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PCB-Loop-Antenna-Calculator.php    11753 Bytes    15-11-2023 14:42:29


PCB Loop Antenna Calculator


Tuned SINGLE Loop with Matching






Frequency [MHz]
 
Length A [mm]
 
Length B [mm]
 
Impedance [Ω]
 
Copper Tracewidth [mm]
 
Propagation Speed Factor
See Note 1



RAD [Ω]
 
TRACE [Ω]
 
ESR [Ω]
 
Efficiency [%]
 
Gain [dB]
 
Loop Inductance [nH]
Series Capacitance [pF]
C1
Shunt Capacitance [pF]
C2









✈ Some Design Notes



1
Propagation Speed Factor takes into account, that waves travel much faster in air than on pcb. The result is somehow a mixture.
2
The design is based on Silicon Labs AN639.
3
The Matching Capacitor is directly at the BNC (output). Introducing long coaxial cables (100 pF / m) may ruin your day. Use a Preamplifier instead.




✈ Share your thoughts



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t1 = 6586 d

t2 = 288 ms

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