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This page chronicles projects we have performed. You may narrow your search using the filter below.

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Patient Bed Tracking System At KK Women and Children's Hospital

Green Antenna is to design a system with Communication range at 150m line of sight with conducted power at 10dBm and conducted sensitivity at -108dBm.  
We design the antenna at  the bottom of DUT  and print it on the PCB.   Low pass filter was added  to reduce EMC issue.  Design simulation was performed by SEMCAD X.  Design was successfully deployed.  Test data was collected with both  Pro-type and actual PCB measurement.  
For more information available HERE.

GSM Quad Band and GPS Antenna Design For Track Fleet Tracking System

The project required 3 different types of antennas:
1.  GSM Quad band antenna.
2.  GPS antenna.
3.  433MHZ antenna.  
Green Antenna carried out all the necessory step of feasibility study, simulation, prototyping and validation.  

All In One Antenna (WWAN, BT, WIFI, 2XMIMO) For Warehouse and Cargo Fleet Tracking System

Green Antenna was responsible for the antenna design for this deivce.   2 different kinds of antenna was required:
1.  All in One antenna which includes WWAN, Blue Tooth, WIFI, 2XMIMO.  This includes:

  • 3G Penta-band antenna, including GSM 900/850/1800/1900, WCDMA Band 1, II, V, VIII (2100, 1900, 850, 900) and CDMA 850/1900.
  • BT alone Antenna 2402 MHZ to 2484 MHz.
  • WIFI 2XMIMO antenna

2.  Blue Tooth plus WIFI combo antenna.  This includes:

  • WIFI 802.11 abgn and BT shared Antenna
  • WIFI 802.11bgn and BT - 2402MHz to 2484MHz
  • WIFI 802.11an - 4900MHz to 5840MHz.

We carried out feasibility study, simulation, prototyping and validation.   The final design structure was provided in step file for client's pilot run PCB fabrication and mechanical engineering design.   The antenna's radiation efficiency, radiation pattern, return loss and isolation was included in the design report.  

OTA Test for Bluetooth Antenna

Green antenna was appointed to provide testing service for the blue tooth antenna of this printer.   Client needed to place the antenna at two different locations.  Test should be carried out with two different placement of the DUT (device under test).   To facility testing, we have fabricated bluetooth antenna passive fixtures.  The antenna was then placed at two different locations of the printer to carry out the test.   Report of Antenna Rediated Efficiency and Return Loss was submitted to and approved by client.


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