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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: 12.5 dBi at 1 GHz; 18.1
dBi at 2.6 GHz
F- B Ratio: 15 dB minimum
Power: 500 Watts
SWR: 2.5:1
Impedance: 50 ohms nominal
Connector: N female
Size: 26.5 L x 29.5 W x 12 H
Weight: 15 lbs
Mount: Tripod (standard) or End
mount (option)
Finish: Iridite
Color: Gray
7.
HORN ANTENNA, MODEL RHA-25/A
Frequency: 2 to 5 GHz
Power Gain: 12 to 17 dBi
F B Ratio: 15 dB minimum
Power: 200 Watts
SWR: 2.5:1.0
Impedance: 50 Ohms
Polarization: Linear
Connector: Type N female
Size: 5.25 (W) x 8.25 (H) x 8.75
(L)
Weight: 2.5 pounds
Mount: Tripod and End mount
Finish: Iridite
Color: Gray or White
8.
DOUBLE RIDGED HORN ANTENNA, MODEL DRH-118/A
Frequency: 1 to 18 GHz
Gain: 6.5 dBi minimum at 1 GHz
Power: 300 Watts
VSWR: 2.5:1 maximum
Impedance: 50 Ohms
Polarization: Linear
Connector: Type N female
Size: 5.6 (W) x 9.5 (H) x 11 (L)
Weight: <5 lbs.
Mount: Tripod and End mount
Finish: Iridite
Color: White or Gray (option)
Environment: Weather proofed for
extended out door use
9.
DUAL POLARIZED HORN ANTENNA, MODEL DPH-118/A
Frequency: 1 to 18 GHz
Gain: 7 dBi average
Power: 200 Watts
VSWR: 2.5 average
Impedance: 50 Ohms
Polarization: Dual Linear,
Simultaneous vertical and
Horizontal
Connector: Type N or SMA female
Size: 6.25 (W) x 6.25 (H) x 8 (L)
5.60 (W) x 5.60 (H) x 11 (L)
Weight: <5 lbs.
Mount: Tripod or End mount
Color: White or Gray (option) on
iridite finish
10.
HIGH GAIN DIRECTIONAL YAGI ANTENNAS
Antenna Design has designed High
Gain Directional Yagi for point to point or point to multipoint
applications where high gain and low visibility are required.
The antenna is protected from harsh
weather environments by an optical radome enclosure.
SPECIFICATIONS
Frequency: 800 2500 MHz
Band width: 100 MHz (customer to
provide the frequency range)
VSWR: 2.0 : 1.0 maximum
Gain: 15 dBi: 17.5 dBi for array
Power: Up to 200 watts
Side Lobes: 12-15 dB down
11.
VHF/UHF BROADBAND DIRECTIONAL ANTENNA
ADM Corporation has develop a NEW
BROADBAND DIRECTIONAL ANTENNA for the VHF and UHF band for transmit and
receive purposes and for communications and other applications.
The present version consists of a
dielectric-clad slot antenna for 120 MHz and 20% bandwidth at SWR of
2:1. The antenna measures 6 long x 3 high x 2 deep of aluminum
construction.
This antenna can be used without the
dielectric in the 580 to 2500 MHz frequency range. Other frequencies can
be accommodated.
For example, the antenna can be
designed as a hand held small antenna for communications with
satellites.
SPECIFICATIONS
Frequency: 120 MHz
Gain: 3.0 5.5 dBi (120 MHz to 1
GHz)
Bandwidth: 20% at SWR 2:1
30% at SWR 3:1
3 dB beamwidth: Elevation, 130 150
degrees
Impedance: 50 Ohms
NON-DIELECTRIC MODEL:
Frequency: 580 2500 MHz
All other
specifications same as above.
*CONTACT ADM FOR
DETAILS*
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