Meet the Challenge of Designing Electrically Small Antennas (.PDF Download)

Antennas are vital for communications devices, although the continuing miniaturization of communications products has forced antenna designers to follow suit. However, due to the fundamental limitations in size and performance (Chu’s limit), achieving miniaturization with good antenna performance is challenging. Electrically small antennas (ESAs) are limited in bandwidth and radiating efficiency.

By understanding the effects of antenna size reduction on quality factor (Q), bandw

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