J Plus, Inc
J Plus Proprietary and Confidential
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3.6
RF Block Description
JLT622P is based on LTE TDD technology consisting of downlink and uplink transmitted through the same
frequency. Explanation for each path is described below:
Figure 4: RF Block Diagram
A. Downlink (Tx)
RF signal from transceiver generates the maximum output when passing BALUN, Gain Block and PA.
This maximized output is transmitted via Antenna after out of band’s noise is removed via Filter and
then RF Switch.
B. Uplink (Rx)
The RF signal from Antenna passes through RF Switch after out of band’s noise is removed via Filter.
Original signal is amplified via LNA and provided to the transceiver.
