**For single-turn circular loop inductance:**

*[r_loop - loop radius in meters; r_conductor - conductor radius in meters]*

**For multi-turn circular loop inductance:**

*[k_nagaoka - Nagaoka coefficient; l_coil - length of the coil in meters; r_loop - radius of the loop in meters]*

**For octagonal loop antenna inductance:[F W Grover]**

*[L - microhenries; N - turns; s - section side length cm; r - loop circumradius in cm; b - coil length in cm]*

**For hexagonal loop antenna inductance:[F W Grover]**

*[L - microhenries; N - turns; s - section side length cm; r - loop circumradius in cm; b - coil length in cm]*

**For square loop antenna inductance:[F W Grover]**

*[L - microhenries; N - turns; s - section side length cm; r - loop circumradius in cm; b - coil length in cm]*

**Loss resistance:**

**Surface resistance:**

**Radiation resistance for circular loop:**

**Radiation resistance for octagon, hexagon and square loop:**

**Radiation efficiency:**

**Q factor:**

**Capacitor voltage:**

**Loop current:**

**Bandwidth:**

**Single-loop capacitance:**

*[l_perimeter - conductor perimeter length in meters]*

**Multi-turn loop capacitance:**

*[Based on David W Knight's (G3YNH) paper "The self-resonance and self-capacitance of solenoid coils: applicable theory, models and calculation methods"]*