We describe the spectral characteristics of the radiation scattered by two-level atoms (quantum dots) driven by a strong external field, and coupled to a photonic crystal radiation reservoir. We show that in the presence of strong variations with the frequency of the photonic reservoir density of states, the atomic, Mollow, sideband components of the scattered intensity can be strongly modified...

In this paper, an integrated 2.2–5.7GHz multi-band differential LC VCO for multi-standard wireless communication systems was designed utilizing 0.35mm SiGe BiCMOS technology. The topology, which combines the switching inductors and capacitors together in the same circuit, is a novel approach for wideband VCOs. Based on the post-layout simulation results, the VCO can be tuned using a DC voltage ...

Inductance profile has an important bearing on the performance of a Switched Reluctance Motor (SRM) This paper presents the results of a frequency respolse method to estimate the inductance profde of SRMs. Stator winding is energized by a variable voltage variable Frequency supply. An approximate equivalent circuit incorporating stator resistance, winding inductance and loss component has been ...

This paper presents a compact and simple reconfigurable antenna with wide-band, dual-band, single-band operating modes. Initially, co-planar waveguide-fed triangular monopole is obtained wide operational frequency band ranging from 4.0 GHz to 7.8 GHz. Then, two additional stubs are connected the through p-i-n diodes. By electrically switching these diodes ON OFF, different bands can be attained...

This article consists on the design and the simulation of a 2. 4 GHz Integer-N Frequency Synthesizer with 1 MHz Frequency Step which can be used for exchanging data over short distances (using short-wavelength radio transmissions in the ISM band from 2400–2480 MHz) from fixed and mobile devices, creating personal area networks (PANs) with high levels of security. The effects of the sideband&apo...

This paper presents a novel design of a microstrip patch antenna with compact nature and the study of various antenna parameters to suit the applications such as WiMax operating in the frequency range of 3.3 – 3.5 GHz and in other applications like fixed satellite services, maritime mobile services etc. covering 2 4 GHz of S-band frequency spectra. It is experimental observed that by placing st...

SMIQ is a signal generator capable of digital and analog modulation for use in the development and production of digital mobile-radio receivers and components as well as for general-purpose measurements (FIG 1). Its frequency range covers all common mobile-radio frequencies and applications in the IF range. The generator comes in four models: SMIQ02, SMIQ03, SMIQ02E and SMIQ03E. The figures 02 ...

One of the most active research areas in the field of radar applications is the development of collisionavoidance systems (CAS) for automotive industry. The first prototypes of HEMT-based CAS chipsets operating at 77GHz have been recently demonstrated [1]. Such chipsets will greatly benefit from the addition of a monolithic transceiver switch, which would allow using a single antenna for both t...

Pyridostigmine bromide (PB) is a reversible cholinesterase inhibitor. The aim of this study was to determine the effect of orally administration of single dose sustained-released tablet of pyridostigmine bromide (PBSR) on the frequency domain indices of heart rate variability (HRV). Thirty-two healthy young men were participated in this study. They were divided into 2 groups; the pyridostigmine...

Purpose. To present a methodology for determining the optimal switching frequency in converters and autonomous voltage inverters, load of which is an asynchronous electric motor. The based on dependences static dynamic power losses switches inverter dependence windings induction motor higher harmonics currents, also depend frequency. Methodology. Polynomial approximation energy characteristics ...