CPI Diplexer 112900-45

CPI 112900-45 Ka-Band 4-Port Diplexer | Circular Polarized, 85 dB Isolation

The CPI 112900-45 is a high-isolation, circular polarized Ka-band 4-port diplexer, optimized for modern SATCOM terminals. It operates in the 18.15–20.2 GHz receive and 29.25–30.0 GHz transmit bands, supporting high isolation (≥85 dB) between Rx/Tx paths and excellent axial ratio performance. Designed to handle 1.0 kW CW total (500 W per Tx port), this unit features durable copper alloy and zinc-nickel plated components in a pressure-sealed enclosure.

Key Features:

Frequency Band: Rx 18.15–20.2 GHz | Tx 29.25–30.0 GHz
Insertion Loss: Rx ≤0.25 dB | Tx ≤0.20 dB
VSWR: ≤1.25:1 for both Rx and Tx
Isolation: ≥85 dB (Tx/Rx & Rx/Tx) | ≥20 dB (Tx/Tx & Rx/Rx)
Axial Ratio: Rx ≤1.00 dB | Tx ≤0.50 dB
Power Handling: 1.0 kW CW total (500 W per Tx port)
Pressurization: Sealed to 5.0 PSIG
Construction: Copper alloy Rx/Tx ports, zinc-nickel plated common port
Finish: White paint, FED-STD-595 color #17875