CPI LRKA2XXX-XXXXXXX 1:2 Ka-Band Redundant LNA System

CPI LRKA2XXX-XXXXXXX 1:2 Ka-Band Redundant LNA System

The CPI LRKA-1000 Series 1:2 Ka-band redundant LNA system protects two receiving paths with a shared standby low noise amplifier. If either primary LNA fails, the controller automatically switches the affected RF path to the standby unit, reducing equipment requirements while maintaining receiver availability for dual-polarization or two-channel Ka-band earth stations.

System Configuration: 1:2 redundancy
LNA Configuration: Two primary LNAs and one shared standby LNA
RF Paths: Two independent receiving paths
Band Frequency Range: 18.2–20.2 GHz, 20.2–21.2 GHz or 17.7–21.2 GHz
LNA Noise Temperature: 110 K or 120 K, depending on frequency band
System Gain: 56 dB min. standard; 46 dB min. optional
Gain Flatness: ±1.5 dB over the full band; ±0.5 dB per 40 MHz
Gain Match Between LNAs: 1 dB max.
Output P1dB: +10 dBm min. standard; +18 dBm min. optional
Input VSWR: 1.50:1 typ.
Output VSWR: 1.25:1 typ.
RF Input Connectors: WR-42 waveguide flanges
RF Output Connectors: SMA female
Plate Assembly Power: 11–28 VDC, 10 W typ.
Automatic Switchover Time: 100 ms max.
Controller Network Interface: 10/100Base-T Ethernet
Remote M&C: SNMP v1, v2c and v3; RS-232, RS-422, RS-485 and parallel I/O
Controller Power: 100–135 or 180–240 VAC, 47–63 Hz
Plate Operating Temperature: -40°C to +60°C
Compliance: CE certified, RoHS compliant and EAR99

Key Features:

• One shared standby LNA protects two primary LNAs

• Supports two receiving paths or polarization channels

• Automatic transfer of either RF path to the standby LNA

• CPI LK-20S000 Series Ka-band low noise amplifiers

• Outdoor antenna-hub plate assembly

• High-quality dual waveguide/coaxial RF switches

• Manual or automatic operation

• Independent selection of the standby LNA for either RF path

• Current monitoring, external alarm monitoring or both

• User-selectable LNA current tolerance window

• Front-panel display of RF paths, switch positions and LNA status

• Dual redundant controller power supplies

• Standard output coaxial isolators

• Optional transmit-reject filters for both RF inputs

• Optional input crossguide and output coaxial couplers

• Optional terminated offline input and output

• Ethernet, serial and parallel remote control

• Audible fault alarm

• Optional remote control panel for operation up to 4,000 ft. away