Microwave Connectors and Return Loss (SWR) True or False: A good microwave connector should have a high standing-wave ratio (SWR).

Introduction / Context:
SWR (standing-wave ratio) is a measure of mismatch between a connector (or any component) and the system impedance. In microwave engineering, mismatch leads to reflections, ripple in passbands, and wasted power.

Given Data / Assumptions:

• System reference impedance (commonly 50 Ω or 75 Ω).
• Connector is used at microwave frequencies.
• Objective is minimal reflection and maximum power transfer.

Concept / Approach:

Lower SWR corresponds to lower reflection coefficient |Γ| and higher return loss. A well-designed connector aims for SWR close to 1.0 over its specified band. High SWR indicates substantial mismatch, causing ripple, distortion, and heating.

Step-by-Step Solution:

Verification / Alternative check:

Datasheets list return loss and VSWR targets; better-grade connectors have higher return loss (e.g., > 20 dB) meaning lower SWR.

Why Other Options Are Wrong:

Any conditional “True” variants contradict basic impedance-matching practice; performance expectations do not reverse at short lengths or high frequencies.

Common Pitfalls:

Confusing “high return loss” (good) with “high SWR” (bad). Return loss high = reflections small; SWR high = reflections large.

Final Answer:

False