Antenna Registration Directional Antenna Information

0550-EX-CN-2019 Text Documents

Systems & Technology Research

2019-07-10ELS_233768

Radar Development and Testing on Government Contract
RE: Antenna Registration Q4: Directional Antenna Information, Exhibit
File Number: 0550-EX-CN-2019
Confirmation Number: EL675086
Date: July 10, 2019

Experiment Overview
Systems & Technology Research (STR) is leading efforts on the DARPA radar
development project called “Radar Net.” We are supporting a Phase 2 development
effort.

This phase will involve performance testing of our radar system. A maximum of two
aircraft will be outfitted with systems and simultaneously operating in the same
region with identical radar equipment. Both systems will employ identically
constructed phased array antennas. Refer to file number 0935-EX-CN-2018 for
more information on the radar systems.

To support this effort, we require multi-node data communications between two
aircraft and two ground-based nodes. The aircraft will contain the radar systems,
and telemetry and position data will be shared between the systems and the ground
nodes using MANET data radios made by Trellisware, Inc.

We require a minimum of 10 MHz bandwidth centered at 2.39GHz, and AFTRCC
coordination has been obtained for a 10 MHz bandwidth centered at 2.39 GHz. Our
request reflects this coordinated result.

This effort will be expected to begin in July, 2019, and extend for up to 24 months or
contract end.

For all computations we consider the highest desired bandwidth and ERP of the
systems.

Antenna Parameters:
We are asking to use several systems, each outfitted with antennas.

The two airborne systems will be outfitted with vertical polarized omni-directional
azimuthal antennas. These are Haigh-Farr 6130-6 blade antennas, rated between
2.20 – 2.50 GHz. The antenna will be mounted to the bottom of the aircraft. The
gains are approximately 0dBi in azimuth, and between -5 dBi and +5 dBi for
elevations between the horizon and the ground, with a peak of +5 dBi at a 20°
depression angle between the horizon and ground. The datasheet with the
corresponding antenna patterns for this antenna is attached.




              600 W. Cummings Park, Suite 6500, Woburn MA 01801 www.stresearch.com


There will be a ground-based receiver/transmitter outfitted with a sectoral antenna.
This is to enable high data rate data communications between the airborne
platforms that are between 10 - 40 km away from this antenna. The antenna
selected is a Laird SA24-120-16-WB. It has a 120° azimuth and 9° elevation 3 dB
beamwidth. It will be mounted to a temporary tripod/mast, of up to 6m (18 ft) in
height, the objective being to get above any treeline obstructions and maintain line
of sight to the aircraft. The boresight elevation angle from the horizon will be
manually raised between 6.5° - 11.5° to support an aircraft flight envelope between
2.0° and 15.3° during testing. Any use near proximity to airports will comply with
FAA and local airport regulations for proximity (and therefore height) to their
facility.

Additionally, a second ground-based antenna will be utilized. It will use a vertically
polarized, 360° omnidirectional azimuth whip halfwave dipole antenna, Trellisware
TW-1161, with a 1 dBi maximum gain, between 675– 2600 MHz. The vertical
beamwidth is 70° - 90° depending on frequency. It will be mounted to a temporary
tripod/mast, of up to 6m (18 ft) in height, the objective being to get above any
treeline obstructions and maintain line of sight to the other ground node. The data
for this antenna is provided in the Trellisware DD-1494 appendix, page 11.

Connected to each antenna is a MANET data radio made by Trellisware, model TW-
950. These are tunable radios, with a maximum transmit power of 2W. The
modulation waveform is a CPM waveform. The Trellisware DD-1494 for this system
is also submitted with this application.

Power Parameters:
The MANET radio’s peak transmit power is 2 Watts.

For the airborne antenna, the maximum transmit gain is 5 dB, therefore the peak
ERP is 2 * 3.16 = 6.3W.

For the ground based node with sectoral antenna, the maximum transmit gain is 16
dB, or a factor of 39.8, therefore the peak ERP is 2 * 39.8 = 79.6 W.

For the ground based node with halfwave dipole antenna, the maximum transmit
gain is 1 dB, or a factor of 1.26, therefore the peak ERP is 2 * 1.26 = 2.5 W.


