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Refer to the specifications of the pre-AMPLNA Maxim MAX2644 / MAX2691 for further details.
The following range is for reference based on >10dB gain for the pre-AMP LNAaccording to the
LNAspec. However, it should be much wider in the real test.
H/W installation
1. Connect the RF-in to; Depending the band of the RF-in, please connect the RF-in to either 1.2G
or 2.4G SMA connector.
2. Depending on the input frequency of the RF-in, set LO band switch properly,
(Select the LO which is nearest to the input frequency)
If you set by J12 jumper,
A. J12 HIGH (short pin 2 & 3):1.2G band (default LO=1050 MHz)
B. J12 Low (short pin 1 & 2) :2.4G band (default LO=1800 MHz)
If you set by external switch,
A. Set switch toward 1.2G RF-in connector if 1.2G band (default LO=1050 MHz)
B. Set switch toward 2.4G RF-in connector if 2.4G band (default LO=1800 MHz)