Coplanar monopulse pair (2× 1-layer quasi-Yagi)

Σ 9.8 dBi (+2.95 dB array) · Σ F/B 10.2 dB · Δ null −25 dB · ±28° Δ lobes · 240 mm (0.73λ) · ideal coupler · 1 layer · slotline balun

⬗ 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)

0510510152025−5 dB bg · harsh−15 dB bg · nominalSNR 5 dB (bg −5 dB) → SRL 11.9° (≈ 20.9 m apart @ 100 m)11.9°SNR 10 dB (bg −10 dB) → SRL 8.1° (≈ 14.2 m apart @ 100 m)SNR 15 dB (bg −15 dB) → SRL 5.0° (≈ 8.7 m apart @ 100 m)5.0°SNR 20 dB (bg −20 dB) → SRL 1.3° (≈ 2.3 m apart @ 100 m)SNR 25 dB (bg −25 dB) → SRL 1.0° (≈ 1.8 m apart @ 100 m)SNR = signal − background (dB) · background = −SNRSRL — resolvable separation (°)Statistical resolution limit — two unresolved targets (Σ HPBW 36°, 0.73λ)coplanar element (full-wave) × array factor · GLRT 1-vs-2 · CFAR 5% · 5 dB interferer · 014z model
coplanar_monopulse.json