Specifications

Product Technical Specification & Customer Design Guidelines

Interfaces

3.21 RF Interface

The Wireless CPU

s antenna connector allows transmission of radio frequency (RF)

signals from the Wireless CPU

to an external customer supplied antenna. The

connector is a micro-miniature coaxial MMCX through hole-mounted socket. A

number of suitable MMCX type, mating plugs are available from the following

manufacturers:

• Amphenol

• Suhner

• IMS Connector Systems

The nominal impedance of the antenna interface is 50 Ω.

3.21.1 RF Connection

Notes:

• The Q64 does not tolerate an antenna switch for a car kit. But this function can

be implemented externally and can be driven by using a GPIO.

• The antenna cable and connector should be selected in order to minimize

losses in frequency bands used for GSM 850/900MHz and 1800/1900MHz.

3.21.2 RF Performances

RF performances are compliant with the ETSI recommendation GSM 05.05.

The main parameters for Receiver are:

• GSM850 Reference Sensitivity = -108 dBm Static & TUHigh

• E-GSM900 Reference Sensitivity = -108 dBm Static & TUHigh

• DCS1800 Reference Sensitivity = -107 dBm Static & TUHigh

• PCS1900 Reference Sensitivity = -107 dBm Static & TUHigh

• Selectivity @ 200 kHz : > +9 dBc

• Selectivity @ 400 kHz : > +41 dBc

• Linear dynamic range: 63 dB

• Co-channel rejection: >= 9 dBc

And for Transmitter:

• Maximum output power (EGSM & GSM850): 33 dBm +/- 2 dB at ambient

temperature

• Maximum output power (GSM1800 & PCS1900): 30 dBm +/- 2 dB at ambient

temperature

• Minimum output power (EGSM & GSM850): 5 dBm +/- 5 dB at ambient

temperature

• Minimum output power (GSM1800 & PCS1900): 0 dBm +/- 5 dB at ambient

temperature

Page: 91 / 116

This document is the sole and exclusive property of WAVECOM. Not to be distributed or divulged without

prior written agreement.

WA_DEV_Q64_PTS_001-003 January 9, 2009