Recently, small-signal microwave performance has been reported for PNP InAlAs/InGaAs HBTs [1, 2]. While power performance of PNP AlGaAs/GaAs HBTs has been demonstrated [3], nothing has been reported on power performance of PNP HBTs in the InP material system. In this work, InAlAs/InGaAs PNP HBTs were fabricated and subsequently characterized under large signal conditions at X-band to determine ...

The effect of microwave-assisted convective air-drying on the drying kinetics and quality of mango was evaluated. Both microwave power and pretreatment time were significant factors but the effect of power was more profound. Increase in microwave power and pretreatment time had a positive effect on drying time. The nonenzymatic browning index of the fresh samples increased from 0.29 to 0.60 whi...

Asimple analytic method for transistor oscillator design has been developed. This technique defines explicit expressions for optimum values of feedback elements and load through bipolar transistor z-parameters. Such an approach is useful for practical optimization of a series feedback microwave bipolar oscillator. Microwave oscillator design in general represents a complex problem. Depending on...

The measurement of power output (PO) during cycling has led some manufacturers to develop mobile power meters. However, such devices have to provide a valid, sensitive and reproducible PO. This study aimed to determine the validity, sensitivity and reproducibility of the Stages and Garmin Vector during both laboratory and field cycling tests. The results demonstrate that the Stages and the Garm...

This paper investigates computationally-efficient methods for blind decision feedback equalization (DFE) that reduce the complexity and power requirements of blind equalization algorithms while maintaining their steady-state characteristics for quadrature amplitude modulation (QAM) signals. These include the power-of-two error (POT), selective coefficient update (SCU), and frequency-domain bloc...

background: cutaneous leishmaniasis caused by l. major is an important public health problem in endemic areas. the aim of this study was to explore the therapeutic effect of microwave and or infrared radiation in the treatment of lesion induced in balb/c mice by l. major inoculation. methods: the footpad lesion was induced in balb/c mice by inoculation of l. major promastigotes subcutaneously. ...

background: microwave thermotherapy has been gradually used in radiotherapy and it is reported that microwave radiation increases bone demineralization rate independently of temperature. furthermore, it becomes more and more widespread that the damage caused by the synergistic effect of microwave radiation and hypergravity. the experiment was designed to investigate the effect of microwave radi...

A 1.2-V fully integrated 0.35m inductively degenerated common source CMOS low-noise amplifier has been demonstrated at 2.4 GHz in this paper. A simple common source configuration can be operated at lower voltage and has lower output impedance when compared with a conventional high output impedance cascode LNA circuit topology. The input matching inductance, output matching inductance, and sourc...

This article is based on “Class-E High-Efficiency Power Amplifiers, from HF to Microwave,” Proceedings of the IEEE International Microwave Symposium, June 1998, Baltimore; and “ClassE Switching-Mode High-Efficiency Tuned RF Microwave Power Amplifier: Improved Design Equations,” Proceedings of the IEEE International Microwave Symposium, June 2000, Boston; both by Nat Sokal, © IEEE 1998, 2000.—Ed.