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SPECIAL
ANTENNAS
1.
CONICAL SPIRAL ANTENNA, MODEL CSA 630/A
Model
CSA-630/A is a broadband conical spiral antenna designed
specially for use at John F. Kennedy Space Center, NASA
in Florida.
SPECIFICATIONS
TYPE OF ANTENNA:
4-ARM SPIRAL
ELECTRICAL
Frequency:
60 to 300 MHz
Gain:
> 0 dBi from vertical axis to +/- 60 deg
>-10
dBi from 60 to 80 deg
Gain Flatness:
+/- 2 dB at any azimuth angle and within any
elevation
angle < 80 degrees from vertical in the
frequency
range of 60 to 300 MHz
Polarization:
LHC (standard) or RHC (specify)
SWR:
2:1
Impedance:
50 Ohms nominal
Pattern:
Hemispherical in elevation plane;
Omni-directional
in azimuth
Power:
1 Watt minimum over the frequency range with
Optional octave band hybrids up to 200 Watts
RF
Connector:
BNC male
MECHANICAL
Height:
96
Base
Diameter:
84
Weight:
< 50 lbs.
Mounting:
Mounts on a 2 OD pipe
Finish:
White
ENVIRONMENT
Installation:
Out door desert & maritime environment
Wind
Loading:
100 MPH winds
Temperature:
-28 to +65 degrees centigrade
Relative
Humidity:
10 to 95%
2.
PLANAR SPIRAL ANTENNA, MODEL PSA-510/A
Model PSA-510/A is a planar cavity backed spiral antenna
designed for the frequency range from 500 MHz to 1 GHz.
The antenna is used in DF systems, surveillance,
electronic warfare, flush mounted airborne applications
and also as a broadband feed for reflector type
antennas. The antenna is right hand (standard) or left hand (specify)
circularly polarized and produces unidirectional
radiation pattern at all frequencies with front to back
ratio of minimum 10 dB.
The antenna has a nominal gain of 3 dBic +/-2 dB
with an axial ratio of about 1.5 dB on the axis.
The antenna has a SWR of 2.5:1 over the frequency
range and can handle up to 10 Watts of CW power.
The antenna is constructed of printed circuit board and is
housed in an aluminum cavity.
The antenna is protected from environment by a
fiber glass cover.
SPECIFICATIONS
ELECTRICAL
Frequency:
500
to 1000 MHz
Polarization:
RHCP
(standard) or LHCP (specify)
SWR:
2.5:1
Beamwidth:
Varies
from approximately 110 degrees at 500 MHz
to 75 degrees at 1 GHz
Power Gain:
See
table
Axial ratio:
Typically
1 dB
Power:
Up
to 10 Watts
RF Connector:
TNC
female
MECHANICAL
Diameter:
10
Height/Deep:
5.5
Weight:
5 lbs.
Finish:
White
Environmental:
MIL-STD-810C
3.
PLANAR SPIRAL ANTENNAS, MODEL PSA-12/A,
PSA-218/A
Model PSA-12/A and PSA-218/A are similar to Model PSA-510/A
except for the frequency range and the size.
SPECIFICATIONS
PSA-12/A
PSA-218/A
Frequency:
1
to 2 GHz
2 to 18 GHz
Diameter:
4.75
2.50
Height/Deep:
4.00
2.00
Weight:
<l lbs.
<6 oz.
Finish:
White
White
4.
FLUSH MOUNTED AIRBORNE ANTENNA, MODEL
ADM-C10
Model ADM-C10 is an extremely low weight flush mounted,
wrap around airborne Microstrip patch antenna array
designed to operate over the frequency range of 2.2 to
2.3 GHz with greater than 10 MHz bandwidth from any
given operating frequency (customer to provide the
center frequency of
operation at the time of order).
The antenna is designed to transmit minimum of 10
Watts of CW power.
The flush mounted, wrap around antenna is
linearly polarized (customer to specify polarization,
circumferential or axial) and produces omni-directional
radiation pattern with +/- 5 dB circularity.
The antenna has a maximum SWR of 2:1.
