US Robotics USR3500 Specifikace stáhnout pdf (Strana 33)

Rev 1.0 1/27/14 33

Reference Guide

Interfaces

Parameters

Typical Values

Output power at PCL19 (EGSM & GSM850)

5dBm

Output power at PCL15 (GSM1800 & PCS1900)

0dBm

Output power Class 3 (3G all band)

23dBm

3.2.2.2. Antenna Specifications

The main/secondary antenna must meet the requirements specified in the table

below.

The optimum operating frequency depends on the application. A dual-band or quad-

band antenna should operate in these frequency bands and have the following

characteristics.

Antennas used with the USR3500 must have a maximum antenna gain of 1 dBi for

Bands 900 and 1800, and 2.5 dBi for Band 2100.

Table 22. Antenna Specifications for USR3500

Characteristics

GSM850

and

WCDMA

Band V

WCDMA

Band VI

EGSM 900

and

WCDMA

Band VIII

DCS 1800

PCS 1900

and

WCDMA

Band II

WCDMA

Band I

TX Frequency

824 to 849

MHz

830 to 840

MHz

880 to 915

MHz

1710 to

1785 MHz

1850 to

1910 MHz

1920 to

1980 MHz

RX Frequency

869 to 894

MHz

875 to 885

MHz

925 to 960

MHz

1805 to

1880 MHz

1930 to

1990 MHz

2110 to

2170 MHz

Impedance

50Ω

VSWR

Rx max

1.5:1

Tx max

1.5:1

Typical radiated

gain

0dBi in one direction at least

1 2 ... 28 29 30 31 32 33 34 35 36 37 38 ... 62 63

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