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Article: Active integrated antenna elements. (microwave antennas)
- Article from:
- Microwave Journal
- Article date:
- January 1, 1991
- Author:
CopyrightCOPYRIGHT 1991 Horizon House Publications, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group. (Hide copyright information)
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Active Integrated Antenna Elements (*1)
Introduction
Recent developments in solid-state devices and microwave integrated circuits have made it possible to combine the active devices with planar antennas to form active antenna elements. In active antenna elements, active solid-state devices are integrated directly with antennas. They are sometimes called quasi-optical transmitters. The element can be used alone, or combined to form an array. The active antennas allow monolithic implementation by fabricating both active devices and antennas on a single semiconductor substrate. The circuits can be made at low cost and small size and therefore are ...