Investigating Equations Used to Design a Very Small Normal-Mode Helical Antenna in Free Space

Table 1

Parameters for designing NMHA.

Parameters	Simulator	Equations
Self-resonant structures (, , and )	FEKO Software	Suggested [9–11]
(i) , , and; (ii) Efficiency (); (iii) Radiation field (, ); (iv) Axial ratio (AR)	FEKO Software	Not investigated yet