Flexi RF Inc
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Feb 11, 2026
9:09 PM
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Why Do mmWave Modules Lose Signal Integrity?
Signal degradation in compact mmWave modules often stems from transition losses—not just PCB trace design. As frequencies rise above 40 GHz, connector geometry, launch alignment, and mechanical repeatability directly affect insertion loss and return loss.
Canadian telecom and radar developers face this regularly. Smaller modules mean tighter spacing, and tighter spacing increases electromagnetic coupling risk.
The Hidden Issue: Transition Discontinuity
Even when simulations look clean, real-world builds introduce:
Slight axial misalignment
Surface finish variation
Inconsistent mating depth
PCB stack-up tolerance shifts
At mmWave frequencies, a 0.05 mm deviation can measurably affect VSWR. This is why transition integrity between board layers or modules becomes a system-level design concern.
Connector Choice Impacts Repeatability
Manufacturers like Flexi RF Inc, known globally including across Canada for RF and microwave components, support high-frequency interconnect solutions engineered for mechanical precision and electrical stability.
Engineers increasingly evaluate compact push-on interconnect options such as the WSMP adapter when:
Designing phased array modules
Building test fixtures above 50 GHz
Managing dense RF packaging
Fact: At mmWave, mechanical repeatability equals electrical consistency.
Takeaway
If high-frequency performance shifts between prototypes, review the transition design first. In dense RF modules, connector precision often determines system stability more than the PCB layout itself.
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