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 17 of 171
The formula for each channel can be given as:
i
V
=
i
U
+
2
i
U
·
i
dcp
cf
With V
i
= compensated signal of channel i, (i = x, y, z)
U
i
= input signal of channel i, (i = x, y, z)
cf = crest factor of exciting field (DASY parameter)
dcp
i
= diode compression point (DASY parameter)
From the compensated input signals, the primary field data for each channel can be evaluated:
E- Field Probes:
i
E
=
ConvFNorm
v
i
i
H-Field Probes:
i
H
=
i
V
f
fafaa
iii
2
210
With V
i
= compensated signal of channel i, (i = x, y, z)
Norm
i
= senor sensitivity of channel i, (i = x, y, z), µV/ (V/m)
2
ConvF = sensitivity enhancement in solution
a
ij
= sensor sensitivity factors for H-field probes
f = carrier frequency (GHz)
E
i
= electric field strength of channel i in V/m
Hi = magnetic field strength of channel i in A/m
The RSS value of the field components gives the total field strength (Hermitian magnitude):
E
tot
=
222
zyx
EEE
The primary field data are used to calculate the derived field units.
SAR =
1000
2
tot
E
With SAR = local specific absorption rate in mW/g
E
tot
= total field strength in V/m
σ = conductivity in (mho/m) or (Siemens/m)
ρ = equipment tissue density in g/cm
3
Note that the density is set to 1, to account for actual head tissue density rather than the density of the tissue
simulating liquid.