All Outputs (77)

A Varactor-Based Very Compact Tunable Filter with Wide Tuning Range for 4G and Sub-6 GHz 5G Communications (2020)
Journal Article
Al-Yasir, Y. I. A., Ojaroudi Parchin, N., Tu, Y., Abdulkhaleq, A. M., Elfergani, I. T. E., Rodriguez, J., & Abd-Alhameed, R. A. (2020). A Varactor-Based Very Compact Tunable Filter with Wide Tuning Range for 4G and Sub-6 GHz 5G Communications. Sensors, 20

A very compact microstrip reconfigurable filter for fourth-generation (4G) and sub-6 GHz fifth-generation (5G) systems using a new hybrid co-simulation method is presented in this manuscript. The basic microstrip design uses three coupled line resona... Read More about A Varactor-Based Very Compact Tunable Filter with Wide Tuning Range for 4G and Sub-6 GHz 5G Communications.

A Survey on Reconfigurable Microstrip Filter–Antenna Integration: Recent Developments and Challenges (2020)
Journal Article
Tu, Y., Al-Yasir, Y. I. A., Ojaroudi Parchin, N., Abdulkhaleq, A. M., & Abd-Alhameed, R. A. (2020). A Survey on Reconfigurable Microstrip Filter–Antenna Integration: Recent Developments and Challenges. Electronics, 9(8), Article 1249. https://doi.org/10

Reconfigurable and tunable radio frequency (RF) and microwave (MW) components have become exciting topics for many researchers and design engineers in recent years. Reconfigurable microstrip filter–antenna combinations have been studied in the litera... Read More about A Survey on Reconfigurable Microstrip Filter–Antenna Integration: Recent Developments and Challenges.

A New and Compact Wide-Band Microstrip Filter-Antenna Design for 2.4 GHz ISM Band and 4G Applications (2020)
Journal Article
Al-Yasir, Y. I. A., Alkhafaji, M. K., A. Alhamadani, H., Ojaroudi Parchin, N., Elfergani, I., Saleh, A. L., …Abd-Alhameed, R. A. (2020). A New and Compact Wide-Band Microstrip Filter-Antenna Design for 2.4 GHz ISM Band and 4G Applications. Electronics,

A new and compact four-pole wide-band planar filter-antenna design is proposed in this article. The effect of the dielectric material type on the characteristics of the design is also investigated and presented. The filter-antenna structure is formed... Read More about A New and Compact Wide-Band Microstrip Filter-Antenna Design for 2.4 GHz ISM Band and 4G Applications.

Load‐modulation technique without using quarter‐wavelength transmission line (2020)
Journal Article
Abdulkhaleq, A. M., Yahya, M. A., Parchin, N. O., Al‐Yasir, Y., Sajedin, M., Elfergani, I., …Rodriguez, J. (2020). Load‐modulation technique without using quarter‐wavelength transmission line. IET microwaves, antennas & propagation, 14(11), 1209-1

A proposed method for achieving active load-modulation technique without using a quarter-wavelength transmission line is discussed and evaluated. The theoretical analysis shows that the active load-modulation can be achieved without using a quarter-w... Read More about Load‐modulation technique without using quarter‐wavelength transmission line.

Use of multiple mobile sinks in wireless sensor networks for large‐scale areas (2020)
Journal Article
Al‐Behadili, H. A., AlWane, S. K., Al‐Yasir, Y. I., Parchin, N. O., Olley, P., & Abd‐Alhameed, R. A. (2020). Use of multiple mobile sinks in wireless sensor networks for large‐scale areas. IET Wireless Sensor Systems, 10(4), 175-180. https://doi.o

Sensing coverage and network connectivity are two of the most fundamental issues to ensure that there are effective environmental sensing and robust data communication in a wireless sensor network (WSN) application. Random positioning of nodes in a W... Read More about Use of multiple mobile sinks in wireless sensor networks for large‐scale areas.

