49
REFLECTOR ANTENNAS
Phone: 301-937-8888
z
z
Fax: 301-937- 2796
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z
ht tp://www.ar a -i n c .co m
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sales@ara- i nc. com
LOW SIDELOBE DUAL POLARIZ ED REFLECTOR ANTENNA
The DPRA-2737/A parabolic antenna is designed with a dual polarized feed optimized in size and
phase center in order to get very low sidelobes. This antenna is ideal for RCS measurements.
The same type of antenna can be available at other frequencies on request.
FREQUENCY BAND:2.7 - 3.7 GHz
SIDELOBES:< -25 dB
GAIN:> 26 dB
-3 dB BEAMWIDTH:7.5 -6 degrees
CROSS-POLARIZATION:< -25 dB
VSWR: < 2:1
5
0
-5
-10
-15
-20
-25
-30
-35
-
45
-
30
-15 015
30 45
MA
GN
IT U
DE
(dB
)
AZIMUTH (Degrees
H-PLANE RADIATION PATTERN 3.2 GHZ
DPRA-2737/A
35 GHZ PARABOLIC DISH ANTENNA
The PRA-3435/A4 is a high gain parabolic dish antenna with a single symmetric feed. An orthomode
transducer (omt) is included to give simultaneous vertical and horizontal linear polarization. The antenna
ex hibits excel lent c r oss polarizat ion as well as good sidel obe per for manc e.
Frequenc y Range 34.5 – 35. 5 GHz
Antenna Gai n 50 dBi min. ( @ 35 GHz)
Antenna 3 dB B eamwidth 0.5
Peak Power 100 kW
Average Power 100 W
VSW R 2.0:1 max.
Pol ar izati on Dual Linear ( verti c al & hor izont al)
Cross Polarizat ion I sol ation 30 dB mi n. i n the 3 dB cont our
Antenna Feed Input Flanges Cover flanges of t y pe UG-599/ U
Beam Coi nc idence Vert ical & hor izont al RF beam axis
is within 0.1 of eac h other
Si delobes <20 dB below the peak of t he
boresight main beam
Si z e 4-foot r eflec tor
PRA-3435/A4 Feed
................................................................................................................................................................................................................................................................
49
REFLECTOR ANTENNAS
Phone: 301-937-8888
z
z
Fax: 301-937- 2796
z
z
ht tp://www.ar a -i n c .co m
z
z
sales@ara- i nc. com
SPECIFICATIONS: PARABOLIC REFLECTOR ANTENNAS
* TYPE: S: Standard Parabolic Reflector D: Deep Dish H: High Performance Antenna with Radome
FREQUENCY REFLECTOR GAIN HA LF POWER FRONT
ARA MODEL RANGE DIAMETER DB LINEAR BEAMWIDTH TYPE*VSWR TO BACK
(GHZ)FT (M) LOW MID HIGH (DEGREES) RATIO (DB)
PRA-1719/A2 17 .7 - 19.7 2(0.6) 38.4 38.9 39.3 2.1 - 1.8 S 1.15 45
PRA-1719/A4 17.7 - 19.7 4(1.2) 44.3 44.8 45.2 1.0 - .92 S1.15 55
PRH-1719/A2 17 .7 - 19. 7 2(0.6) 38.4 38.9 39.3 2.1 - 1.8 H 1.15 62
PRH-1719/A4 17.7 - 19.7 4(1.2) 44.3 44.8 45.2 1.0 - .92 H1.15 66
PRA-1826/A2 18 .0 - 26 .5 2(0.6) 38.1 40.1 41.2 2.0 - 1.4 S 1.5 45
PRA-2123/A2 21.2 - 23.6 2(0.6) 40.0 40.4 40.8 1.7 - 1.5 S1.15 45
PRA-2123/A4 21 .2 - 23.6 4(1.2) 45.8 46.2 46.6 .86 - .77 S 1.15 55
PRH-2123/A2 21.2 - 23.6 2(0.6) 40.0 40.4 40.8 1.7 - 1.5 H1.15 65
PRH-2123/A4 21 .2 - 23. 6 4(1.2) 45.8 46.2 46.6 .86 - .77 H 1.15 67
Relative
Gain
(dB)
PRH-1719/A2 - CROSS POLARIZATION AND SIDELOBE
CURVE
0 5 10 15-5-10-15-20-60-100-140-180
-70
-60
0
-10
-20
-30
-40
-50
-70
-60
0
-10
-20
-30
-40
-50
20 60 100 140 180
Azimuth Degrees from Main Lobe
PRH-1719/A2
ENVIRONMENTAL RATINGS TABLE
VERTICAL TOWER SURVIVAL RATINGS OPERATE WIND
MOUNT ANTENNAS:
REFLECTOR DIAMETERS WIND
MPH (KM/HR)ICE
IN (MM)MPH
(KM/HR)MAX. DEFLECTION
DEGREES
2' and 4' 125 (201) 1 (25) 100(161) 0.1
6' and 8' 125 (201) 1 (25) 70(112) 0.1
In the above tab le, "Sur vi val Rati ng s " and "Oper ate Wind" c ompl y w i th t he def i ni t i ons of Standar ds EIA-
195-C and EIA-222-D. Beam deflections at “Operate Wind” and material stresses at “Survival Wind” do
not exceed allowed limits.
