A compact series-fed, omnidirectional printed dipole array for millimeter-wave (mm-wave) bands n257, n259, and n261 is proposed. series feed technique with microstrip to grounded-co-planar waveguide (CPW) transition was used the antenna. The prototype fabricated measured range from 27.25 28.5 GHz. peak gain 10.3 dBi a maximum azimuthal ripple of 4.4 dB.

the present study was designed to develop a simple, validated liquid chromatographic method for the analysis of azithromycin in bulk and pharmaceutical dosage forms using ultraviolet detector. the best stationary phase was determined as c18 column, 5 µm, 250 mm × 4.6 mm. mobile phase was optimized to obtain a fast and selective separation of the drug. flow rate was 1.5 ml/min, wavelength was se...

This paper presents the analysis, design and implementation of a millimeter-wave W-band power detector. Fabricated in a 0.18-μm SiGe BiCMOS technology, the detector circuit exhibits a responsivity of 91 kV/W, a noise equivalent power of 0.5 pW/Hz, and a noise figure of 29 dB. The power dissipation of the detector is 75 μW. Reasonable agreement between simulations and measurements is obtained. T...

BACKGROUND Detection of characteristic waves, such as QRS complex, P wave and T wave, is one of the essential tasks in the cardiovascular arrhythmia recognition from Electrocardiogram (ECG). METHODS A multiscale morphological derivative (MMD) transform-based singularity detector, is developed for the detection of fiducial points in ECG signal, where these points are related to the characteris...

The 7GHz unlicensed band around 60GHz provides the possibility of gigabit-per-second wireless communications. In addition to satisfying speed-intensive applications, such high data rates can also reduce the energy dissipated per bit because the power consumption of RF transceivers has historically increased sublinearly with the data rate. Moreover, the millimeter wavelength permits the integrat...

The present study was designed to develop a simple, validated liquid chromatographic method for the analysis of azithromycin in bulk and pharmaceutical dosage forms using ultraviolet detector. The best stationary phase was determined as C18 column, 5 µm, 250 mm × 4.6 mm. Mobile phase was optimized to obtain a fast and selective separation of the drug. Flow rate was 1.5 mL/min, Wavelength was se...

The present study was designed to develop a simple, validated liquid chromatographic method for the analysis of azithromycin in bulk and pharmaceutical dosage forms using ultraviolet detector. The best stationary phase was determined as C18 column, 5 µm, 250 mm × 4.6 mm. Mobile phase was optimized to obtain a fast and selective separation of the drug. Flow rate was 1.5 mL/min, Wavelength was se...