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Full-Text Articles in Electronic Devices and Semiconductor Manufacturing

Multi-Hole Waveguide Directional Couplers, Mahmoud Moghavvemi, Hossein Ameri Mahabadi, Farhang Alijani Nov 2012

Multi-Hole Waveguide Directional Couplers, Mahmoud Moghavvemi, Hossein Ameri Mahabadi, Farhang Alijani

Hossein Ameri Mahabadi

1. Introduction The directional couplers are inherently assumed as four-port devices, which consisted of two transmission lines that are electromagnetically coupled to each other. The first port is named as input, and the second one as output or transmitted, the third one as sampling or coupled and the fourth one as isolated or terminated. By using a special design the input power is divided between output and coupled port in a certain ratio named coupling factor. The required value for coupling factor P1/P3 defines the range of applications for directional couplers. Based on the application, coupling factor could be any …


Itex2012 Gold Medal, Prof.Dr. Mahmoud Magha Vvemi, Hossein Ameri Mahabadi, Aliyar Attaran May 2012

Itex2012 Gold Medal, Prof.Dr. Mahmoud Magha Vvemi, Hossein Ameri Mahabadi, Aliyar Attaran

Hossein Ameri Mahabadi

This is to certify that PROF.DR. MAHMOUD MAGHA VVEMI, HOSSEIN AMERI, ALIYAR ATTARAN has been awarded the ITEX GOLD MEDAL for the invention SIGNAL INTEGRITY ENHANCEMENT IN C-BAND RADIO LINK SYSTEM CONSIDERING JITTER AND PHASE PRECISION at the 23rd International Invention, Innovation & Technology Exhibition ITEX2012 Kuala Lumpur, Malaysia 17th_ 19th May 2012


Planning Of Low-Cost 77-Ghz Radar Transceivers For Automotive Applications, Hossein Ameri Mahabadi, A. Attaran, M. Moghavvemi Apr 2012

Planning Of Low-Cost 77-Ghz Radar Transceivers For Automotive Applications, Hossein Ameri Mahabadi, A. Attaran, M. Moghavvemi

Hossein Ameri Mahabadi

The key to prevent driving accidents by automotive radar systems at high speed is to have optimum and accurate estimation of position representation and fast visualization of the environment.