DreamCatcher ME1000 RF, Quick Start Manual

Page: 22 / 23

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ME1000 RF Circuit Design
Quick Start Guide - 22/23
IF Bandpass Filter (V1.00) Min Typical Max Unit Remarks / Descriptions
Lower 3 dB frequency 41 - - MHz Only min limit required
Upper 3 dB frequency - - 57 MHz Only max limit required
Insertion loss @ 50 MHz - 3 5 dB
Insertion loss @ 43 MHz - 5 7 dB
Insertion loss @ 57 MHz - 5 7 dB
Input return loss @ 50 MHz 10 17 19 dB
Output return loss @ 50 MHz 10 14 17 dB
Downconverter Mixer Min Typical Max Unit Remarks / Descriptions
Power supply voltage 3 3.3 3.6 V
LO to RF isolation @ 818 MHz 5 7 9 dB into 50 a Ω load
LO to IF isolation @ 818 MHz 13 15.5 18 dB into 50 a Ω load
Input return loss @ 868 MHz 2 3 5.5 dB RF
Input return loss @ 818 MHz 1.5 2.5 4 dB LO
Input return loss @ 50 MHz 2 4 6 dB IF
RF feedthrough 14 15 17 dB
Conversion loss @ 868 MHz 0.5 2 3.5 dB
RF@ –15 dBm, 868 MHz; LO @
–4 dBm, 818 MHz
Upconverter Mixer Min Typical Max Unit Remarks / Descriptions
Power supply voltage 3 3.3 3.6 V
LO to RF isolation @ 818 MHz 6 8 11 dB into a 50 Ω load
LO to IF isolation @ 818 MHz 7 10.5 12 dB into a 50 Ω load
Input return loss @ 868 MHz 3 5 8 dB IF
Input return loss @ 818 MHz 8 10 12 dB LO
Input return loss @ 50 MHz 1.5 2.5 4 dB RF
RF feedthrough @ 50 MHz 7 12 16 dB
Conversion loss @ 868 MHz 3 5 - dB
RF @ –15 dBm, 50 MHz; LO @
–3 dBm, 818 MHz
IF Amplifier Min Typical Max Unit Remarks / Descriptions
Power supply voltage 3 3.3 3.6 V
Small-signal gain @ 50 MHz (Gain Level =
10)
7 9 12 dB
Small-signal gain @ 50 MHz (Gain Level =
12)
11 12.5 16 dB
Small-signal gain @ 50 MHz (Gain Level =
15)
14 16 20 dB
Input return loss 10 12.5 17 dB
Antenna Min Typical Max Unit Remarks / Descriptions
Frequency range 806 - 960 MHz
Gain at operating range - 2.5 - dBi
VSWR - <2 - -
Polarization - Vertical - -
Length - 210 - mm