Directional, High Gain

Overview

At ARA we offer five different types of array antennas for high gain application. One of our specialties are Box Horn Arrays or BHA Series antennas, which are briefly mentioned below.

“Normal Beam” Flat Antenna Arrays

The RDA, BHA and BAA Series arrays provide a “Normal Beam” radiation pattern where the main beam is accurately perpendicular (normal) to the face of the array and to the rear mounting surface.

TWA and TAA Series “Traveling Wave” Flat Antenna Arrays

These antennas have their main beam located at an angle to the normal position of the array aperture. The resulting radiation is polarized in the plane orthogonal to the beam tilt. TTP Series polarization rotators are available to rotate the polarization to another plane. The beam tilt changes with frequency in these arrays (useful in frequency-scanning radars and other similar applications).

Low Profile and High Gain Flat Array Antennas
  • Satellite-User equipment
  • VHF/UHF Leo Users
  • Remote Sensing and Imagery Systems
  • Communication, Base Stations
  • Wireless LAN, Data Subscriber and ISM/NII applications
  • RFID Readers and Tags
  • Radar Systems
  • Military and Commercial GPS Systems
Marine Radar and Perimeter Surveillance Antennas
  • Marine Radar Systems applications
  • Perimeter Surveillance applications
Directive Network Arrays

Our PNA Series antennas are physically small and ideally suited for applications where directivity is important and small size is critical. PNA antennas are designed to exhibit a directional pattern comparable to that of a well designed log periodic antenna. A typical VHF PNA antenna; however, is only one tenth the size of a log periodic. The pattern exhibited by a PNA antenna in the “H” plane is essentially a cardioid. The deep null at the rear of the pattern can be used effectively to reject a strong signal from one direction. These miniature directional antennas are practical for use with a rotator for rotation in azimuth to minimize interference from noise sources in the azimuth direction. A PNA antenna integrated with a pre-amplifier provides a directional receiving system of an unusually small size.

Broadband Horn Antennas

Broadband Horns have instantaneous bandwidths exceeding a standard waveguide band.

Linearly Polarized
ARA’s DRG Series broadband horns are linearly polarized antennas. DRG Series horn antennas cover the 200 MHz to 40 GHz frequency band in overlapping ranges.

Dual Polarized Horns
The QRG Series antennas are the dual polarized counterparts to the DRG series linearly polarized horns. These horns are provided with two orthogonally placed connectors capable of receiving simultaneous vertical and horizontal polarizations. Hybrid/Switch assemblies and remote switch control units are available for selecting RHCP LHCP, vertical and horizontal polarizations.

Shaped Beam Horns

Our Shaped Beam Broadband Horns having asymmetrical beamwidths, controlled radiation characteristics or near constant beamwidths over large frequency ranges are available for direction finding and other applications.

Horn Antennas

Scalar, Ridged, Grid, Pyramidal, Lensed, Conical, Diagonal and Shaped Beam horns are available for a whole range of RF systems requiring low to medium gain directional antennas. Linearly Polarized, Dual Polarized and Circularly Polarized horns and feed horns are available for use in frequency bands from 100MHz to 100GHz.

Special hybrid designs & several standard horn antennas are optimized for specific applications including:

  • Flight Line Test Chambers
  • Near Field Probes
  • RADAR Systems
  • Antenna Measurement, Gain Standards, Calibration & EMC Testing
  • RCS Measurements
  • Illuminator (Feeds) For Compact Ranges
Linearly Polarized (LPD, LPV, and LPA Series)

Our LPD, LPV, and LPA seriesof antennas are linearly polarized medium gain, log periodic antennas for broadband applications.

The “V” configuration LPV Series log periodic antennas give greater power gain than that obtainable with a planar log-periodic antenna of the same length and taper.  These antennas also provide symmetric beams in the field planes and can be used as feeds for reflectors.

LPA Series antennas are high gain arrays comprised of two or more linearly polarized log periodic elements. Array antennas operating below 400 MHz are packaged in a kit form to be compact and facilitate ease of transportation.

Dual Polarized (LPC, LCV, LCA Series)

The LPC, LCV, and LCA series of antennas have two orthogonal linear polarizations (H & V) and these antennas and are supplied with two output connectors.

Our LCV Series pyramidal shaped log periodic antennas are dual linearly polarized versions of our LPV series linearly polarized antennas. LCV antennas can be used as broadband dual polarized feeds for reflectors with F/D ratios in the 0.4 to 0.55 range.

LCA series high gain arrays include two or more dual polarized log periodic antenna elements.

All dual polarized antennas may be supplied with a compatible hybrid to receive/transmit circularly polarized signals. Switch assemblies and switch control units are available for use with LPC antennas to select the desired polarization.

Collapsible Log Periodic Antennas

Log periodic antennas operating in HF and VHF bands can be relatively large structures. ARA’s LPD antennas operating below 300MHz are designed to collapse into smaller sections for mobile and semi-permanent applications. Additionally, several foldable and lightweight log periodic antennas are available for military and tactical applications when time is critical in deploying and storing the antenna. These antennas can be very easily assembled and disassembled in the field with minimal or no tools. 

Directive Network Arrays

Our PNA Series antennas are physically small and ideally suited for applications where directivity is important and small size is critical. PNA antennas are designed to exhibit a directional pattern comparable to that of a well designed log periodic antenna. A typical VHF PNA antenna; however, is only one tenth the size of a log periodic. The pattern exhibited by a PNA antenna in the “H” plane is essentially a cardioid. The deep null at the rear of the pattern can be used effectively to reject a strong signal from one direction. These miniature directional antennas are practical for use with a rotator for rotation in azimuth to
minimize interference from noise sources in the azimuth direction.

A PNA antenna integrated with a pre-amplifier and rechargeable batteries or a power supply provides a directional receiving system of an unusually small size.

FEATURED

©2017 ANTENNA RESEARCH ASSOCIATES, INC. | 11850 Baltimore Ave Suite H, Beltsville, MD 20705 | 301.937.8888

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