SPECIFICATION FOR APPROVAL

1. OVERVIEW & SPECIFICATIONS

   

   Electrical Specifications:

   Frequency Range :	700~800MHz
   VSWR :	≤ 2.0
   Impedance :	50Ω ± 5Ω
   Gain :	8 dBi
   Polarization :	Vertical
   Power Handling :	10Watt

   Mechanical Specifications:

   Connector :	N Female
   Operation Temp. :	-30℃ ~ +60℃
   Material :	Radome: Aluminum Base: ABS Mount: Zinc alloy
   Dimension (L*W*H) :	254*152 mm(with mount)
   Weight :	900g ± 20g

   3D Illustration

   

   

   

   

2. TESTING CONDITION

   • 2.1 TEST SETUP
     VSWR measurement (S11): Use ROHDE & SCHWARZ ZV8 Network Analyzer with Harbour RG-142 coaxial cable: 1000mm length in free space.
   • 2.1.1 VSWR
     The table as below summarizes concern about Return loss measurement according to The frequency band is based on FWS design. The detail be shown as appendix that is from ROHDE & SCHWARZ ZV8 Network Analyzer

     	VSWR Performance
     Freq(MHz)	700	760	800
     Free space	1.5	1.3	1.9

3. GAIN MEASUREMENT

   • 3.1 TEST SETUP
     The gain of the antenna was measured by FWS Chamber. The chamber provides less than –30 dB reflectivity from 800 MHz through 6 GHz and a 60cm diameter spherical quite zone. The measurement results are calibrated using both SCHWARZBECK horn standards. A decoupling sleeve is used to reduce feed line radiation
   • 3.2 TEST RESULT
     The peak gain is picked up as table list from Network analyzer in Chamber room, the completely gain plots also be shown as appendix.

     	Peak Gain
     Freq(MHz)	700	760	800
     Peak Gain	9.6	8.8	6.5

4. APPENDIX

   • 4.1 RETURN LOSS & VSWR

     RETURN LOSS

     

     SWR

     

   • 4.2 RADIATION PATTERN

     H-PLANE

     

     Center freq.(MHz) : 700	Plane : H Plane
     Max gain(dBi) : 9.69	Min gain(dBi) :-5.42	Avg gain(dBi) : 5.27
     -3dB1(°) : 413.50	-3dB2(°) : 302.50	HPB(°) : 111.00
     Front (dB) : 9.693	Back (dB) : 9.670	F B Ratio (dB) : 0.023

     

     Center freq.(MHz) : 760	Plane : H Plane
     Max gain(dBi) : 8.80	Min gain(dBi) : -6.81	Avg gain(dBi) : 4.46
     -3dB1(°) : 54.60	-3dB2(°) : -57.30	HPB(°) : 111.90
     Front (dB) : 8.801	Back (dB) : -3.755	F B Ratio (dB) : 12.555

     

     Center freq.(MHz) : 800	Plane : H Plane
     Max gain(dBi) : 6.55	Min gain(dBi) : -11.06	Avg gain(dBi) : 2.49
     -3dB1(°) : 419.40	-3dB2(°) : 296.50	HPB(°) : 122.90
     Front (dB) : 6.552	Back (dB) : 6.536	F B Ratio (dB) : 0.015

     E-PLANE

     

     Center freq.(MHz) : 700	Plane : E Plane
     Max gain(dBi) : 9.98	Min gain(dBi) : -26.25	Avg gain(dBi) : 3.71
     -3dB1(°) : 33.60	-3dB2(°) : -33.40	HPB(°) : 67.00
     Front (dB) : 9.985	Back (dB) : -3.509	F B Ratio (dB) : 13.494

     

     Center freq.(MHz) : 760	Plane : E Plane
     Max gain(dBi) : 7.83	Min gain(dBi) : -26.45	Avg gain(dBi) : 1.92
     -3dB1(°) : 41.20	-3dB2(°) : -36.20	HPB(°) : 77.40
     Front (dB) : 7.834	Back (dB) : -6.299	F B Ratio (dB) : 14.133

     

     Center freq.(MHz) : 800	Plane : E Plane
     Max gain(dBi) : 6.60	Min gain(dBi) : -18.99	Avg gain(dBi) : 0.57
     -3dB1(°) : 395.40	-3dB2(°) : 327.50	HPB(°) : 67.90
     Front (dB) : 6.602	Back (dB) : 6.590	F B Ratio (dB) : 0.013