بحث
الآن تُعرض المواد 1 -- 6 من 6
Low-profile frequency reconfigurable antenna for heterogeneous wireless systems
(MDPI AG., 2019)
A low-profile (0.21λg× 0.35λg× 0.02λg ) and a simply-structured frequency-switchable antenna with eight frequency choices is presented in this paper. The radiating structure (monopole) is printed on a 1.6-mm thicker, ...
Frequency and pattern reconfigurable antenna for emerging wireless communication systems
(MDPI AG., 2019)
A printed and minimal size antenna having the functionality of frequency shifting as well as pattern reconfigurability is presented in this work. The antenna proposed in this work consists of three switches. Switch 1 is a ...
Dielectric resonator antenna with reconfigurable polarization states
(John Wiley and Sons Inc., 2020)
This study presents a simple and low-profile cylindrical dielectric resonator antenna (CDRA) for the fifth-generation (5G) band (3.5 GHz) with switchable polarization. The antenna can operate with linear or circular ...
Design of Wideband Circular-Slot Antenna for Harvesting RF Energy
(Hindawi Limited, 2022)
The design of a wideband circular-slot antenna for RF signal harvesting is reported in this work. The proposed design frequency range accommodates the leading contributors to the available RF signals accessible by the RFEH ...
A multiband SSr diode RF rectifier with an improved frequency ratio for biomedical wireless applications
(Nature Research, 2023-12)
This paper described a four-band implantable RF rectifier with simplified circuit complexity. Each RF-rectifier cell is sequentially matched to the four operational frequencies to accomplish the proposed design. The proposed ...
SIW-based frequency-adjustable antenna for IoT-based duplex wireless devices
(Elsevier GmbH, 2024)
This paper proposes a compact and frequency-adjustable/reconfigurable dielectric (DR)-loaded eighth-mode substrate integrated waveguide (EMSIW) antenna for duplex wireless communications. The miniaturization of the resonators ...