Small antennas suit FM, UWB bands

摘要

Antennas continue to get smaller and cheaper. For example, Laird Technologies' miniature Activv internal antenna circuit combines FM, impedance matching, and signal amplification. It replaces the company's Radio-Ant antenna and provides 5-dB greater sensitivity over a frequency range of 76 to 108 MHz in a 25% smaller package. Prices range from 50 cents to $2 (vol-ume quantities), depending on the level of customization.