Operations / Flight Routes:
Flights are currently planned for the Boston, MA area primarily near Lawrence, MA
(KWLM) but at times extending south to operations near Cape Cod CGAS (KFMH)
and north to Portsmouth Intl (KPSM). These flight operations will occur not
continuously, but rather as discrete test events during the execution of the contract.




              600 W. Cummings Park, Suite 6500, Woburn MA 01801 www.stresearch.com


A nominal flight altitude of 8500 ft MSL is planned, but could vary from 4500 ft to
9,000 ft MSL depending on weather conditions and VMC minimum requirements.


                                          Air Node 1 w/ Omni
                                                 Blade
                                            6.3 W max ERP


                                                                                 Ground Node w/
                                                                                     Sectoral
    Air Node 2 w/ Omni                                                               Antenna
           Blade                                                                 79.6 W max ERP
       6.3W max ERP
                                                                                 18 ft
                                                                                 AGL
                    Ground Node w/                           6.5° - 11.5°
                                                                                 max
                                                              pointing
                    Omni Halfwave
                                                          elevation above
                         Dipole                                ground
                     2.5 W max ERP
                     33 ft AGL max




              600 W. Cummings Park, Suite 6500, Woburn MA 01801 www.stresearch.com


                                                                                                        BLADE ANTENNAS


      The Haigh—Farr family of rugged Blade
      antennas is available in frequencies ranging
      from UHF to upper C—band, and may be
       provided in either straight or rounded blade
      configurations.


      These blade antennas exhibit quasi—uniform
       null—free hemispherical patterns.


      These antennas have demonstrated proven

      reliability in over 30 years of high—
       performance airborne applications.


       Blade antennas are also used extensively in
                                                           FEATURES:
                                                               * Hemispherical Coverage (see patterns on next pages)
      ground—based vehicles such as race cars,                              .
                                                               * Frequencies from UHF to C—Band
      trucks, tanks, and motorcycles, to name a                e Small, Compact Footprint
      few.                                                     * Aerodynamic Design
                                                               * Common Footprint for All Models
                                                               * Built to Withstand Extreme Shock & Vibration Environments


                                                          APPLICATIONS:
                                                               * Data Links, Telemetry, Transponder
                                                               * Aircraft
                                                               e UAVs
                                                               e Helicopters
                                                               * Tactical Missiles
                                                               * Ships

                                                               * Ground—Based Vehicles
                                                               * Single or Array Implementations with Matching Power Dividers and Cables




    DESIGN CAPABILITY:
    Haigh—Farr has more than 50 years history of designing and producing exceptionally rugged, high— performance antennas. If you don‘t
    find an antenna meeting your requirements in our standard list of products, Haigh—Fair has the experience and modeling capability to
    customize a solution. Adaptations of existing designs can be done with very short lead times. Contact Haigh—Farr for a review of your
    antenna requirements.




                                                                                                                           Rev 1 01/18 approved for release

A WOMAN OWNED                                                                                           Haigh—Farr, Inc. 43 Harvey Rooad, Bedford, NH 03110
SMALL BUSINESS                         WW'HAIGH-FARR'COM                                     sales@haigh—farr.com | 603—644—6170 | Fax: 603—644—6190


                                                                                               Weight
          Round        Straight   Frequency     VSWR          5KW¹      PEAK²      Height
                                                                                              (SMA) OZ
        Blade P/N     Blade P/N   Range GHz   MAX/TYPICAL   ALTITUDE   POWER    Inches [mm]
                                                                                               [grams]




Round Blades for applic


   0 dBi
(5 dB/div)




   0 dBi
(5 dB/div)


Laird>
                                                                                                                  SA2AWB
                                                                                       Vertically Polarized Sector Antennas
    Smart Technology. Delivered."


