RF connector and antenna switch

There are two antenna connectors in KL8 module. One is the connector for external (car kit) antenna and it has an integrated mechanical switch function. This connector is integrated with the system connector. The other connector is used for connecting the coaxial cable which leads to the communicator's own antenna.

Table 42. External antenna connector and switch

Parameter

Min.

Typ.

Max.

Unit/Notes

Operating frequency range

880

1880

MHz

Insertion loss in GSM band

0.2

dB

Insertion loss in DCS band

0.4

dB

Isolation in GSM band

14

dB

Isolation in DCS band

12

dB

Nominal impedance

50

ohm

VSWR, GSM band

1.3

VSWR, DCS band

1.5

Table 43. Internal antenna connector

Parameter

Min.

Typ.

Max.

Unit/Notes

Operating frequency range

880

1880

MHz

Insertion loss in GSM band

0.2

dB

Insertion loss in DCS band

0.4

dB

Nominal impedance

50

ohm

VSWR

1.5

Was this article helpful?

0 0

Post a comment