Norsat O3b 10W BUC - Manual (Page 5)

© 2013 Norsat International Inc. Page 5 of 26
Figure 1. Functional Block Diagram of Ka-band 10W BUC
IF unit 1.2.1
IF unit amplifies the transmission signal from a remote modem and delivers it to the Up-converter
unit.
LO unit 1.2.2
LO unit generates two local signals to drive two LO ports of the up-converter using double
conversion structure.
Up-converter unit 1.2.3
Up-Converter converts the IF signal (7010STC-O3b-A:1052-1788 MHz, 7010STC-O3b-B: 972-1871
MHz) to RF signal (7010STC-O3b-A: 27.652-28.388 GHz, 7010STC-O3b-B: 28.172-29.071 GHz)
and also filters out unwanted spurious and harmonics in front of SSPA. The BUC uses a double-
conversion technology to achieve better performance and cost-effective design.
SSPA unit 1.2.4
The main function of SSPA is to boost up the transmit power of the input signal to an expected level.
The SSPA includes the following modules: Divider, Power Amplifiers, and Combiner.