The tunable bandpass filter can be scaled to the commercial frequencies up to 2.5GHz, offering advantages for most ISM and cellular band applications.
📌 3 Maddede Bu Makale
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Amaç & Hipotez:This article discusses the development of an electronically tunable filter capable of a wide frequency tuning range.
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Temel Bulgular & Veri:Variation of bias (0-5V) changes the center frequency of the filter within 10% while achieving a 1-dB of typical insertion loss.
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Sonuç & Katkı:The tunable bandpass filter can be scaled to the commercial frequencies up to 2.5GHz, offering advantages for most ISM and cellular band applications.
This article discusses the development of an electronically tunable filter capable of a wide frequency tuning range. Variation of bias (0-5V) changes the center frequency of the filter within 10% while achieving a 1-dB of typical insertion loss. The concept of tuning a filter’s 3-dB bandwidth with voltage is demonstrated and the effect of the bandwidth tuning elements on the tunable filter performance is discussed. The designed filter has a simple structure and the characteristics of wide tuning range of 1800MHz to 2000MHz and low insertion loss of less than -1.20 dB. The tunable bandpass filter can be scaled to the commercial frequencies up to 2.5GHz, offering advantages for most ISM and cellular band applications.
BELEN, M. A., MAHOUTI, P., PARTAL, H. P., DEMİREL, S., GÜNEŞ, F. (2015). DESIGN AND SIMULATION OF A TUNABLE BANDPASS FILTER USING VARACTOR DIODES FOR WIRELESS AND RADAR APPLICATIONS. Sigma Mühendislik ve Fen Bilimleri Dergisi, Cilt: 33 - Sayı: 1, 86–93. https://ajindex.com/articles/419054
D. M. Pozar, Microwave Engineering, 2nd ed. New York: Wiley, 1998, ch. 8
S. B. Cohn, “Parallel-coupled transmission-line-resonator filters” IEEE Trans. Microw. Theory Tech., vol. MTT-6, no. 4, pp. 223–231, Apr. 1958
J. S. Hong and M. J. Lancaster, “Development of new microstrip pseudo-interdigitalbandpass filters” IEEE Microw. Guided Wave Lett., vol. 5, no. 8, pp. 261–263, Aug. 1995
J. S. Hong and M. J. Lancaster, Microstrip Filter for RF/Microwave Application. New York: Wiley, 2001, ch. 10
S. F. R. Chang, W. L. Chen, S. C. Chang, C. K. Tu, C. L. Wei, C. H. Chien, C. H. Tsai, J. Chen, and A. Chen, “A dual-band RF transceiver for multistandard WLAN applications” IEEE Trans. Microw. Theory Tech., vol. 53, no. 3, pp. 1048–1055, Mar. 2005
J.-R. Lee, J.-H.Cho, and S.-W. Yun, “New compact bandpass filter using microstrip resonators with open stub inverter” IEEE Microw. Guided Wave Lett., vol. 10, no. 12, pp. 526–527, Dec. 2000
S. Amari, K. Hamed, Y. Antar, and A. Freundorfer, “New elliptic microstrip resonator filters” in Proc. Asia–Pacific Microw. Conf., Nov. 2001, pp. 755–758
L. Zhu and W. Menzel, “Compact microstripbandpass filter with two transmission zeros using a stub-tapped half-wavelength line resonator” IEEE Microw. Wireless Compon.Lett., vol. 13, no. 1, pp. 16–18, Jan. 2003
C.-K. Liao, P.-L.Chi, and C.-Y. Chang, “Microstrip realization of generalized Chebyshev filters with box-like coupling schemes” IEEE Trans. Microw. Theory Tech., vol. 55, no. 1, pp. 147–153, Jan. 2007
R. Li and L. Zhu, “Compact UWB Bandpass filter using stub-loaded multiple-mode resonator” IEEE Microw. Wireless Compon.Lett., vol. 17, no. 1, pp. 40–42, Jan. 2007
Q.-X. Chu and S.-T. Li, “CompactUWBbandpass filter with improved upper-stopband performance” Electron. Lett., vol. 44, no. 4, 12, pp. 742–743, Jun. 2008
X. Y. Zhang, J. X. Chen, and Q. Xue, “Dual-band bandpass filter using stub-loaded resonators” IEEE Microw.Wireless Compon.Lett., vol. 17, no. 8, pp. 583–585, Aug. 2007
X. Y. Zhang and Q. Xue, “Novel centrally loaded resonators and their applications to bandpass filter” IEEE Trans. Microw. Theory Tech., vol. 56, no. 4, pp. 913–921, Apr. 2008
P. Mondal and M. K. Mandal, “Design of dual-band bandpass filters using stub-loaded open-loop resonators” IEEE Trans. Microw. Theory Tech., vol. 56, no. 1, pp. 150–155, Jan. 2008
C. F. Chen, T. Y. Huang, and R. B. Wu, “Design of dual- and triple passband filter