Moxon monopulse pair on FR4

Σ 9.0 dBi D (~8.2 realized) · Σ F/B 12.2 dB · Δ null −38 dB · +3.0 dB array · ±32° Δ lobes · 240 mm (0.73λ) · one FR4 board · ideal coupler

⬗ stack-up: FR4 1.6 mm (εr 4.3) · 1 oz Cu (35 µm) · single top layer

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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 14.0° (≈ 24.6 m apart @ 100 m)14.0°SNR 10 dB (bg −10 dB) → SRL 8.9° (≈ 15.6 m apart @ 100 m)SNR 15 dB (bg −15 dB) → SRL 5.3° (≈ 9.2 m apart @ 100 m)5.3°SNR 20 dB (bg −20 dB) → SRL 1.3° (≈ 2.3 m apart @ 100 m)SNR 25 dB (bg −25 dB) → SRL 1.0° (≈ 1.7 m apart @ 100 m)SNR = signal − background (dB) · background = −SNRSRL — resolvable separation (°)Statistical resolution limit — two unresolved targets (Σ HPBW 40°, 0.73λ)Moxon element × array factor · FR4 detune · GLRT 1-vs-2 · CFAR 5% · 5 dB interferer · 014z model
moxon_monopulse_fr4.json