Search Results - "Ali Kheirdoost"

A systematic approach towards realization of transmission zeros in TE01δ mode dielectric resonator filters with all iris couplings by Golzar, Majid Hami, Kheirdoost, Ali, Haghparast, Maysam, Ahmadi, Behzad

“…This paper presents a novel method using a coupling matrix to realize dielectric resonator filters with Transmission Zeros (TZs). This method eliminates the…”
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A practical de‐embedding technique based on the network theory for the filters in a 2‐channel multiplexer by Mirnaziry, Sayyed Reza, Kheirdoost, Ali, Haghparast, Maysam, Ahmadi, Ali Akbar

“…A novel approach to de‐embed the frequency response of filters connected to a 2‐channel multiplexer without the need for unplugging is proposed. The technique…”
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Compact, Tunable and Narrowband Waveguide Filters Using TM Dual-Mode Cavities for Satellite Communication Applications by Ahmadreza Eskandari, Ali Kheirdoost, Hadi Safdarkhani

“…A compact, tunable and narrowband filter using dual TM mode is presented in Ku-band as a channelizing filter in IMUX of satellite transponders. To shrunken the…”
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Bandwidth and Isolation Improvement of Highly Coupled Printed Array Antenna Using Multiple Shorting Posts by Zaker, Reza, Kheirdoost, Ali

“…A novel broadband matching and decoupling network (MDN) for symmetric two-element array of microstrip patch antennas is proposed. As a distributed multiple…”
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Bidirectional Gain Enhancement of Folded Dipole Antenna Using Midstrips Array by Heidari, Ali, Zaker, Reza, Kheirdoost, Ali

“…A novel low-profile method to improve the bidirectional gain of a dual-element folded dipole antenna (DFDA) is presented. The proposed technique employs…”
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Mathematical Formulation and Experimental Evaluation of Efficient 8-Way Microwave Radial Power Combiner for High Power Applications by Behzad Ahmadi, Ali Kheirdoost

“…An 8 port narrowband Radial Power Combiner (RPC) with excellent combining efficiency is presented. A novel useful criteria for optimal design of the RPC is…”
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Improvement of Passband Flatness for a Compact, Narrowband, and Highly Selective TM Dual-Mode Filter by Eskandari, Ahmad Reza, Kheirdoost, Ali, Haghparast, Maysam

“…This article presents a compact, narrowband and highly selective filter with flattened passband response using TM dual-mode cavities. Indispensable passband…”
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Simultaneous flattening of amplitude and group delay responses in narrowband bandpass filters using a novel systematic design method by Eskandari, Ahmad Reza, Kheirdoost, Ali

“…In this article, a novel systematic method for compensation of the simultaneous amplitude and group delay (GD) flatness in the narrowband bandpass filters is…”
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A High-Resolution Microwave Displacement Sensor Based on Interferometry in Groove Gap Waveguide Technology by Hosseinzadeh, Mohammad, Ghalibafan, Javad, Rezaee, Morteza, Kheirdoost, Ali

“…This paper presents a highly sensitive microwave groove gap waveguide displacement sensor based on the interferometry technique. By using the interferometric…”
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Antenna-independent analytical design of a decoupled monopole array antenna with broadband harmonic suppression by Hosseinkhani, Shadi, Zaker, Reza, Kheirdoost, Ali

“…•Design a coupler-based isolation network for any desired antenna-to-antenna distance using two phase regulators.•Design of a coupled structure as a new…”
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A systematic approach towards realization of transmission zeros in TE 01δ mode dielectric resonator filters with all iris couplings by Golzar, Majid Hami, Kheirdoost, Ali, Haghparast, Maysam, Ahmadi, Behzad

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Scientometric Analysis of Published Scientific Productions in the Field of Satellite Constellations by Hossein Eftekhari, Pedram Hajipour, Ali Kheirdoost, Hassan Yeganeh

“…Satellite constellations consist of similar satellites distributed in a specific orbital pattern to accomplish a joint mission. They are commonly used for…”
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Applied Cavity Perturbation Used for Frequency Identification of Channel Ports in Manifold-Coupled Multiplexers by Mirnaziry, Sayyed Reza, Kheirdoost, Ali, Haghparast, Maysam, Ahmadi, Ali Akbar

“…We investigate a practical technique for deembedding the channel filter S-parameters of manifold-coupled multiplexers (MUXs), without detaching filters from…”
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Modeling and Jitter Improvement of SRD-Based Ultra-Wideband Pulse Generator by Kheirdoost, Ali, Moradi, Gholamreza, Elkholy, Eessam, Abdipour, Abdolali, Fathy, Aly E.

“…Step recovery diode (SRD)-based ultra-wide band (UWB) pulse generators (PGs) suffer from jitter caused by AM-to-PM conversion, SRD shot noise, and clock…”
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Compact and Narrow-Band Waveguide Filters Using TM Dual-Mode Cavities for Input Multiplexer in Communication Satellites by Eskandari, Ahmadreza, Kheirdoost, Ali

“…This paper presents a compact and narrow-band filter using TM dual-mode cavities, in Ku-band to be used as a channel filter in IMUX of a satellite transponder…”
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A Low-Profile Interdigital Diplexer for LEO Satellites Applications by Fallahzadeh, Mojtaba, Ahmadi, Behzad, Kheirdoost, Ali

“…A low-profile diplexer is proposed for satellite telemetry, tracking and command (TT&C) applications in S-band frequency within 2.025-2.110/2.200-2.290 GHz…”
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An Analytical Approach in Analysis of Local Oscillator Near-the-Carrier AM Noise Suppression in Microwave Balanced Mixers by Kheirdoost, A., Banai, A., Farzaneh, F.

“…In this paper, a new formulation based on conversion matrix method is proposed to analyze ldquonear-the-carrier local ocillator (LO) noiserdquo down conversion…”
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Digital correlation receiver for location accuracy improvement in pulsed ultra wide-band localization system by Kheirdoost, Ali, Moradi, Gholamreza, Elkholy, Essam, Fathy, Aly E.

“…Equivalent time sampling causes noise in reconstructed pulse stream due to the transmitter or receiver jitter or path variations. When this pulse stream is…”
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GaN Widening Possibilties for PAs : Wide-band GaN Power Amplifiers Utilize the Technology's Special Properties by Ghavidel, Ali, Tamjid, Farshid, Fathy, Aly, Kheirdoost, Ali

“…Applications for space technology, test equipment, electronic warfare systems, and digital radio have made wide-band power amplifiers (WBPAs) the subject of…”
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