Recent Progress in the Design of 4G/5G Reconfigurable Filters

Al‐Yasir, Yasir I. A.; Parchin, Naser Ojaroudi; Abd‐Alhameed, Raed A.; Abdulkhaleq, Ahmed M.; Noras, James M.

doi:10.3390/electronics8010114

Cited by 74 publications

(50 citation statements)

References 75 publications

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“…On the other hand, as seen from Figure C, most of the currents are around the defected rectangular structures and the two coupled transmission lines with maximum current densities 60 A/m at 2.1, 5.2, 7.6, and 9.3 GHz. It is significant that the proposed designs can be easily developed to handle and permit reconfigurability and can be easily integrated with antenna designs, to create the so‐called “filtenna” …”

Section: The Modified Skew‐symmetrical Asymmetric Sir Filtermentioning

confidence: 99%

New multi‐standard dual‐wideband and quad‐wideband asymmetric step impedance resonator filters with wide stop band restriction

Al‐Yasir

Parchin

et al. 2019

Int J RF Microw Comput Aided Eng

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New multi‐standard wide band filters with compact sizes are designed for wireless communication devices. The proposed structures realize dual‐wideband and quad‐wideband characteristics by using a new skew‐symmetrical coupled pair of asymmetric stepped impedance resonators, combined with other structures. The first and second dual‐wideband filters realize fractional bandwidths (FBW) of 43.2%/31.9% at the central frequencies (CF) of 1.875/1.63 GHz, and second bandwidths of 580 MHz/1.75 GHz at CF of 5.52/4.46 GHz, respectively. The proposed quad‐band filter realizes its first/second/third/fourth pass bands at CF 2.13/5.25/7.685/9.31 GHz with FBW of 46.0%/11.4%/4.6% and 5.4%, respectively. The wide pass bands are attributed to the mutual coupling of the modified ASIR resonators and their bandwidths are controllable by tuning relative parameters while the wide stop band performance is optimized by the novel interdigital cross coupled line structure and parallel uncoupled microstrip line structure. Moreover, the quad band is generated by introducing the novel defected rectangle structure. These multi‐standard filters are simulated, fabricated and measured, and measured results agree well with both simulated results and theory predictions. The good in‐band and out‐of‐band performances, the miniaturized sizes and simple structures of the proposed filters make them very promising for applications in future multi‐standard wireless communication.

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Section: The Modified Skew‐symmetrical Asymmetric Sir Filtermentioning

confidence: 99%

New multi‐standard dual‐wideband and quad‐wideband asymmetric step impedance resonator filters with wide stop band restriction

Al‐Yasir

Parchin

et al. 2019

Int J RF Microw Comput Aided Eng

Self Cite

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“…Traditional filter designed using waveguides, SIW and microstrip line occupy more space on the circuit boards thereby demanding use of compact and high-performance tunable filters. To select a suitable reconfiguration technique RF engineers should take into consideration of following parameters: operating frequency, physical size, performance and power handling [15]. Reconfiguration in filter can be achieved by:…”

Section: Reconfigurable Bandpass Filter Designmentioning

confidence: 99%

Design Methods for Reconfigurable Filters: A Review

Gagare

Reney

2019

RJET

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The new design methods of microwave filter has proved its significance for use in wireless communication systems. Modern wireless communication systems require microwave filters to have stringent specifications such as compact size, robust, conformal, light weight and more importantly cost effective while maintaining its electrical characteristics. Micro-strip filter design and reconfigurable filters present a better prospectus in this regards as it meets the specifications of modern wireless communication applications. Reconfigurable filters can provide control over parameters such as frequency, bandwidth and selectivity while reducing the need of number of switches sandwiched between electrical components. Different methods have provided a new dimension for designing microwave filters .In this article, we present a review on design methods for reconfigurable band-pass filters for next generation wireless technologies such as 4G, 5G and IOT.

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“…Increasing demand for compact transceiver applications continues to affect the field of microwave and radio frequency communications [1][2][3][4]. Some of the most important modules in such systems are the microstrip antennas and filters .…”

Section: Introductionmentioning

confidence: 99%

Design of a Wide-Band Microstrip Filtering Antenna with Modified Shaped Slots and SIR Structure

et al. 2020

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This paper presents a new compact microstrip filtering antenna with modified shaped slots to improve the impedance bandwidth. The proposed microstrip filtering antenna consists of three parts: the monopole radiating patch antenna; the Stepped Impedance Resonator (SIR) filter; and the feeding microstrip line. The designed structure is achieved on one-sided glass epoxy FR-4 substrate with dielectric constant εr = 4.4 and thickness h = 1.6 mm. The design procedure of the proposed filtering antenna starts from the second-order Chebyshev low pass filter (LPF) prototype. The achieved results show an excellent performance of S11-parameter with broadside antenna gain on +z-direction. Having two transmission zeros at 5.4 GHz and 7.7 GHz, good skirt selectivity and a wide-band impedance bandwidth of about 1.66 GHz makes the designed filtering antenna suitable for high-speed data communications. Both the simulation results generated by using the Computer Simulation Technology (CST) software package and the measurement achieved by using a vector network analyzer (HP 8510C) and the anechoic chamber show good agreement.

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Recent Progress in the Design of 4G/5G Reconfigurable Filters

Cited by 74 publications

References 75 publications

New multi‐standard dual‐wideband and quad‐wideband asymmetric step impedance resonator filters with wide stop band restriction

New multi‐standard dual‐wideband and quad‐wideband asymmetric step impedance resonator filters with wide stop band restriction

Design Methods for Reconfigurable Filters: A Review

Design of a Wide-Band Microstrip Filtering Antenna with Modified Shaped Slots and SIR Structure

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