SPECIFICATIONS
ELECTRICAL
Frequency:
2.2
to 2.3 GHz
Bandwidth:
>10
MHz
Polarization:
Linear
Directivity:
Omni-directional
radiation pattern
Beamwidth:
60
degrees minimum
Omni Coverage:
+/-5 dB, in roll plane
(circularity)
Output Impedance:
50 Ohms
Power:
10
Watts
SWR:
2:1
RF Connector:
SMA
female
MECHANICAL
Size:
Specify
the diameter
Thickness:
0.094
(antenna + protective cover)
Width:
4
Weight:
<1.5 lbs.
Mounting Curvature:
Flush mounted and Wrap around
Mounting:
Adhesive
bond and clearance holes
ENVIRONMENTAL
Temperature:
-40
deg. C to +70 deg. C minimum
Altitude:
0
to 70,000 feet
Vibration:
5.8
Gs RMS random, 50 to 2000 Hz
5.
HIGH GAIN HELICAL ANTENNAS FOR TELEMETRY
APPLICATIONS
Antenna
Design and Manufacturing Corporations helical beam
antennas are designed for ground-air-ground, vehicular
and base communications in the frequency range from 800
MHz to 2.4 GHz. The
antenna is right hand circularly polarized
and produces unidirectional radiation pattern at
all frequencies, with front to back ratio of minimum 15
dB. The
antennas have a nominal gain of 12 dBic and has a
typical SWR
of 2:1 over most of the frequency range.
The antenna is capable of handling 200 Watts of
Cw power.
The
antenna is covered with a radome housing to protect
it from hostile environment and is foam filled to
protect it from shock and vibration.
ADM
Corporation offers four standard helical antennas:
·
Model
HA-811/A
0.80 - 1.10 GHz
·
Model
HA-1216/A
1.20 1.60 GHz
·
Model
HA-1719/A
1.71 1.85 GHz
·
Model
HA-2224/A
2.20 2.40 GHz
SPECIFICATIONS
ELECTRICAL
Frequency:
See above
SWR:
2:1 maximum
Polarization:
RHC
Power
gain:
12 dBic
Beamwidth:
50 +/- 5 degrees
Power:
Up to 200 Watts
RF
Connector:
Type N female
MECHANICAL
881/A
1216A
1719/A
2224/A
Length:
24.0
15.0
12.0
10.0
Diameter
@ Top:
4.5
4.0
3.5
2.5
@ Base:
12.0
8.0
6.0
6.0
Weight:
10 lbs.
8.0 lbs.
6.0 lbs.
4.0 lbs.
Weather
Protection: Radome
Finish:
White
OPTIONS
·
LHC
Polarization
·
Helical
Antenna Array of 4 antennas for 6 dB added gain
·
Universal
Joint with mast which mounts on any standard tripod with
Ό - 20 stud, Model UJ-1 to position the antenna in any
elevation angle.
TYPICAL POWER GAIN FOR HORN ANTENNA
MODEL RHA-13/A
FREQUENCY
(GHz)
POWER GAIN (dBi)
0.90
9.0
0.95
11.6
1.00
12.5
1.10
13.9
1.20
14.3
1.30
14.5
1.40
15.2
1.50
15.6
1.60
15.8
1.70
15.8
1.80
16.0
1.90
15.7
2.00
15.6
2.20
15.8
2.40
15.8
2.60
18.1
2.80
12.8
3.00
13.2
TYPICAL
POWER GAIN AND ANTENNA FACTOR
FOR
PLANNAR SPIRAL ANTENNA
MODEL
PSA-510/A
Frequency (GHz)
Gain (dBi)
A.F. (dB/m)
0.30
-10.0
30.0
0.40
0.8
21.5
0.50
4.4
20.0
0.60
6.0
20.0
0.70
6.8
20.5
0.80
6.7
21.5
0.90
6.5
23.0
1.00
7.2
23.0
1.10
7.3
24.0
1.20
7.8
24.0
1.30
7.0
25.5
1.40
4.6
28.5
1.50
3.9
30.0
1.60
-0.7
35.0
6.
HIGH GAIN HORN ANTENNA, MODEL RHA-13/A
ADM
Corporation has developed this antenna for a major
defense contractor.
SPECIFICATIONS
Frequency:
1 to 2.6 GHz (usable from 0.9 to 3 GHz)
Power
Gain: & | 
