CPI Diplexer 112900-4

CPI 112900-4 Ka-Band 4-Port Diplexer | Circular Polarized, 90 dB Isolation

The CPI 112900-4 is a high-performance Ka-Band 4-port diplexer with circular polarization, designed for uplink and downlink separation in advanced SATCOM systems. It operates over 19.7–21.2 GHz (Rx) and 29.5–31.0 GHz (Tx), delivering ultra-low insertion loss and excellent isolation (≥90 dB). Built for high power handling up to 1.0 kW per Tx port, this sealed, pressurized diplexer features precision axial ratio control and rugged brass flange faces for durability in mission-critical applications.

Key Features:

Frequency: Rx 19.7–21.2 GHz | Tx 29.5–31.0 GHz

Insertion Loss: Rx ≤0.25 dB, Tx ≤0.20 dB

Isolation: ≥90 dB (Tx/Rx & Rx/Tx), ≥20 dB (Tx/Tx & Rx/Rx)

Axial Ratio: ≤0.75 dB Rx, ≤0.75/0.50 dB Tx (split-band)

VSWR: ≤1.2:1

Power Handling: 1.0 kW CW per Tx port

Finish: Brass flanges, black paint per FED-STD-595