3753B

Overview

The 3753B is a precision coaxial phase shifter manufactured by L-3 Narda-MITEQ. It operates within a frequency range of 3.5 GHz to 12.4 GHz. The device provides a phase shift of 180 degrees at the lower frequency limit of 3.5 GHz. Key electrical specifications include an insertion loss of 0.7 dB and a return loss of 1.35 dB. The unit maintains a voltage standing wave ratio (VSWR) of 1.4 and offers high accuracy with a phase drift of ±0.5°/GHz.

Feature Summary

• Provides precise 180-degree phase shifting capability at 3.5 GHz
• Operates across a wide microwave frequency band up to 12.4 GHz
• Features low insertion loss and high return loss for signal integrity
• Ensures stable performance with minimal phase drift per gigahertz

Applications

• Phased array antenna systems requiring beam steering
• Microwave test and measurement instrumentation
• Radio frequency signal processing circuits
• Communication system calibration equipment

Procurement Notes

Verify the specific connector type, which is typically Type N Female, against your system interface requirements. Confirm that the operating frequency range aligns with your application's bandwidth needs. Ensure environmental conditions remain within standard operational limits as no extended temperature rating is documented. Check for RoHS compliance status if required by your manufacturing standards.

Selection Notes

Select this component when a fixed 180-degree phase shift is required in the 3.5 to 12.4 GHz range. Consider the low VSWR and insertion loss values for sensitive RF chains. Evaluate the physical size and weight constraints relative to other phase shifters in this frequency band. Ensure compatibility with Type N connectors if using standard coaxial infrastructure.

Part Context

This part belongs to the Narda-MITEQ line of precision coaxial phase shifters. These components are designed for high-performance microwave applications where accurate phase control is critical. The series is known for maintaining tight tolerances across broad frequency spans, supporting reliable operation in demanding RF environments.

Replacement Considerations

No direct public substitute part numbers are confirmed for this specific model. Alternative solutions may require custom design or evaluation of similar fixed-phase shifters from other manufacturers, ensuring matching frequency ranges and connector types.