                                              2300—27/00 MHZ VERTICALLY POLARIZED BASE STATION SECTOR ANTENNA
                                              The 60deg, 90deg and 120deg vertically polarized base station sector antenna systems offered by Laird
                                              Technologies are constructed of UV stable fiber glass radomes. The 45deg sector has a UV Stable ASA plastic
                                              radome. The radome construction gives long service life under the most demanding conditions. The antennas are
                                              constructed using corrosion resistant metal elements and a unique air dielectric system which are more stable than
                                              PCB based antenna systems because they don‘t absorb moisture, which can degrade the performance of PCB based
                                              antenna systems. The sectors come with a stainless steel scissor bracket mounting system for ease of installation
                                              and alignment.

                                              FEATURES                 |/Roks                                                                                             MARKETS
                                              *     Vertically polarized wide band performance                                                                       * WiMAX applications
                                              * 45,60,90, and 120 deg models with gains from 16dBi to 20dBi                                                          * Base station antennas
                                              * Type N female integrated connector                                                                                   * 302.11b and 802.11g wireless systems
                                              * Extremely rugged for long service life in extreme environments                                                       * Point to multi—point systems
                                              * Weatherproof                                                                                                         * Broadband wireless access
                                                                                                                                                                     * MMOS applications



                                                  Frequency range                         2300 — 2700 MHz                     2300 — 2700 MHz                       2300 — 2700 MHz                                            2300 — 2700 MHz
                                                  VSWR                                    1.5:1                                1.5:1                                1.5:1                                                       1.5:1
                                                  Impedance                               50 ohm                              50 ohm                                50 ohm                                                     50 ohm
                                                  Input power                             SOW                                 SOW                                   5OW                                                        SOW
                                                  Pole diameter (OD)                      1"— 2" (25—50mm)                     1"— 2" (25—50mm)                     1"— 2" (25—50mm)                                               1"— 2" (25—50mm)
                                                  Temperature                             —40°C to +70°C                      —40°C to +70°C                        —40°C to +70°C                                             ~40°C to +70°C
                                              __G:-!Ir'l                                  20 dBi                               17 dBi                               17 dBi                                                         16 dBi
                                              Horizontal beamwidth_ 45°                                                       60°                                   90°                                                            120°
                                              —Vertical beamwidth                         7"°                   o             8°                                s                                                              I3"
                                                  Front—to—back                           25 dB                               25 dB                                 20 dB                                                          21 dB
                                                  Mechanical downtilt                     30°                                 30°                                   30°                                                            30°
                                                  Weight                                  8.4 lbs (3.8 kg)                    6.6 Ibs (3 kg)                        6.6 Ibs (3 kg)                                             6.6 lbs (3 kg)
                                                                                          34" x 7" x 3.5"                     33.5" x 6.5" x 2.5"                   33.5" x 6.5" x 2.5"                                         33.5" x 6.5" x 2.5"
                                                  Dimensions (Lx WX H)                    (ge4 x 178 x8Omm)                     (851x 165 x64mm)                    (851x 165 x64mm)                                            (851x 165 x 64mm]

                                              WIND LOADING
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                                                  5A24 WB                         61.8 Ib                96.5 lb             62 Ib                                                      w           /f                                                                   * ‘: _
                                                                                                                                                                                                    /


                                                   SYSTEM ORDERING                                                                                                                 me         /
                                                                                 45deg 20dBi 2300—2700MHz VPOL sector antenna                                                      melrf h'LI                                                                                       |#
                                                   SA24—45—30—WB
                                                   $A24—60—17—wWB              6O0deg 17dBi 2300—2700MHz VPOL sector antenna                                                       Pnb                                             s j                                              L
                                                   sA24—90—17—WwWB               9Odeg 17dBi 2300—2700MHz VPOL sector antenna                                                           a»                     N mt                                                            ue
                                                   SA24—120—16—WB 120deg 16dBi 2300—2700MHz VPOL sector antenna                                                                              eA                                                        e.
                                                                                                                                                                                                                              "Ha"       im®   rar




                                                                                                                                                                                                         Typical azimuth and
                                                                                                                                                                                                                     elevation pattern
                                                                                                                                                                                                                     5A24—90—17—NB
                                                                                                                                                  |     .;':a   O




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Document Created: 2019-07-10 16:26:48
Document Modified: 2019-07-10 16:26:48

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