Microstrip-fed E-shaped patch antennas and diversity pairs for wireless communications

Three low-profile, broadband, E-shaped microstrip patch antennas (ESPA) are proposed for high-speed (IEEE 802.11a, 54 Mb/s) wireless computer networks and other communication systems operating in the 5.0-6.0 GHz frequency range. Two of them are diversity pairs of probe-fed ESPAs and the third is an ESPA fed directly by a microstrip line. These are intended for use in wireless network adaptor cards in the PCMCIA (also known as PC) format, allowing users of current notebook computers to upgrade to this high-speed wireless standard at a low cost.