Product Info
Report No: CCISE191202301-V01
Shenzhen Zhongjian Nanfang Testing Co., Ltd. Project No.: CCISE1912023
No. B-C, 1/F., Building 2, Laodong No.2 Industrial Park, Xixiang Road,
Bao’an District, Shenzhen, Guangdong, China
Telephone: +86 (0) 755 23118282 Fax: +86 (0) 755 23116366, E-mail: info@ccis-cb.com Page 12 of 171
8.1 E-Field Probe
The SAR measurement is conducted with the dosimetric probe (manufactured by SPEAG). The probe is
specially designed and calibrated for use in liquid with high permittivity. The dosimetric probe has special
calibration in liquid at different frequency. This probe has a built in optical surface detection system to prevent
from collision with phantom.
E-Field Probe Specification
<EX3DV4 Probe>
Construction
Symmetrical design with triangular core Built-in
shielding against static charges PEEK
enclosure material (resistant to organic
solvents, e.g., DGBE)
Fig. 8.2 Photo of E-Field Probe
Frequency
Directivity
10 MHz to 6 GHz; Linearity: ± 0.2 dB
± 0.3 dB in HSL (rotation around probe axis)
± 0.5 dB in tissue material (rotation normal to
probe axis)
Dynamic Range
10 µW/g to 100 mW/g; Linearity: ± 0.2 dB
(noise: typically < 1 µW/g)
Dimensions
Overall length: 330 mm (Tip: 20mm)
Tip diameter: 2.5 mm (Body: 12mm)
Typical distance from probe tip to dipole
centers: 1 mm
E-Field Probe Calibration
Each probe needs to be calibrated according to a dosimetric assessment procedure with accuracy better
than ± 10%. The spherical isotropy shall be evaluated and within ± 0.25 dB. The sensitivity parameters
(Norm X, Norm Y and Norm Z), the diode compression parameter (DCP) and the conversion factor (ConvF)
of the probe are tested. The calibration data can be referred to appendix E of this report.
8.2 Data Acquisition Electronics (DAE)
The Data acquisition electronics (DAE) consists of a highly sensitive
electrometer-grade preamplifier with auto-zeroing, a channel and gain-
switching multiplexer, a fast 16 bit AD-converter and a command decoder
and control logic unit. Transmission to the measurement server is
accomplished through an optical downlink for data and status information
as well as an optical uplink for commands and the clock. The input
impedance of the DAE is 200 MOhm; the inputs are symmetrical and
floating. Common mode rejection is above 80 dB.
Fig. 8.3 Photo of DAE