Commtel Wireless - project list

By: Commtel Wireless  09-12-2011
Keywords: Aircraft, Antenna, Scale Model

Project Experience

  • Development of a 2-30 MHz skeletal wire conical antenna
  • Assessment of the suitability of the Goedverwacth station for use as a HF receiver site
  • Interim solutions for the VHF Antenna system mounted on the tail of the Cheetah aircraft for operation Golden-Eagle
  • Experimental development models of impedance matching networks for trailing-edge, leading-edge and top-fin antennas on Cheetah B aircraft
  • Trouble-shooting the VHF Antenna System on some Cheetah-E at Louis Trichard AFB
  • Radiation pattern measurements of the VHF Antenna Systems on the Cheetah-E at Louis Trichard AFB
  • Evaluation of the VHF Antenna Systems on the Impala Aircraft at Pietersburg AFB
  • Development of Direction Finding antenna for trapped miner detection
  • Commissioning of production matching networks on Cheetah aircraft
  • Specifications for the manufacture and installation of impedance matching networks for the VHF Antenna System on the Cheetah aircraft
  • Development of V/UHF Corner Reflector antenna
  • Investigation into suitable antennas for broadband VHF/UHF mobile and man pack communications
  • Development of Broadband 2-30MHz Tactical HF Antenna
  • Development of V/UHF Yagi antennas
  • The evaluation of a 465 MHz UHF train antenna and radome
  • Evaluation of the VHF Antenna Systems on the Mirage F1 AZ Aircraft at Hoedspruit AFB
  • Radiation patterns of vertically stacked dipole arrays
  • Radiation patterns study Department of Water Affairs repeater station on Impati Hill
  • Radiation performance evaluation of a UHF train antenna
  • Evaluation of Antennas on Cheetah-D aircraft
  • Radiation performance of a Q-Tenna UHF train antenna
  • Radiation performance of a Q-Tenna (version 2) and GP450B UHF train antenna
  • Radiation performance of HR-Smith UHF aircraft antennas
  • VHF/UHF Antenna System evaluation on the Cheetah-E aircraft
  • Evaluation of antennas radiation performance on the ORYX helicopter
  • Radiation performance of an HR- Smith V/UHF aircraft antenna
  • Pattern evaluation of Fleetcall V/UHF antennas on Brixton tower
  • Design of a 157 MHz FSK receiver
  • Radiation performance of a Chelton V/UHF aircraft antenna
  • Radiation performance of an HR-Smith V/UHF aircraft antenna
  • Evaluation of the Comnitech HF ATU/WHIP combination
  • Validation of Rooivalk helicopter numerical models
  • Rooivalk Antenna evaluation using the Antenna System Evaluation Package (ASEP)
  • Measured coupling between communications Antennas mounted on a Rooivalk helicopter scale model
  • The Rooivalk helicopter HF antenna near fields
  • The Rooivalk helicopter HF Antenna Communications -
  • Evaluation of Antennas on Hercules C-130H Aircraft
  • Patterns and Antenna System Evaluation Package (ASEP) results relevant to flight test measurement
  • TV U/VHF Repeater system design
  • Limited Dakota simulations and scale model measurements in the frequency ranges 118MHz - 175MHz and 220MHz - 420MHz
  • Review of Antenna, propagation and EMC aspects of Atlas development specification (SFTD-1400-62/B1)
  • Evaluation of various VHF/UHF Aircraft Antennas
  • Investigating 2 techniques for reducing coupling between cockpit and VHF Antennas for the Pilatus PC7 (Astra) trainer aircraft
  • Evaluation of the VHF Antennas on the Pilatus PC 7 (Astra) trainer aircraft
  • Investigating additional antenna configurations/positions to improve communications on the Pilatus PC7 MK II
  • Antenna placement study on the Pilatus Astra
  • Flight trials for verification of the overall antenna performance on the Pilatus PC7 (Astra) trainer aircraft
  • Evaluation of the effect of the Radome on the performance of the top fin Sensor Systems antenna on the Pilatus PC7 MK II (Astra) trainer aircraft
  • Investigating additional antenna configurations/positions to improve communications on the Pilatus PC7 MK II
  • Measurement of the Azimuth and Elevation Planes Radiation Patterns of Three Cellular Telephone Antennas
  • Measurement of the performance of cellular telephone antennas
  • Flight tests with modified VHF2 antenna placement (Z9) on the Pilatus Astra
  • Development of a cellular antenna panel
  • Single loop radiation patterns of a crossed loop / monopole DF antenna with different ground conditions
  • Radiation performance of 5 HR-Smith V/UHF cap antennas (Part No.: 10-141-4
  • Repeated flight tests with modified VHF2 antenna placement on the Pilatus Astra.
  • Pattern Evaluation of the Existing FM Antenna on the BK117
  • In Flight VSWR Measurements for the FM Antenna of the BK117
  • Evaluation of Different Antenna Positions on the BK117 Helicopter
  • TFDC Antenna Upgrade and Characterization for Ground Air Communication Assessment
  • Evaluation of a Ferrite loaded broadband HF Antenna
  • Development of a Receiving Antenna for the Radio Energy Dispenser (RED)
  • Software Requirements Specifications for the Radio Energy Dispenser System Command Line Transmitter Controller
  • Radio Energy Dispenser Software Design Document for the Remote Radio Vending Station
  • Pattern Evaluation and Optimization of different Mast Configurations
  • Pattern Evaluation and Optimization of different Mast Configurations (Version 2
  • Impedance Characteristics of a Collins VHF and UHF Aircraft Antennas
  • Software Requirements Specifications for the Un-metered Radio Energy Dispenser
  • Software Specification for the Radio Energy System Command Line Transmitter Controller
  • Documentation of the Firmware for the Radio Energy Dispenser Systems
  • Pilatus Aircraft Antenna Systems Performance Requirement Specifications
  • Specification of the Communication Protocols for Radio Controlled Energy Products According to Open Systems Interconnect (OSI) Model
  • Specification of the Functional Application Requirements of the Unmetered Radio Energy Dispenser
  • Metro Paging Network – Phase I Electronic Paging System Functional Specifications
  • Radiation and Impedance Performance of LT420X22 Antennas in the Frequency Range 1.88 GHz to 1.93 GHz
  • Layout and Evaluation of Airborne Antennas, in the Frequency Range 30 MHz to 4.4 GHz, Mounted on the New Pilatus Trainer
  • Experimental Development Models of Low Profile Electrically Small Mobile Antennas for Orbcomm -VHF Satellite Communications
  • Experimental Development Model of an 8" Diameter Hybrid Monofilar Spiral - Curl Antenna Mounted 3.5" Above A Finite Ground Plane At 150 MHz
  • Advanced Development Model of a Small VHF Hybrid Monofilar Spiral - Curl Antenna
  • New Generation Base-Station Panel Antennas for Cellular Band Communications
  • New Generation Base Station Panel Antennas for Tetra Band Communications.
  • Wide band 8, 4 & 2-Ways Power Dividers 800-2500 MHz.
  • Dual-band (Cell / PCS) directional and omni-directional indoor antennas.
  • Evaluation of the VOR/LOC Antenna Performance Mounted on the CHALLENGER 601 Aircraft
  • New Generation Base-Station Panel Antennas for Cellular Band Communications
  • Low PIM VHF and UHF omni-directional and directional base station antennas
  • Wide-band VHF and UHF mobile antenna
  • Tri-band (Cell / PCS / WLL) indoor antennas
  • 35.25 GHz Bi-Static Radar Antenna
  • 2-4GHz, 8-18GHz & 26.5-40GHz Dual Polarized, Dual Offset Radar Antennas
  • X-Band Power Dividers
  • 1.5 GHz low Axial Ratio RHCP and LHCP High Gain antenna
  • X-Band Box Horn Array
  • 7 GHz 18 dBic Patch array
  • X-Band Slotted Waveguide Array Coastal Radar
  • High Power Near-Field Target Pulsed Energy Transfer Antenna
  • Evaluation of Six Communications and Navigations Antennas Mounted on the Regional Jet CRJ200 Aircraft

