Microstrip antennas Proceedings of the IEEE（微带天线IEEE学报》上）.pdfVIP

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Microstrip antennas Proceedings of the IEEE（微带天线IEEE学报》上）.pdf

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Microstrip antennas Proceedings of the IEEE（微带天线IEEE学报》上）

Microstrip Antennas DAVID M. POZAR, FELLOW, IEEE Invited Paper Microstrip antennas have been one of the niost innovative topics in antenna theory and design in recent years, and are increas- ingly finding application in a wide range of modern microwave systems. This paper begins with a brief overview of the basic characteristics of microstrip antennas, and then concentrates on the most significant developments in microstrip antenna technology that have been made in the last several years. Emphasis is on new antenna configurationsfor improved electrical performance and manufacturability, and advances in the analytical modeling of microstrip antennas and arrays. I. INTRODUCTION (a) (b) Fig. 1. (a) A rectangular microstrip antenna with a microstrip line Although antenna engineering has a history of over 60 feed. (b) An eight-element linear array of microstrip patches with years, it remains, in the words of a recent review article a coplanar microstrip feed network. [l],“ . . . a vibrant field which is bursting with activity, and is likely to remain so in the foreseeable future.” Within linear or planar arrays, and easy integration with microwave this field, if the numbers of journal articles, symposia integrated circuits. papers, workshops, and short courses are any indication, Since the original config