1.0 – 12.0  400  N Female  8 x 6 x 10  812  N/A  N/A  N/A  N/A 
ANTBHA 181400  1.0 – 18.0  400  N Female  9 x 6 x 10  610  N/A  N/A  N/A  N/A 
Note: Antenna dimensions increase with higher gain models. –XX denotes a specific gain that may be required.
Additional IFI Antenna Products include:
Specfications are subject to change without noticification
©2011 All rights reserved Instruments For Industry
Standard Gain Horn Antennas: ANTSGH Series Gain Horn Antennas
0.5 – 40.0 GHzUp To 1000 watts

The SGHSeries of Standard Gain Horn Antennas are linearly polarized antennas. These highpower standard gain horn antennas operate over the 750 MHz to 40 GHz frequency range in the specified frequency ranges. The antennas offer low VSWR (1.5:1 max.), and are suitable for calibration of other antennas. They may be used as receiving or transmitting antennas and pickup horns for field sampling. They are also used for some EMC testing (radiated susceptibility testing) and other applications. The SGHSeries are manufactured from aluminum so they are lightweight and durable. The antennas where applicable come with tripod mounting capability for quick and easy implementation during testing. IFI ANTSGH series standard gain horn antennas may be used as receiving or transmitting antennas and pickup horns for field sampling. They are also used for some EMC testing (radiated susceptibility testing) and other applications. These Gain Horn Antenna are manufactured from aluminum so they are lightweight and durable. IFI gain horn antennas are tripod mountable, capabil for quick and easy implementation during EMC and EMI compliance, susceptibility testing. 
Model EFG Standard Gain Horn Antenna Specifications  
Power Handling Capability  See Model Table 
Frequency Range  See Model Table 
Input Impedance  50 ohms nominal 
Output Port Impedance  50 ohms nominal 
VSWR  Less than 1.5:1 typical maximum 
Physical Size  See Model Table 
Connectors  See Model Table 
Standard Gain Horn Antenna Model Number 
Frequency Range (GHz) 
Rated Power (watts min.) 
Connector Type 
Dimensions Nominal  Inches (W x H x L) 
Gain (dBi nominal) 

10  15  20  
ANTSGH975  0.75 – 1.12  1000  WR975  22 x 20 x 24  N/A  14  N/A 
ANTSGH650  1.12 – 1.70  1000  WR650  12 x 6 x 15  10  15  N/A 
ANTSGH430  1.70 – 2.60  1000  WR430  8 x 4 x 10  10  15  N/A 
ANTSGH340  2.20 – 3.30  1000  WR340  6 x 4 x 9  10  15  20 
ANTSGH284  2.60 – 3.95  1000  WR284  4 x 3 x 8  10  15  20 
ANTSGH229  3.30 – 4.90  1000  WR229  4 x 3 x 6  10  15  20 
ANTSGH187  3.95 – 5.85  1000  WR187  3 x 2 x 5  10  15  20 
ANTSGH159  4.90 – 7.05  1000  WR159  3 x 2 x 4  10  15  20 
ANTSGH137  5.85 – 8.20  1000  WR137  2 x 2 x 3  10  15  20 
ANTSGH112  7.05 – 10.0  1000  WR112  2 x 1 x 3  10  15  20 
ANTSGH102  7.00 – 11.00  1000  WR102  2 x 1 x 3  10  15  20 
ANTSGH90  8.20 – 12.40  1000  WR90  2 x 1 x 2  10  15  20 
ANTSGH75  10.0 – 15.0  1000  WR75  2 x 1 x 2  10  15  20 
ANTSGH62  12.4 – 18.0  1000  WR62  1 x 1 x 1  10  15  20 
ANTSGH51  15.0 – 22.0  1000  WR51  1 x 1 x 1  10  15  20 
ANTSGH42  18.0 – 26.5  1000  WR42  1 x 1 x 1  10  15  20 
ANTSGH28  26.5 – 40.0  1000  WR28  1 x 1 x 1  10  15  20 
Note: Antenna dimensions increase with higher gain models.
Additional IFI Antenna Products include:
Specfications are subject to change without noticification
©2011 All rights reserved Instruments For Industry
EField Generating Antenna 
Series EFG3 and EFG3B
Field Generating Antennas
10 kHz – 220 MHz1000 – 2000 watts

