Dipol calibration

FCC ID: N7NAC750

RF Exposure Info

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FCCID_239711

Schmid & Partner Engineering AG Staffelstrasse 8, 8045 Zurich, Switzerland, Telefon +41 1 280 08 60, Fax +411 280 08 64 DASY3 Dipole Validation Kit Type: D1800V2 Serial: 294 Manufactured: March 22, 2001 Calibrated: April 19, 2001

Schmid & Partner Engineering AG Zeughausstrasse 43, 8004 Zurich, Switzerland, Phone +41 1 245 97 00, Fax +41 1 245 97 79 Calibration Certificate 1800 MHz System Validation Dipole Type: D1800V2 Serial Number: 294 Place of Calibration: Zurich Date of Calibration: Apr. 19, 2001 Calibration Interval: 24 months Schmid & Partner Engineering AG hereby certifies, that this device has been calibrated on the date indicated above. The calibration was performed in accordance with specifications and procedures of Schmid & Partner Engineering AG. Wherever applicable, the standards used in the calibration process are traceable to international standards. In all other cases the standards of the Laboratory for EMF and Microwave Electronics at the Swiss Federal Institute of Technology (ETH) in Zurich, Switzerland have been applied. Calibrated by: Zéx K Approved by: /\/%@Q\p

1. Measurement Conditions The measurements were performed in the flat section of the new generic twin phantom filled with head simulating sugar solution of the following electrical parameters at 1800 MHz: Relative permitivity 39.7 +5% Conductivity 1.36 mho/m £+10% The DASY3 System (Software version 3.1¢c) with a dosimetric E—field probe ET3DV6 (SN:1507, conversion factor 5.57 at 1800 MHz) was used for the measurements. The dipole feedpoint was positioned below the centre marking and oriented parallel to the body axis (the long side of the phantom). The standard measuring distance was 10mm from dipole centre to the solution surface. The included distance holder was used during measurements for accurate distance positioning. The coarse grid with a grid spacing of 15mm was aligned with the dipole. The 5x5x7 fine cube was chosen for cube integration. Probe isotropy errors were cancelled by measuring the SAR with normal and 90° turned probe orientations and averaging. The dipole input power (forward power) was 250mW +3 %. The results are normalised to 1 W input power. 2. SAR Measurement Standard SAR—measurements were performed with the head phantom according to the measurement conditions described in section 1. The results (see figure) have been normalised to a dipole input power of 1 W (forward power). The resulting averaged SAR—values are: averaged over 1 cm‘ (1 g) of tissue: 38.4 mW/g averaged over 10 cm‘ (10 g) of tissue: 20.0 mW/ig Note: If the liquid parameters for validation are slightly different from the ones used for initial calibration, the SAR—values will be different as well. The estimated sensitivities of SAR—values and penetration depths to the liquid parameters are listed in the DASY Application Note 4: ‘SAR Sensitivities‘.

3. Dipole Impedance and Return Loss The impedance was measured at the SMA—connector with a network analyser and numerically transformed to the dipole feedpoint. The transformation parameters from the SMA—connector to the dipole feedpoint are: Electrical delay: 1.216 ns (one direction) Transmission factor: 0.997 (voltage transmission, one direction) The dipole was positioned at the flat phantom sections according to section 1 and the distance holder was in place during impedance measurements. Feedpoint impedance at 1800 MHz: Re{Z} = 51.8 0 Im {Z} = —2.8 a Return Loss at 1800 MHz —29.7 dB 4. Handling The dipole is made of standard semirigid coaxial cable. The centre conductor of the feeding line is directly connected to the second arm of the dipole. The antenna is therefore short—circuited for DC—signals. Do not apply excessive force to the dipole arms, because they might bend. If the dipole arms have to be bent back, take care to release stress to the soldered connections near the feedpoint; they might come off. After prolonged use with 40W radiated power, only a slight warming of the dipole near the feedpoint can be measured.

04/M17/01 Validation Dipole D1800V2 SN:294, d = 10 mm Frequency: 1800 MHz; Antenna Input Power. 250 [mW] Generic Twin Phantom; Flat Section; Grid Spacing. Dx = 15.0, Dy = 15.0, Dz = 10.0 Probe: ET3DVS — SN1507; ConvF(5.57,5.57,5.57) at 1800 MHz; IEEE1528 1800 MHz ; a = 1.36 mho/m &, = 39.7 p = 1.00 g/em* Cubes (2): Peak: 18.0. mWig £ 0.04 dB, SAR (1g): 9.59 mWig £ 0.04 dB, SAR (10g): 4.99 mWig + 0.04 dB, (Worst—case extrapolation) Penetration depth: 8.3 (7.7, 9.4) [mm] Powerdrift: —0.04 dB SAR., To [mW/g] 1.00E4+1 9.00E+0 8.00E+0 7.00E+0 6.00E+0 / 5.00E+0 *« 4.00E+0 3.00E+0 2.00E+0 = 1.00E+0 Schmid & Partner Engineering AG, Zurich, Switzerland

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Document Created: 2002-04-16 21:48:15
Document Modified: 2002-04-16 21:48:15
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