Recently I found that the printed spital monopole antenna can be very small.(0.06λ*0.06λ).But there's no a textbook or a paper that can tell me how to design the printed spiral monopole antenna. Could anybody tell me how to design this antenna or give me a reference book or paper about how to design the printed spiral monopole antenna.
Actually, you can just type spiral antenna in google, like just i did.
Archimedes Spiral Antenna
i got for example the page of Cebik, he designs spiral antenna
with NEC (NEC4).
Here is the link https://www.cebik.com/amod/amod89.html