CPI Diplexer 114480-4

CPI 114480-4 Ka-Band 4-Port Diplexer | Circular Polarized | 19.2–21.2 / 29.0–31.0 GHz

The CPI 114480-4 is a precision-engineered Ka-band 4-port diplexer supporting circular polarization with exceptional isolation performance—up to 90 dB between Rx/Tx. Designed for dual-polarized satellite terminals, it features low insertion loss, tight axial ratio control, and high-power handling of 1 kW total. This diplexer is sealed to 5 PSIG and finished in MIL-compliant coatings for long-term durability.

Key Features:

Rx Band: 19.2–21.2 GHz

Tx Band: 29.0–31.0 GHz

Insertion Loss:
    Rx: ≤0.50 dB (19.2–20.2 GHz), ≤0.45 dB (20.2–21.2 GHz)
    Tx: ≤0.40 dB

VSWR: ≤1.25:1

Isolation:
    Tx/Rx: ≥85 dB (29.0–30.0 GHz), ≥90 dB (30.0–31.0 GHz)
    Rx/Tx: ≥90 dB
    Tx/Tx & Rx/Rx: ≥20 dB

Axial Ratio:
    Rx: 1.21 to 0.50 dB
    Tx: 0.75 to 0.50 dB

Power Handling: 500 W per Tx port (1 kW total)

Pressurization: Sealed to 5.0 PSIG

Finish: Chromate conversion coating (flanges), white-painted exterior (FED-STD-595 #17875)