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HC15 Hardware Interface Description

4.2 Antenna Pad

HC15_HD_v01.000 Page 33 of 67 2007-1-19

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4.2 Antenna Pad

The antenna can be attached via contact springs.

If you decide to use the antenna pad take into account that the pad has not been intended as antenna reference

point (ARP) for the Siemens HC15 type approval. The antenna pad is provided only as an alternative option

which can be used, for example, if the recommended Hirose connection does not fit into your antenna design.

Also, consider that according to the GSM recommendations TS 45.005 and TS 51.010-01 a 50Ω connector is

mandatory for type approval measurements. This requires GSM devices with an integral antenna to be tempo-

rarily equipped with a suitable connector or a low loss RF cable with adapter.

HC15 material properties:

HC15 PCB: FR4

Antenna pad: Gold plated pad

4.3 Antenna Connector

HC15 uses an ultra-miniature SMT antenna connector supplied from Hirose Ltd. The product name is:

•U.FL-R-SMT

Figure 15: Mechanical dimensions of U.FL-R-SMT connector

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Siemens HC15 Spezifikationen Seite 33