Microwave High Speed Variable Transmission Devices Constructed with Coupled Transmission Line and Semiconductor Elements, and their Applications

Phase Frequency Detector Using Transmission Gates for High Speed Applications

In this paper a new phase-frequency detector is proposed using transmission gates which can detect phase difference less than 500ps. In other word, the proposed Phase-frequency Detector (PFD) can work in frequencies higher than 1.7 GHz, whereas a conventional PFD operates at frequencies less than 1.1 GHz. This new architecture is designed in TSMC 0.13um CMOS Technology. Also, the proposed PFD a...

Semiconductor Mode-Locked Laser for High-Speed OTDM Transmission

The aim of this work is to investigate semiconductor mode-locked lasers for their application as a transmitter pulse source in an optical time division multiplexing (OTDM) system with data rates up to 640 Gbit/s and with on-off keying (OOK) or differential phase shift keying (DPSK) modulation formats. Up to the present work there have not been any applications of the semiconductor mode-locked l...

Design of Continuously Variable Transmission (CVT) with Metal Pushing Belt and Variable Pulleys

Nowadays, automakers have invested in new technologies in order to improve the efficiency of their products. Giant automakers have taken an important step toward achieving this objective by designing continuously variable transmission systems (CVT) to continuously adapt the power of the engine with the external load according to the optimum efficiency curve of e...

Modeling and Sensitivity Analysis of Full Toroidal Continuously Variable Transmission

New CMT-SCTP with increased speed of data transmission

Communication protocols issues are one of the effective factors in communicated networks performance. One of challenging problem in CMT-SCTP which sends data by multipath concurrently is Receive Buffer Blocking. This problem has important role in data transmission speed in computer networks. In this paper, we propose a control method based on fuzzy logic so that can solve Receive Buffer Blockin...