Design of multi-standard single/tri/quint-wideband asymmetric stepped-impedance resonator filters with adjustable TZs

View/ Open
IETPaper.pdf (1.283Mb)
Download
Publication date
2019-08Author
Al-Yasir, Yasir I.A.Tu, Yuxiang X.
Bakr, M.S.
Ojaroudi Parchin, Naser
Asharaa, Abdalfettah S.
Mshwat, Widad F.A.G.A.
Abd-Alhameed, Raed

Noras, James M.
Keyword
Poles and zerosBand-pass filters
Microwave filters
Microstrip filters
Resonator filters
UHF filters
Rights
This paper is a postprint of a paper submitted to and accepted for publication in IET Microwaves, Antennas & Propagation and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at the IET Digital Library.Peer-Reviewed
YesOpen Access status
openAccessAccepted for publication
2019-05-01
Metadata
Show full item recordAbstract
This study presents an original asymmetric stepped-impedance resonator filter combined with meander coupled-line structures and enabling the realisation of finite transmission zeros (TZs) and the implementation of multi-band bandpass filters. The meander coupled sections (MCSs) tune the TZs and resonant frequencies: with higher-order spurious frequencies cancelled by the TZs, a single wideband with wide stopband from 1.18 to 1.84 GHz is possible. Furthermore, by positioning the finite TZs between the high-order spurious frequencies and adjusting the coupling strength between resonators, a quint-wideband filter can be realised, with centre frequencies of 1.19, 4.29, 5.43, 6.97, 9.9 GHz and fractional bandwidths of 31.9, 15.4, 15.8, 4.3, 39.2%, respectively. More importantly, two filters with single/quad-wideband performance can be realised by tuning the parameters of the MCS, and therefore they can be designed separately by using only one original structure. The triple-wideband filter is realised with the help of the asymmetric parallel uncoupled microstrip section. These filter structures enjoy the advantage of single/multi-band versatility, structure reusability and simplicity. The good in-band and out-of-band performance, low loss and simple structure of the proposed single/tri/quint-wideband filters make them very promising for applications in future multi-standard wireless communication.Version
Accepted manuscriptCitation
Al-Yasir YIA, Tu YX, Bakr MS et al (2019) Design of multi-standard single/tri/quint-wideband asymmetric stepped-impedance resonator filters with adjustable TZs. IET Microwaves, Antennas & Propagation. 13(10): 1637-1645.Link to Version of Record
https://doi.org/10.1049/iet-map.2018.5863Type
Articleae974a485f413a2113503eed53cd6c53
https://doi.org/10.1049/iet-map.2018.5863
Scopus Count
Collections
Related items
Showing items related by title, author, creator and subject.
-
FIR implementation on FPGA: investigate the FIR order on SDA and PDA algorithmsMigdadi, Hassan S.O.; Abd-Alhameed, Raed; Obeidat, Huthaifa A.N.; Noras, James M.; Qaralleh, E.A.A.; Ngala, Mohammad J. (2015)Finite impulse response (FIR) digital filters are extensively used due to their key role in various digital signal processing (DSP) applications. Several attempts have been made to develop hardware realization of FIR filters characterized by implementation complexity, precision and high speed. Field Programmable Gate Array is a reconfigurable realization of FIR filters. Field-programmable gate arrays (FPGAs) are on the verge of revolutionizing digital signal processing. Many front-end digital signal processing (DSP) algorithms, such as FFTs, FIR or IIR filters, are now most often realized by FPGAs. Modern FPGA families provide DSP arithmetic support with fast-carry chains that are used to implement multiply-accumulates (MACs) at high speed, with low overhead and low costs. In this paper, distributed arithmetic (DA) realization of FIR filter as serial and parallel are discussed in terms of hardware cost and resource utilization.
-
A novel multi-standard dual-wide band polygon SLSIR filterTu, Yuxiang X.; Ali, Ammar H.; Elmegri, Fauzi; Abousitta, M.; Abd-Alhameed, Raed; Hussaini, Abubakar S.; Elfergani, Issa T.; Rodriguez, Jonathan; Atiah, A.S. (2015)A novel multi-standard dual-wide band filter with a compact size of only 8.8 mm by 16.8mm is designed and developed for transceiver devices. The proposed filter has a fundamental bandwidth of 1.6GHz with fractional bandwidth (FBW) of 29.7% centered at the 5.4GHz band, and second bandwidth of 300.0MHz with FBW of 3.6% centered at the 8.15GHz band. The basic dual-wide bandwidth is attributed to the interaction of the novel modified polygon pair and upper stub loaded stepped impedance resonator. Moreover, the added down stub loaded stepped impedance resonator (SLSIR) further enhances the pass band performance by widening the bandwidth and optimizing reflection coefficient performance considerably. To validate the proposed ideas, the multi-standard filter is designed and simulated by Ansoft HFSS software. The simulated results agree well with the theory predictions. The featured broad bandwidths over two frequency bands and the miniaturized size of the proposed filter make it very promising for applications in future multi-standard wireless communication.
-
A New Approach for Designing Orthogonal Wavelets for Multicarrier ApplicationsAnoh, Kelvin O.O.; Noras, James M.; Abd-Alhameed, Raed; Jones, Steven M.R.; Voudouris, Konstantinos N. (2014-07)The Daubechies, coiflet and symlet wavelets, with properties of orthogonal wavelets are suitable for multicarrier transmission over band-limited channels. It has been shown that similar wavelets can be constructed by Lagrange approximation interpolation. In this work and using established wavelet design algorithms, it is shown that ideal filters can be approximated to construct new orthogonal wavelets. These new wavelets, in terms of BER behave slightly better than the wavelets mentioned above, and much better than biorthogonal wavelets, in multipath channels with additive white Gaussian noise (AWGN). It is shown that the construction, which uses a simple simultaneous solution to obtain the wavelet filters from the ideal filters based on established wavelet design algorithms, is simple and can easily be reproduced.