Miniature Antenna Using Printed Coupled Lines Emulating Degenerate Band Edge Crystals

作者：Mumcu Gokhan^*; Sertel Kubilay; Volakis John L

来源：IEEE Transactions on Antennas and Propagation, 2009, 57(6): 1618-1624.

DOI：10.1109/TAP.2009.2019874

• Anisotropic media
• coupled microstrip lines
• degenerate band edge (DBE) crystals
• magnetic photonic (MPC) crystals
• metamaterials
• miniature antennas
• printed antennas

A miniature printed antenna design that exploits higher-order dispersion behavior in degenerate band edge (DBE) crystals is proposed. First, the unit cell of a DBE crystal is emulated using a simple combination of uncoupled and coupled microstrip (MS) line sections printed on a low loss dielectric substrate. Subsequently, a resonant antenna is formed by cascading two such MS-DBE unit cells in a circularly periodic fashion. The first part of the paper is devoted to the antenna/array design and characterization using a low contrast dielectric substrate (Rogers Duroid, epsilon(r) = 2.2). Next, fabrication and design verification using a high dielectric constant substrate (alumina: Al2O3, epsilon(r) = 9.6) is given. The manufactured antenna was measured to have a broadside gain of 4.5 dB at 1.48 GHz with 3.0% bandwidth. For this gain and bandwidth, we demonstrate that the proposed MS-DBE antenna has a lambda(0)/9 x lambda(0)/9 footprint and is among the smallest in the literature.

• 出版日期2009-6