Ribbed-frame PCB Yagi (CNC FR4)

9.3 dBi · F/B 13.5 dB · S11 −14 dB · skeletal frame + tapered side ribs · F/worst-3D-lobe 13.5 dB

⬗ stack-up: FR4 1.6 mm (εr 4.3) · 1 oz Cu (35 µm) · ribbed frame

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Statistical resolution limit (SRL) — closest two targets tellable apart vs SNR · hover a point (session 014z DF model)

051015510152025−5 dB bg · harsh−15 dB bg · nominalSNR 5 dB (bg −5 dB) → SRL 16.9° (≈ 29.8 m apart @ 100 m)16.9°SNR 10 dB (bg −10 dB) → SRL 10.8° (≈ 19.0 m apart @ 100 m)SNR 15 dB (bg −15 dB) → SRL 6.5° (≈ 11.3 m apart @ 100 m)6.5°SNR 20 dB (bg −20 dB) → SRL 4.3° (≈ 7.4 m apart @ 100 m)SNR 25 dB (bg −25 dB) → SRL 1.1° (≈ 2.0 m apart @ 100 m)SNR = signal − background (dB) · background = −SNRSRL — resolvable separation (°)Statistical resolution limit — two unresolved targets (beam HPBW 60°)real full-wave az beam · sequential-lobing Δ · GLRT 1-vs-2 · CFAR 5% · 5 dB interferer · 014z model
ribbed_yagi.jsonribbed_yagi_ribstudy.jsonribbed_yagi.step