6 key points about ideal directional coupler directivity
Ideal directional coupler directivity exceeds 30dB (40dB for precision models), requires precise λ/4 spacing (±0.01mm tolerance), depends on port matching (VSWR <1.05), improves with ferrite loading (2-18GHz range), degrades <0.5dB after 10^9 cycles, and needs -55dB isolation at 1GHz for optimal forward/reflected wave separation. What Directivity Means Directional coupler directivity is one of the most […]
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