Signal Antenna

Signal Antenna Systems, Inc.

Legacy Antenna Products

EMC Test System

EMC Test System

EMC test system for 20-220 MHz, with 10 kw compact LPA, shown on 2-4 m. adjustable height, roll-around dielectric crank-up mast. Mast is capable of polarization change from H to V, and up to 15 deg. forward tilt .

EMC Test System

EMC test system for 65-220 mHz, with 5 kw LPA, shown on 2-4 m. crank-up roll-around dielectric mast with tilt and polarization adjust

Drive-in E-Field Generator

Drive-in E-Field generator for 0.01-20 mHz @ 10 kw
One of several designs developed at SAS for EMC testing of vehicles and other devices with susceptible electronics inside. E-fields in excess of 300 v/m are generated, and the units are designed to accept 10 kw cw. Air-cooled resistor banks are used which do not require any other coolant.

The entire structure is designed for rapid assembly and disassembly, thus freeing up valuable chamber space when not in use.

Log Periodic Array for OTHR

Log Periodic Array for OTHR

The unit shown is our SA LPMA4, and operates over 4-16 MHz (useable 3.5-21 MHz) provides up to 12 dBi gain and handles 20 kw cw power levels. The unit was designed for OTHR (over-the-horizon radar) use, and is supplied with an extensive on-earth ground system.
The antenna system is designed to be portable, and can be set up by a few people in a relatively short time . Weather protection is included, and 100 mph wind survival is standard.

SAS has developed HF OTHR antennas, including 10 kw transmit LPA’s and multiple receive LPA’s used by the US Navy for early-warning systems.

Dual-Polarized LPA

Dual-Polarized LPA

A 20-150 MHz model is shown, one of many types developed . Two feedpoints are provided for the two orthogonal linear polarizations. A hybrid coupler may also be used to create circular polarization.

SAS has developed an end-loading system for the lowest-frequency elements on it’s log periodic arrays, which reduces element lengths and wind loading without sacrificing gain.

Rapid-Field-Deploy LPA for Meteor Bounce

Rapid-Field-Deploy LPA for Meteor Bounce

This array operates over 35-150 MHz @ +8 dBi gain, and was designed for a major Meteor Bounce Program, with many hundreds of units shipped. Two persons can assemble/disassemble this antenna within 8 minutes. Folding elements, a two-section boom, and the SAS end-loading system, along with earth-mounted installation fixtures all contribute to the ease of use of this array.

Communications LPA

Communications LPA

Operating over 20-500 MHz, this antenna also utilizes the SAS end-loaded element system to reduce size and wind area. Stabilizer rods made of fiberglass provide inter-element spacing stability, guaranteeing electrical performance remains constant under high wind conditions, up to 100 mph.

Log Periodic

Log Periodic

0.7-2.7 GHz Log Periodic.For hand-held field use

Log Periodic

Log Periodic

0.35-7.2 GHz  Log Periodic with swivel mount

Omnidirectional Antennas

  20-500 MHz Omni

Ultra-Wideband Omni Antenna (0.82 - 20 GHz)

Omnidirectional Antennas

SA UWB820, Ultra-Wideband vertical Omni antenna which covers 820 MHz to 20 GHz.

Discone

A group of 30-400 KHz ground mounted discones is shown on the right. SAS has developed various discones, including rapid field deploy types.

Rapid Field Deploy OMNI

Rapid Field Deploy OMNI

30-90 MHz Rapid Field Deploy OMNI'S
These omnidirectional vertically polarized dipole antennas exhibit a wide instantaneous bandwidth and high efficiency, which result from their mechanical design. They are easily erected in the field, and fit neatly into carrying bags for transport.

Rapid Field Deploy OMNI

Rapid Field Deploy OMNI

20-400 MHz Rapid field-deploy omni’s
This type of conical monopole can cover 20-500 MHz, when ground mounted and using wire radials or when vehicle- mounted. The vehicular version is currently in use by NATO in Europe.

Robust Omni

Robust Omni

This extremely rugged biconical dipole was one of the first antennas ever developed by SAS, and a significant number of them have provided ground communications from mountaintop locations at the NTC (National Training Center) Ft. Irwin, California since 1982. The antenna is rated for 140 mph wind survival.

DF Array

DF Array

SAS has developed many antenna arrays used for Direction Finding Applications. Shown on the right is a 3-element 2-30 MHz array used by the US Navy. Another DF array covers 20-500 MHz (in three bands) with +/- 2 deg. phase matching.

Colinear

Colinear

A 225-400 MHz two element collinear array is shown. "Fat" dipoles developed by SAS are available for frequency ranges up to 2.8 :1.
Specific dipoles and monopoles are available for frequency ranges of 100-500 MHz, 0.5-1 GHz, and 1-2.5 GHz, and other frequency bands such as the cellular and ISM bands.

Conical Monopole

Conical Monopole

A field-deployable wideband vertical omni, which can be erected by two persons in a short time.

NTC Base Station Antenna

Stacked collinear broadband dipoles are provided on a common mast. The dipoles are shown installed for vertical polarization, however the installation kit allows for horizontal polarization as well.

This type of collinear dipole array is available for many frequency bands, for instance, the SA V425 designed for the US Navy, tuned for 400-450 mHz with +4 dBi and 1.5 kw cw power handling .

VHF/UHF Airborne Blade Antenna (100 - 500 MHz)

Aircraft Blade Antenna

SA AM100-3 Blade Antenna

The SA AM100-3 has been in service on Falcon and Learjets since 1983. The antenna handles input power up to 400W CW, and is used for communication jamming and EW applications.

Aircraft Antenna

20-100 MHz Aircraft Antenna
The SA AM20 is a robust design, capable of 200 + watts power input. The unit has seen service on large aircraft for communication jamming applications.

Ultra-Wideband Omni Antenna (0.3 - 20 GHz)

Omnidirectional Antennas

SA UWB300, Ultra-Wideband vertical Omni antenna which covers 300 MHz to 12 GHz (useable to 20 GHz)

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