Extra exam question E9F05
Subelement E9, ANTENNAS AND TRANSMISSION LINES· Group E9F
What is microstrip?
- A.Special shielding material designed for microwave frequencies
- B.Miniature coax used for low power applications
- C.Short lengths of coax mounted on printed circuit boards to minimize time delay between microwave circuits
- D.Precision printed circuit conductors above a ground plane that provide constant impedance interconnects at microwave frequencies (correct answer)
WhyMicrostrip is precision printed circuit conductors above a ground plane that provide constant impedance interconnects at microwave frequencies. Microstrip is precision printed circuit board conductors running above a ground plane, designed to provide a constant, well-controlled characteristic impedance for interconnects at microwave frequencies, where even short PCB traces behave like transmission lines, answer D. It isn't special shielding material, isn't miniature coax, and isn't short lengths of coax mounted on a board, microstrip is specifically a planar, PCB-trace-and-ground-plane transmission line structure.
Published 2026-08-28 · Last updated 2026-08-28 · Question text is verbatim from the 2024-2028 NCVEC Element 4 pool (public domain); the explanation above is original writing, see our methodology.
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