Novel Transformation to Design Dual-Band Filters
Ahdy, H., El-Tager, A., Ibrahim, F., Hafez, I. (2015). Novel Transformation to Design Dual-Band Filters. EKB Journal Management System, 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015), 1-10. doi: 10.21608/asat.2015.22939
Heba Ahdy; Ayman M. El-Tager; Fawzy Ibrahim; Ismail Hafez. "Novel Transformation to Design Dual-Band Filters". EKB Journal Management System, 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, 2015, 1-10. doi: 10.21608/asat.2015.22939
Ahdy, H., El-Tager, A., Ibrahim, F., Hafez, I. (2015). 'Novel Transformation to Design Dual-Band Filters', EKB Journal Management System, 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015), pp. 1-10. doi: 10.21608/asat.2015.22939
Ahdy, H., El-Tager, A., Ibrahim, F., Hafez, I. Novel Transformation to Design Dual-Band Filters. EKB Journal Management System, 2015; 16(AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015): 1-10. doi: 10.21608/asat.2015.22939

Novel Transformation to Design Dual-Band Filters

International Conference on Aerospace Sciences and Aviation Technology
Article 44, Volume 16, AEROSPACE SCIENCES & AVIATION TECHNOLOGY, ASAT - 16 – May 26 - 28, 2015, May 2015, Page 1-10  XML PDF (640.67 K)
Document Type: Original Article
DOI: 10.21608/asat.2015.22939
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Authors
Heba Ahdy1; Ayman M. El-Tager2; Fawzy Ibrahim3; Ismail Hafez4
1Arab Organization for Industrialization (AOI).
2Egyptian Armed Forces.
3Misr International University (MIU).
4Ain Shams University (Cairo Egypt).
Abstract
This paper introduces novel derived transformation equations to design dual-band filters. The design utilizes the approach adopted for dual-band bandpass filter design based on asymmetric half-wavelength resonator. The obtained optimized filter by this approach is used as a reference and the proposed transformation is applied to calculate the new filter design hardware parameters that satisfy its given specifications. Two dual-band filters are demonstrated by using this ransformation. The reference dual-band filter is designed to have: bandwidths of 96 MHz and 185 MHz at the central frequencies 2.1 GHz and 5.6 GHz for UMTS/ Wi-MAX applications, respectively. Another two dual-band filters for GPS/WiLAN and GPS/Wi-MAX applications are illustrated to verify the transformation technique. The momentum simulations for these filters show that the specifications are: bandwidths of 85 MHz and 100 MHz at the central frequencies 1.575 GHz and 5.8 GHz for the first one while bandwidths of 95 MHz and 100MHz at the central frequencies 1.5 GHz and 3.8 GHz for the second filter, respectively. All the results are obtained using circuit and momentum simulation of the Agilent Design Simulator (ADS) package.
Keywords
Dual-band Filter; Microstrip Filter; Frequency Transformation; Shunt Open stubs or Asymmetric Resonator
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