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CHAPTER 5
T he following vendor and parts Information is provided as a recommended solution for acquiring host interface,
modem antenna, and evaluation board components. You are also welcome to research and recommend your own
solution for acquiring needed components.
5.1
Host Interface
5.1.1 Modem I/O Connector
For the modem-to-host interface, use the 36-pin ZIF-style serial connector. Use the following
descriptions to order connectors from ELCO:
•
Part number 04 6240 036 003 800
Motorola recommends that you use same connector for the host-to-modem interface connection.
5.1.2 Interface Cable
The serial interface cable is a 36-pin 0.5 mm pitch flexible printed circuit (FPC). Use the
following descriptions to order interface cables from Parlex Corporation:
0.5MM-36-xx-B Mates with ELCO 6240 series connector
where xx indicates length in inches. "Mates with ELCO 6240 series connector" indicates that the
FPC is to be connected to an ELCO connector.
5.2
Antennas
5.2.1 GSM Antenna
The style of the antenna is highly dependent on the particular requirements of the project.
Frequencies
Gain
Impedance
VSWR
d15 Modem Integration and Application Developers Guide version draft 0.53
Hardware
GSM 900: TX band 880-915MHz, RX band 925-960MHz.
DCS: TX band 1710-1785MHz RX band 1805-1880MHz.
PCS: TX band 1850-1910MHz, RX band 1930-1990MHz.
0 dBi (Unity) gain or greater.
50 Ohm
typical 1.5:1
Page 72 of 181
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