On Miniaturizing On-Chip Microstrip Inductors Using Embedded Radiating Dipoles

[摘要] As RF mixed-signal and patch-antenna-equipped SOC devices are becoming the dominant products worldwide, concerns over the large real-estate consumption by the spiral inductors (including those for microstrip antennas and impedance-matching inductances), as well as their generallyQ-low (quality factor) performance, are now being discussed more than ever. Liao et al. have recently addressed theQ-low issue via using location-selective proton beam bombardment, wherebyQ-improvements of100%–300%were evidenced. That success, nevertheless, is at times tarnished by some undesirable features, that is, the explosive rises of inductances near certain frequencies, which practically cut short theQ-enhancement and were identified to be due to resonant interactions between the inductor-propagating EM wave and the proton-caused defect dipoles. In this paper, however, the authors attempt to turn this resonance-caused undesirability to favor by proposing a new way to greatly shrink down the needed inductor size through dipoles engineering.

[学科分类] 电子、光学、磁材料