Keywords: Aircraft, Aircraft Antenna, Aircraft Antennas, Antenna, Antenna System, Antenna Systems, Scale Model, System Evaluation,

Other products and services from Commtel Wireless

09-12-2011

Commtel Wireless - overview

Companies engaged with aircraft communication systems are required to determine the antennas sitting on the aircraft. Overview - Experience and Capabilities in Aircraft Communication Systems Projects. Design, manufacture and commission of matching networks for aircraft antennas. Evaluation of radiation patterns from antennas mounted on aircraft. Evaluation of coupling between antennas mounted on aircraft.


09-12-2011

Commtel Wireless - measured coupling between communication antennas mounted on aircraft scale model

The matching losses presented by the monopoles representing the V/UHF antennas are removed in the band when the measured couplings between these antennas are above the measurement system sensitivity. Indication of the coupling between the communication antennas at the respective communication frequencies is determined from measurements on a suitable scale model of the aircraft.


09-12-2011

Commtel Wireless - services

The company has developed antennas spanning a large frequency band—from 2MHz to 40GHz including HF broadband base station and tactical antennas, V/UHF antennas for base station and mobile applications, Microwave antennas for radar and other applications in the C, X, Ku, K & Ka bands and other RF circuits.


09-12-2011

Commtel Wireless - validation of aircraft numerical models

Selected two dimensional pattern measurements are then performed on the l/30th and l/20th scale models using a compact range suitable for the frequency range 2 GHz-18 GHz and a shielded anechoic chamber suitable for measurements in the frequency range 300 MHz-3 GHz.