Design of Multi-Mode Antenna Array for Use in Next-Generation Mobile Handsets (2020)
Journal Article
Ojaroudi Parchin, N., Jahanbakhsh Basherlou, H., & Abd-Alhameed, R. A. (2020). Design of Multi-Mode Antenna Array for Use in Next-Generation Mobile Handsets. Sensors, 20(9), Article 2447. https://doi.org/10.3390/s20092447

In this study, a new design of a tri-band multiple-input–multiple-output (MIMO) antenna array is proposed for fifth-generation (5G) cellular systems. Its structure is composed of eight identical planar-inverted F antenna (PIFA) elements placed at dif... Read More about Design of Multi-Mode Antenna Array for Use in Next-Generation Mobile Handsets.

Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets (2020)
Journal Article
Ojaroudi Parchin, N., Jahanbakhsh Basherlou, H., I. A. Al-Yasir, Y., M. Abdulkhaleq, A., & A. Abd-Alhameed, R. (2020). Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets. Sensors, 20(8), Article 2371. https://doi.org/10.3390/s20082371

A new ultra-wideband (UWB) multiple-input/multiple-output (MIMO) antenna system is proposed for future smartphones. The structure of the design comprises four identical pairs of compact microstrip-fed slot antennas with polarization diversity functio... Read More about Ultra-Wideband Diversity MIMO Antenna System for Future Mobile Handsets.

A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges (2020)
Journal Article
Al-Yasir, Y. I. A., Ojaroudi Parchin, N., Abdulkhaleq, A. M., Bakr, M. S., & Abd-Alhameed, R. A. (2020). A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges. Sensors, 20(8), Article 2356. https://doi.org/10.3390/s200

Differentially driven devices represent a highly promising research field for radio frequency (RF), microwave (MW), and millimeter-wave (mmWave) designers and engineers. Designs employing differential signals are essential elements in low-noise fourt... Read More about A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges.

Design of a Wide-Band Microstrip Filtering Antenna with Modified Shaped Slots and SIR Structure (2020)
Journal Article
Al-Yasir, Y. I. A., A. Alhamadani, H., Kadhim, A. S., Ojaroudi Parchin, N., Saleh, A. L., Elfergani, I. T. E., …Abd-Alhameed, R. A. (2020). Design of a Wide-Band Microstrip Filtering Antenna with Modified Shaped Slots and SIR Structure. Inventions, 5(1)

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 Impedan... Read More about Design of a Wide-Band Microstrip Filtering Antenna with Modified Shaped Slots and SIR Structure.

Reconfigurable Antennas: Switching Techniques—A Survey (2020)
Journal Article
Ojaroudi Parchin, N., Jahanbakhsh Basherlou, H., Al-Yasir, Y. I. A., M. Abdulkhaleq, A., & A. Abd-Alhameed, R. (2020). Reconfigurable Antennas: Switching Techniques—A Survey. Electronics, 9(2), Article 336. https://doi.org/10.3390/electronics9020336

Due to the fast development of wireless communication technology, reconfigurable antennas with multimode and cognitive radio operation in modern wireless applications with a high-data rate have drawn very close attention from researchers. Reconfigura... Read More about Reconfigurable Antennas: Switching Techniques—A Survey.

A New CPW-Fed Diversity Antenna for MIMO 5G Smartphones (2020)
Journal Article
Ojaroudi Parchin, N., Jahanbakhsh Basherlou, H., Al-Yasir, Y. I. A., M. Abdulkhaleq, A., Patwary, M., & A. Abd-Alhameed, R. (2020). A New CPW-Fed Diversity Antenna for MIMO 5G Smartphones. Electronics, 9(2), Article 261. https://doi.org/10.3390/electronic

In this study, a new coplanar waveguide (CPW)-fed diversity antenna design is introduced for multiple-input–multiple-output (MIMO) smartphone applications. The diversity antenna is composed of a double-fed CPW-fed antenna with a pair of modified T-ri... Read More about A New CPW-Fed Diversity Antenna for MIMO 5G Smartphones.

