Advanced RF Packaging Requires Hybrid PCB Stackup Technology As modern RF and microwave systems continue evolving toward: 5G and 6G communication millimeter-wave radar satellite communication aerospace RF electronics defense microwave systems high-density RF modules advanced phased-array antennas the demand for: higher integration density lower signal loss stable impedance control compact RF packaging has increased dramatically....
Why Cavity Resonance Is the Hidden Enemy in High-Dk RF Boards In high-frequency RF front-end modules—especially those operating beyond 20 GHz—engineers often encounter unexpected resonance spikes, gain ripple, and phase drift despite ideal simulations. The culprit is frequently cavity resonance—localized standing waves caused by dielectric thickness, copper enclosure geometry, or high-Dk material behavior. ...
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