Model Number: SPK-WA-WTH-43006 Brand Name: SPK Key Specifications/Special Features: Frequency:GSM/850E: 824-849 Tx (MHz), 870-894 Rx(MHz)GSM: 880-915 Tx (MHz), 925-960 R_x(MHz)

DCS: 1,710-1,785 T_x (MHz), 1,805-1,880 R_x(MHz)

PCS: 1,50-1,909 T_x (MHz), 1,930-1,990 R_x(MHz)

Instrument: network analyzer

Setup:

• Calibrate the network analyzer by one port calibration usingO.S.L calibration kits
• Connect the antenna under test to the network analyzer
• Measures S11 (reflection coefficient) shown in Fig.1
• Generally, the S11 is less than 10dB to ensure the 90% powerinto antenna and only less than 10% power back to system