Orthogonally dual‐polarised MIMO antenna array with pattern diversity for use in 5G smartphones (2020)
Journal Article
Ojaroudi Parchin, N., Al‐Yasir, Y. I., Jahanbakhsh Basherlou, H., Abd‐Alhameed, R. A., & Noras, J. M. (2020). Orthogonally dual‐polarised MIMO antenna array with pattern diversity for use in 5G smartphones. IET microwaves, antennas & propagation, 14

A new multiple-input/multiple-output (MIMO) antenna design is introduced for future smartphones. The proposed design contains four pairs of double-fed circular-ring resonators located at different edges of the smartphone printed circuit board (PCB) w... Read More about Orthogonally dual‐polarised MIMO antenna array with pattern diversity for use in 5G smartphones.

Noise Cancellation for HIPERLAN/2 with Open Loop Transmit Diversity Technique (2019)
Journal Article
Yahya, M. A., Alsaif, O. I., Saleh, I. A., Abdulkhaleq, A. M., Ojaroudi Parchin, N., Al-Yasir, Y. I. A., & Abd-Alhameed, R. A. (2019). Noise Cancellation for HIPERLAN/2 with Open Loop Transmit Diversity Technique. Inventions, 4(3), Article 46. https://doi

A new proposed method is presented, where multiple antennas have been applied into HIPERLAN/2 system in addition to employing space-time diversity technique, especially the Alamouti technique. The suggested approach is used to cancel or reduce the ef... Read More about Noise Cancellation for HIPERLAN/2 with Open Loop Transmit Diversity Technique.

Recent Developments of Dual-Band Doherty Power Amplifiers for Upcoming Mobile Communications Systems (2019)
Journal Article
Abdulkhaleq, A. M., Yahya, M. A., McEwan, N., Rayit, A., Abd-Alhameed, R. A., Ojaroudi Parchin, N., …Noras, J. (2019). Recent Developments of Dual-Band Doherty Power Amplifiers for Upcoming Mobile Communications Systems. Electronics, 8(6), Article 638.

Power amplifiers in modern and future communications should be able to handle different modulation standards at different frequency bands, and in addition, to be compatible with the previous generations. This paper reviews the recent design technique... Read More about Recent Developments of Dual-Band Doherty Power Amplifiers for Upcoming Mobile Communications Systems.

Design of multi‐standard single/tri/quint‐wideband asymmetric stepped‐impedance resonator filters with adjustable TZs (2019)
Journal Article
Al‐Yasir, Y. I., Tu, Y., Bakr, M. S., Parchin, N. O., Asharaa, A. S., Mshwat, W. A., …Noras, J. M. (2019). Design of multi‐standard single/tri/quint‐wideband asymmetric stepped‐impedance resonator filters with adjustable TZs. IET microwaves, ant

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 mea... Read More about Design of multi‐standard single/tri/quint‐wideband asymmetric stepped‐impedance resonator filters with adjustable TZs.

Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems (2019)
Journal Article
Ojaroudi Parchin, N., Jahanbakhsh Basherlou, H., Alibakhshikenari, M., Ojaroudi Parchin, Y., Al-Yasir, Y. I. A., Abd-Alhameed, R. A., & Limiti, E. (2019). Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems. Electronics,

A design of mobile-phone antenna array with diamond-ring slot elements is proposed for fifth generation (5G) massive multiple-input/multiple-output (MIMO) systems. The configuration of the design consists of four double-fed diamond-ring slot antenna... Read More about Mobile-Phone Antenna Array with Diamond-Ring Slot Elements for 5G Massive MIMO Systems.

Eight-Element Dual-Polarized MIMO Slot Antenna System for 5G Smartphone Applications (2019)
Journal Article
Parchin, N. O., Al-Yasir, Y. I. A., Ali, A. H., Elfergani, I., Noras, J. M., Rodriguez, J., & Abd-Alhameed, R. A. (2019). Eight-Element Dual-Polarized MIMO Slot Antenna System for 5G Smartphone Applications. IEEE Access, 7, 15612-15622. https://doi.org/10

In this paper, we propose an eight-port/four-resonator slot antenna array with a dual-polarized function for multiple-input-multiple-output (MIMO) 5G mobile terminals. The design is composed of four dual-polarized square-ring slot radiators fed by pa... Read More about Eight-Element Dual-Polarized MIMO Slot Antenna System for 5G Smartphone Applications.