scholarly journals HIGH Q-FACTOR NARROW-BAND BANDPASS FILTER USING CYLINDRICAL DIELECTRIC RESONATORS FOR X-BAND APPLICATIONS

2018 ◽  
Vol 77 ◽  
pp. 65-71 ◽  
Author(s):  
Reza Karimzadeh-Jazi ◽  
Mohammad Amin Honarvar ◽  
Farzad Khajeh-Khalili
Keyword(s):  
Bandpass Filter ◽  
Narrow Band ◽  
Dielectric Resonators ◽  
Q Factor ◽  
High Q ◽  
X Band

Dielectric-loaded L-band filters for high-power space applications

2021 ◽  
pp. 1-11
Author(s):  
Paolo Vallerotonda ◽  
Fabrizio Cacciamani ◽  
Luca Pelliccia ◽  
Alessandro Cazzorla ◽  
Davide Tiradossi ◽  
...  
Keyword(s):  
High Power ◽  
Dielectric Resonators ◽  
Q Factor ◽  
Rf Power ◽  
Space Applications ◽  
High Q ◽  
Critical Issues ◽  
L Band ◽  
Multipactor Discharge ◽  
Filter Response

Abstract The design and first experimental results of Tx and Rx L-band bandpass filters for a high-power satellite diplexer are presented in this paper. Designed in the framework of an ESA ARTES AT project, the filters are based on TM010 mode dielectric resonators. These resonators allow for better results in terms of volume occupation with respect to other dielectric resonators still maintaining high Q-factor values (>2000). Volume saving above 30% is achieved with respect to standard coaxial filters. The filter geometries and materials have been chosen in order to improve the power-handling and to cope with related critical issues for space applications (i.e. avoid any multipactor discharge in the operating RF power range and low-PIM response). Measurements of Tx filter show good correlation with the design in terms of central frequency, BW, and unloaded Q-factor (almost 3000). Measurements of Rx filter show a worse correlation with the design in terms of filter response shape. This is ascribed to size tolerances of one of the filter resonators. Multiple analyses are ongoing to remove this degradation in the final engineering model.

scholarly journals X-Band Microstrip Bandpass Filter Design using Square Loop Resonator and Defected Ground Structure

2020 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
E. Edwar ◽  
M.R. Yusron ◽  
Dharu Arseno
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Radar System ◽  
Center Frequency ◽  
Q Factor ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Telecommunication System ◽  
X Band

Filter is an important part in telecommunication system including in radar system. To get the better performance in selecting the signal, a ftlter must have a good Q-Factor. In this paper, an investigation of a ftlter design for synthetic radar has been successfully done. This ftlter has been designed to work at x-band using square loop resonator (SLR). A Defected Ground Structure (DGS) has been implemented to this work to increase the Q-factor of the ftlter. The result of measurement getting that the center frequency at 9.51 GHz with the bandwidth 610 MHz and PCB size of this ftlter is 22 mm x 16 mm.

28 GHz band bandpass filter using high Q dielectric resonators

2002 ◽  
Author(s):  
T. Nishikawa ◽  
H. Tanaka ◽  
K. Utsumi ◽  
Y. Ishikawa ◽  
K. Wakino
Keyword(s):  
Bandpass Filter ◽  
Dielectric Resonators ◽  
High Q

Very High Q-Factor Bandpass Filter Using Additive Manufacturing

2021 ◽  
Author(s):  
Enrique Lopez-Oliver ◽  
Cristiano Tomassoni ◽  
Giuseppe Addamo ◽  
Flaviana Calignano ◽  
Mauro Lumia ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Bandpass Filter ◽  
Q Factor ◽  
High Q ◽  
Very High

scholarly journals Ultra-Narrow-Band Filter Based on High Q Factor in Metallic Nanoslit Arrays

Sensors ◽  
2020 ◽  
Vol 20 (18) ◽  
pp. 5205
Author(s):  
Ling Guo ◽  
Mengran Guo ◽  
Hongyan Yang ◽  
Jun Ma ◽  
Shouhong Chen
Keyword(s):  
Narrow Band ◽  
High Spectral Resolution ◽  
Q Factor ◽  
High Q ◽  
Transmission Modes ◽  
Band Filter ◽  
Nanophotonic Device ◽  
Narrow Band Filter ◽  
Potential Applications ◽  
Nanoslit Arrays

Here we propose a novel high Q ultra-narrow-band filter in the optical regime. Multiple high Q resonances are achieved in ultra-thin metallic nanoslit arrays on stacked low index–high index dielectric (LID–HID) substrate. Based on the cooperative effect of suppressed modes and transmission modes, the high spectral resolution of transmission peaks is obtained. The number and Q factor of transmission peaks can be freely manipulated by a simple combination of the stacked LID–HID. It is demonstrated that the linewidths of the transmission peaks can be reduced down to the extreme limit of 1 nm and the Q factor is up to 700 by optimizing the structure parameter of the three-layer LID–HID. The results provide a theoretical basis to design a multi-band nanophotonic device with a high Q factor and have potential applications in the next generation of high-resolution plasmonic biosensing and filtering.

Design of Dual Band Meta-Material Resonator Sensor for Material Characterization

2021 ◽  
Vol 36 (4) ◽  
pp. 473-478
Author(s):  
Sucitra Harry ◽  
Zahriladha Zakaria ◽  
Maizatul Said ◽  
Rammah Alahnomi ◽  
M. Misran
Keyword(s):  
Resonance Frequency ◽  
Material Characterization ◽  
Empirical Equation ◽  
Narrow Band ◽  
High Sensitivity ◽  
Dual Band ◽  
Network Analyzer ◽  
Q Factor ◽  
High Q ◽  
Sensing Applications

This paper describes the design and implementation of the dual band metamaterial resonator for sensing applications by employing perturbation theory in which the dielectric properties of resonator affect Q-factor and resonance frequency. The designed sensor operates at two resonance frequency 3.20 GHz and 4.18 GHz in the range of 1 GHz to 5.5 GHz for testing solid materials. The Computer Simulation Technology (CST) software is used to design and model this sensor and it was analyzed by using vector network analyzer (VNA) for testing measurement. This study uses empirical equation from the tested materials with well-known permittivity to estimate the permittivity of other materials with unknown permittivity. The proposed sensor has achieved a narrow band with high Q-factor value of 642 and 521 at the operating frequencies of 3.16 GHz and 4.18 GHz respectively. These findings are compared with findings of previous study and the proposed sensor has achieved a high sensitivity and accuracy of 80% compare to others. This is proof that this senor could be used to characterize materials and sensing applications.

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