The RF microwave EFG3 EField Generating Antenna is designed to generate strong electric field intensities within its vicinity for use in radiated susceptibility testing systems. The EFG3 E field generating antenna provides a means for dissipating any unused power through the use of a conventional coaxial 50 ohm termination of appropriate power handling capability. This allows the EFG3 to handle up to 1000 watts of continuous power and 2000 watts for the EFG3B. The EFG3 Efield generating antenna is able to perform in such an efficient manner due to its physical configuration as a radiating transmission line. Highly efficient and conservatively rated broadband transformers are used for impedance matching. This unique matching configuration allows the best possible power to field conversion efficiency by stepping up the source voltage to twice the input value. The EFG3 efield generating antenna can be rotated on its boom axis for both vertical and horizontal polarization and can be combined in multiple bank arrays for an increased useable test area. Pivoting extensions of the top and bottom edges provide access to the area of highest voltage differential such that EField intensity can be maximized for testing small objects under extreme field conditions, typically several hundred volts per meter. EFG3 efield generating antenna offers a matched load to the driving source over its entire useable frequency range. 
IFI EFG Efield Generating Antenna Specifications  
Power Handling Capability  EFG3 up to 1000 watts continuous CW input 
Frequency Range  10 kHz to 220 MHz 
Input Impedance  50 ohms nominal 
Output Port Impedance  50 ohms nominal 
VSWR  Less than 4:1 at all frequencies, reflections included 
Physical Size  Main antenna element: 1 meter x 1 meter x 10 centimeters (LxWxD) 
Load Required  50 Ohm, standard coaxial termination, with power rating appropriate for source 
Connectors  EFG3B Type SC Female 
Additional Efield Generating Antenna Specifications:
The EFG3 radiating system is small enough to be physically manageable and portable, but large enough to provide efficient conversion of RF power into a uniform electric field over a useful physical area. This high efficiency is obtained in several ways. As shown in Fig. 1, broadband transformers are used to step up the 50 ohm input impedance to 200 ohms. This is the design impedance of the terminated loop antenna system. Voltage between the upper and lower edges of the antenna system then becomes approximately twice that of the driving source. For example, a 25 watt power source will cause a 54 volt rms differential, after passing through the step up transformer. Since the upper and lower edges of the antenna are spaced at 1 meter, any point in the plane of the antenna (and between these two edges) will have an EField gradient of twice the applied voltage, measured in volts per meter. Furthermore, the upper and lower edges of the EFG3 are equipped with pivoting projections that can be used to form an extended transmission line mode of operation at the outer surface of the antenna. Small objects (less than 1/2 meter in size) can be placed between the opening and will be subjected to the corresponding field intensity as a function of the applied voltage.
For objects too large to be placed between these extensions, the EFG3 may be used in an EField radiating mode. Fig. 2 shows the typical power required to generate a given field strength at a distance of 1 meter from the plane surface of the antenna. EField radiation is a nonlinear function of frequency, which accounts for the wide band of related power and field strength, taking into account best and worst case conditions. Reflections can cause perturbations in the field distribution and widen the effective curve width for a given power input and desired EField. In selecting a power source for use with the EFG3, allowances should be made for these effects. The source should be capable of supplying sufficient power for the worst case conditions, under given use for the full frequency spectrum. Furthermore, there should be sufficient control over the power source to permit attenuation for use under best case conditions. Unlike similar high power antennas intended for EMC/Susceptibility testing, the unused power is not dissipated in the EFG3 itself. A second set of broadband transformers are employed to return the balanced loop 200 ohm termination impedance to an unbalanced 50 ohm output; this allows system termination with a conventional coaxial load. This output port can be connected directly to a termination capable of dissipating the appropriate power levels. The actual antenna pattern is a cardioid with the null at the feed point where the antenna attaches to its horizontal pipe support. Both input and output connectors are located near this point. The input port of the EFG3 system does not present an objectionable VSWR for most normal wide band laboratory grade amplifiers over the full rated frequency spectrum. Fig. 3 shows a VSWR plot with respect to frequency for a standard installation.
IFI has a full line of antennas, gain horn antennas, LOG antennas and broadband horn antennas for EW, EMC and radiated susceptibility testing applications. This RF microwave antenna is ideal for automatic swept field susceptibility testing.
Additional IFI Antenna Products include:
Specfications are subject to change without noticification © IFI2011