QCH-451+

RF Power Dividers/Splitters Overview

The QCH-451+ is a two-way 90-degree hybrid power splitter and combiner designed for the 225 MHz to 450 MHz frequency range. It features a 50 Ohm impedance and utilizes an SMD/SMT termination style within a compact 32 mm x 12.7 mm x 2.39 mm package. The component provides insertion loss between 0.2 dB and 0.3 dB, with isolation ranging from 21 dB to 27 dB. Amplitude imbalance is maintained at ±0.25 dB, while return loss reaches 26 dB. Maximum phase imbalance is specified at 5 degrees, ensuring high signal integrity for RF applications.

RF Power Dividers/Splitters Feature Summary

• Provides precise 90-degree phase splitting for quadrature signal generation
• Supports bidirectional operation as both power divider and combiner
• Maintains low amplitude imbalance for balanced signal distribution

RF Power Dividers/Splitters Applications

• Quadrature modulation and demodulation circuits
• Image rejection mixer architectures
• Phased array antenna feed networks

RF Power Dividers/Splitters Procurement Notes

Verify the specific datasheet revision against the manufacturer's official documentation to confirm current electrical tolerances. Ensure the operating environment remains within the specified 225 MHz to 450 MHz range to maintain performance guarantees. Confirm that the PCB layout supports the required 32 mm x 12.7 mm footprint and thermal dissipation characteristics for the intended power levels.

RF Power Dividers/Splitters Selection Notes

Select this component when a fixed 90-degree phase shift is required across the VHF band. The surface-mount design facilitates automated assembly and space-constrained layouts. Consider the maximum power handling capabilities relative to the system's peak signal levels to prevent device degradation or failure during high-power transmission scenarios.

RF Power Dividers/Splitters Part Context

Mini-Circuits manufactures this component as part of its extensive portfolio of RF passive devices. The company specializes in radio, microwave, and millimeter wave solutions for diverse industries. This specific model represents a standard hybrid coupler solution designed for reliable performance in communication systems requiring precise phase relationships between output ports.

RF Power Dividers/Splitters Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation. Engineers should evaluate alternative models based on matching frequency ranges, impedance values, and physical footprint dimensions to ensure compatibility with existing circuit designs.