Zobrazeno 1 - 10
of 98
pro vyhledávání: '"Raheel M. Hashmi"'
Autor:
Arslan Kiyani, Nasimuddin Nasimuddin, Raheel M. Hashmi, Affan Aziz Baba, Syed Muzahir Abbas, Karu P. Esselle, Abdelhady Mahmoud
Publikováno v:
IEEE Access, Vol 10, Pp 90244-90253 (2022)
A compact metasurface-based circularly polarized (CP) dielectric resonator antenna (DRA) is proposed with wideband characteristics. The antenna forms a very simple structure, composed of a rectangular DR, a single coaxial probe, and plus-shaped unit
Externí odkaz:
https://doaj.org/article/c3bcc5d13c96406eac1c2de05a3dbe5f
Autor:
Muhammad Ali Imran, Hassan Tariq Chattha, Asimina Kiourti, Yejun He, Raheel M. Hashmi, Muhammad Zulfiker Alam, Akram Alomainy, Qammer H. Abbasi
Publikováno v:
IEEE Access, Vol 8, Pp 207343-207351 (2020)
5G is not just the next evolution of 4G technology; it is a paradigm shift. “5G and beyond” will enable bandwidth in excess of 100s of Mb/s with a latency of less than 1 ms, in addition to providing connectivity to billions of devices. The vertic
Externí odkaz:
https://doaj.org/article/0902ad35baeb4bfb92ed2bad4078c27f
Publikováno v:
IEEE Access, Vol 8, Pp 208532-208542 (2020)
The paper presents a circularly polarized radial line slot array (CP RLSA) antenna with a nearly optimal monotonic variation of slot length with radius, in order to simultaneously reduce antenna side-lobe levels and to make the aperture phase distrib
Externí odkaz:
https://doaj.org/article/e791c06fc68c492c88a8820622b38fd5
Publikováno v:
IEEE Access, Vol 8, Pp 139422-139432 (2020)
This article presents a method to produce a highly directive circularly polarized radiation beam (gain>35 dBi) from an all-metal circularly polarized radial-line slot array (RLSA) antenna. The antenna comprises a single-layer radial TEM waveguide, fu
Externí odkaz:
https://doaj.org/article/c18489adfc6a4b71ad254760f9b8a107
Publikováno v:
IEEE Access, Vol 8, Pp 225336-225346 (2020)
Phase-gradient metasurfaces, also known as phase-shifting surfaces, are used to steer the beam of medium-to-high gain antennas. Almost all such surfaces are made of cell elements that are similar in shape and only differ in dimensional parameters to
Externí odkaz:
https://doaj.org/article/3bab06239ee748cc8803e74e18657b41
Publikováno v:
IEEE Access, Vol 7, Pp 186228-186235 (2019)
In this paper, a low-profile broadband antenna is presented for 60 GHz applications. It is demonstrated that the entire unlicensed 60 GHz frequency band can be covered using a dielectric based aperture type antenna. The antenna consists of a single-l
Externí odkaz:
https://doaj.org/article/95d2b44e3cb342dc83f2db1572af4940
Autor:
Roy B. V. B. Simorangkir, Yang Yang, Raheel M. Hashmi, Toni Bjorninen, Karu P. Esselle, Leena Ukkonen
Publikováno v:
IEEE Access, Vol 6, Pp 48102-48112 (2018)
We present our study on polydimethylsiloxane (PDMS)-embedded conductive fabric, which we propose as a simple yet effective solution to the challenging issue of poor PDMS-metal adhesion, allowing for a relatively easy realization of robust flexible an
Externí odkaz:
https://doaj.org/article/963d703037344a10a3fd82ab1dc0c78b
Autor:
Anindya Nag, Roy B. V. B. Simorangkir, Elizabeth Valentin, Toni Bjorninen, Leena Ukkonen, Raheel M. Hashmi, Subhas Chandra Mukhopadhyay
Publikováno v:
IEEE Access, Vol 6, Pp 71020-71027 (2018)
In this paper, we present a new approach to realize flexible transparent strain sensors. It combines the use of transparent conductive fabric with polydimethylsiloxane (PDMS) through a simple and straightforward layer-by-layer assembly process. The c
Externí odkaz:
https://doaj.org/article/8d9eed682ad84615ad5fbb0f2a9a37ee
Publikováno v:
IEEE Transactions on Antennas and Propagation. 70:1719-1728
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 67:2953-2957
In this brief, a compact lowpass filter (LPF) with wide stopband, very sharp roll-off response and wide tuning range is presented for microwave diode detector applications. It employs two hexagonal-shaped resonators and multiple open-end stubs as sup