Specifications

No.
1505982
HUGHES PROPRIETARY
Rev.
C
Sheet 14 of 28
Form E75a Hughes Network Systems, LLC
3. OVERWIEW
3.1 GATEWAY AND LNA
The Low Noise amplifier (LNA) is an essential part of the satellite gateway receiver system. The LNA provides low noise
amplification of the signal received from the satellite.
Figure 3-1 depicts a simplified context diagram for the LNA in the Satellite gateway.
FEED
RADIO
SIGNAL
PROC.
LNA
LNA
DC POWER
RF OUTPUT
Figure 3-1. LNA Context Diagram
The LNA interfaces with the antenna feed and the Radio Signal Processor (RSP or Modems). There are two LNAs
connected to the antenna feed system to realize simultaneous reception of RHCP and LHCP signals.
To minimize loss in the signal power, the LNA will be mounted directly to the antenna feed (or very close) of the tracking
antenna. It will move along with the tracking antenna and subject to vibration and displacement due to tracking motion.