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XT65/XT75 Hardware Interface Overview

4.3 Antenna Connector

XT65_XT75_HO_v00.130 Page 23 of 67 2006-10-12

Confidential / Preliminary

4.3 Antenna Connector

For GSM and GPS, XT65/XT75 uses an ultra-miniature SMT antenna connector supplied from Hirose Ltd. The

product name is:

•U.FL-R-SMT

The position of the antenna connector on the XT65/XT75 board can be seen in Section 4.1.

Figure 4: Mechanical dimensions of U.FL-R-SMT connector

Table 7: Product specifications of U.FL-R-SMT connector

Item Specification Conditions

Ratings

Nominal impedance 50Ω Operating temp:-40°C to + 90°C

Operating humidity: max. 90%

Rated frequency DC to 3GHz

Mechanical characteristics

Female contact holding force 0.15N min Measured with a ; 0.475 pin

gauge

Repetitive operation Contact resistance:

Center 25mΩ

Outside 15mΩ

30 cycles of insertion and disen-

gagement

Vibration No momentary disconnections of

1µs;

No damage, cracks and looseness

of parts

Frequency of 10 to 100Hz, single

amplitude of 1.5mm, acceleration

of 59m/s

, for 5 cycles in the

direction of each of the 3 axes

Shock No momentary disconnections of

1µs.

No damage, cracks and looseness

of parts.

Acceleration of 735m/s

, 11ms

duration for 6 cycles in the direc-

tion of each of the 3 axes

Environmental characteristics

Humidity resistance No damage, cracks and looseness

of parts.

Insulation resistance:

100MΩ min. at high humidity

500MΩ min. when dry

Exposure to 40°C, humidity of

95% for a total of 96 hours

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