XT65/XT75 Hardware Interface Overview
4.3 Antenna Connector
s
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
50
Ω
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 25m
Ω
Outside 15m
Ω
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
2
, 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
2
, 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:
100M
Ω
min. at high humidity
500M
Ω
min. when dry
Exposure to 40°C, humidity of
95% for a total of 96 hours