Results 51 to 60 of about 1,054 (130)

Dual-Band Integrated Antennas for DVB-T Receivers

International Journal of Antennas and Propagation, 2013
An overview on compact Planar Inverted-F Antennas (PIFAs) that are suitable for monitor-equipped devices is presented. In particular, high efficiency PIFAs (without any dielectric layer) with a percentage bandwidth (%BW) greater than 59% (470–862 MHz DVB-
Andrea D'alessandro, Roberto Caso, Marcos R. Pino, Paolo Nepa   +3 more
doaj   +1 more source

Applications of N─F─Based Reagents in the Synthesis of Organochalcogen Compounds

Asian Journal of Organic Chemistry, Volume 14, Issue 12, December 2025.
Herein, we provide a comprehensive review of recent advances in synthetic strategies to access organochalcogen‐decorated compounds using N─F reagents as efficient oxidants for converting chalcogen–chalcogen bonds into electrophilic chalcogen‐based species.
Thiago Anjos, Mateus W. Rambo, Damiano Tanini, Alan Diego C. Santos, Ricardo F. Schumacher, Filipe Penteado   +5 more
wiley   +1 more source

Machine learning‐driven design of dual‐band antennas using PGGAN and enhanced feature mapping

IET Microwaves, Antennas & Propagation
This paper presents a systematic antenna design methodology that integrates machine learning, leveraging the progressive growth technique of Progressive Growing of GANs (PGGAN) to generate images of various dual‐band PIFA‐like antenna structures.
Lung‐Fai Tuen, Ching‐Lieh Li, Yu‐Jen Chi, Chien‐Ching Chiu, Po Hsiang Chen   +4 more
doaj   +1 more source

Planar Inverted-F Antenna (PIFA) Using Microfluidic Impedance Tuner

Sensors, 2018
This paper proposes a microfluidic impedance tuner that is applied to a planar inverted-F antenna (PIFA). The proposed microfluidic impedance tuner is designed while using a simple double-stub and the impedance is changed by tuning the stub length.
Minjae Lee, Sungjoon Lim
doaj   +1 more source

A Novel Ultrawideband Planar Inverted-F Antenna with Capacitive Ground Plane

International Journal of Antennas and Propagation, 2013
With the trend of the miniaturization, broadband, and integration of multisystems of wireless communication terminals, a new ultrawideband planar inverted-F antenna (PIFA) with capacitive ground plane is proposed in this paper.
Haixia Liu, Fei Wang, Yang Yang, Xiaowei Shi, Long Li   +4 more
doaj   +1 more source

A High Isolation MIMO Antenna without Decoupling Structure for LTE 700 MHz

International Journal of Antennas and Propagation, 2015
This paper presents a long-term evolution (LTE) 700 MHz band multiple-input-multiple-output (MIMO) antenna, and high isolation between the two symmetrical antenna elements is obtained without introducing extra decoupling structure.
Yanjie Wu, Yunliang Long
doaj   +1 more source

A Tunable MIMO Antenna With Dual-Port Structure for Mobile Phones

IEEE Access, 2019
In this paper, we develop a new frequency reconfigurable dual-port antenna that has two independent signal feed ports in a single antenna element for multiple-input multiple-output capable mobile handsets.
Won-Woo Lee, Beakcheol Jang
doaj   +1 more source

Analysis of Human Head Interaction in Handset Antennas Using Ground Plane Corrugation

IEEE Access
This paper presents a novel approach for designing a mobile antenna with a Low Specific Absorption Rate (SAR). First, the relationship between the electric field and the SAR value is constructed based on the Poynting Theorem studied in the near-field ...
Hawraa Moghnieh, Mohammad Rammal, Rabih Barakeh, Elias Rachid   +3 more
doaj   +1 more source

Microwave Imaging Sensor Using Low Profile Modified Stacked Type Planar Inverted F Antenna

Sensors, 2018
Microwave imaging is the technique to identify hidden objects from structures using electromagnetic waves that can be applied in medical diagnosis.
Mohammad Tariqul Islam, Md. Amanath Ullah, Touhidul Alam, Mandeep Jit Singh, Mengu Cho   +4 more
doaj   +1 more source