Low frequency plasmons in thin-wire structures

Abstract

This letter presents a wide-locking range CMOS divideby-3 injection-locked frequency dividers (ILFD) using single-ended injection signal. The fabricated 0.18 lm CMOS 43 ILFD uses crosscoupled switching transistors, single-injection MOSFET, and a dualresonance RLC resonator. The consumed power of the 43 ILFD core is 7.97 mW at the DC drain-source voltage 0.76 V. At an external injected signal power P inj 5 0 dBm, the measured locking range is 2.97 GHz (25.25%) from 10.28 to 13.25 GHz and the operation range is 5.17 GHz (48.5%) from 8.08 to 13.25 GHz.

Metamaterial made of paired planar conductors: Particle resonances, phenomena and properties

“…Since the 50's and 60's the wire medium shown in Fig. 1(a) has been described for an incident electric field parallel to the wires as an artificial dielectric [18][19][20] with an isotropic effective plasma-like relative permittivity ε eff r = 1 − f 2 P /f 2 , where f is the signal frequency, f p is the plasma frequency which depends on the wire diameter and interspacing, see [21][22][23][24] (such medium is assumed to be lossless, which is a reasonable approximation at microwave frequencies). Spatial dispersion should be additionally taken into account when the waves travel at a slant angle to the wire axes [25,26].…”

THz frequency studies of metallic structures

“…There have also been various other theoretical studies of both the photonic bandstructure for infinite systems 6,7 and transmission calculations in the case of finite structures 8,9 . Experimental results have been reported both in the original work of Pendry et al 2 and also, more recently, by Pimenov and Loidl 10 who investigated arrays of copper and steel wires using broadband terahertz spectroscopy.…”

A Comparison Between Different Schemes of Microwave Cancer Hyperthermia Treatment by Means of Left-Handed Metamaterial Lenses

“…The metallic thin wire arrays exhibit a permittivity ε r < 0 below the electric plasma frequency (ω pe ) in the microwave range [12]. On the other hand, an array of split-ring resonators exhibits a permeability μ r < 0 below the magnetic plasma frequency (ω pm ) [13].…”