scispace - formally typeset
Open Access

Antenna Theory And Design

Jennifer Urner
Reads0
Chats0
About: 
The article was published on 2016-01-01 and is currently open access. It has received 733 citations till now. The article focuses on the topics: Coaxial antenna & Antenna efficiency.

read more

Content maybe subject to copyright    Report

Citations
More filters
Journal ArticleDOI

Smart metasurface with self-adaptively reprogrammable functions

Qian Ma, +5 more
- 31 Oct 2019 - 
TL;DR: A smart metasurface that has self-adaptively reprogrammable functionalities without human participation is put forth, capable of sensing ambient environments by integrating an additional sensor(s) and can adaptively adjust its EM operational functionality through an unmanned sensing feedback system.
Proceedings ArticleDOI

Minding the Billions: Ultra-wideband Localization for Deployed RFID Tags

Yunfei Ma, +2 more
TL;DR: This paper presents RFind, a new technology that brings the benefits of ultra-wideband localization to the billions of RFIDs in today's world and can emulate over 220MHz of bandwidth on tags designed with a communication bandwidth of only tens to hundreds of kHz, while remaining compliant with FCC regulations.
Journal ArticleDOI

Review: Security in wireless ad-hoc networks - A survey

R. Di Pietro, +3 more
- 01 Sep 2014 - 
TL;DR: This paper surveys emerging and established wireless ad-hoc technologies and highlights their security/privacy features and deficiencies, and identifies open research issues and technology challenges for each surveyed technology.
Journal ArticleDOI

Breathfinding: A Wireless Network That Monitors and Locates Breathing in a Home

Neal Patwari, +4 more
- 01 Feb 2014 - 
TL;DR: Using RSS measurements on the links between commercial wireless devices to locate where a breathing person is located and to estimate their breathing rate, in a home, while the person is sitting, lying down, standing, or sleeping is explored.
Journal ArticleDOI

Personal Mobile Radars with Millimeter-Wave Massive Arrays for Indoor Mapping

Francesco Guidi, +2 more
- 01 Jun 2016 - 
TL;DR: Numerical results show that the idea herein investigated is feasible, and that a significant mapping performance is attainable even employing coarse antenna arrays provided that the number of antenna elements is sufficiently high.
References
More filters
Journal ArticleDOI

Fast Phased Array Calibration by Power-Only Measurements Twice for Each Antenna Element

Guolong He, +2 more
- 17 Apr 2019 - 
TL;DR: In this paper, a power-only measurement method for phased array antenna calibration is proposed, where only one phase shift and two power measurements for each array element are required to determine the element complex electric field distortion, one by shifting the element's phase of and the other by turning the element under test off.
Journal ArticleDOI

Thinning of Concentric Circular Antenna Arrays Using Improved Binary Invasive Weed Optimization Algorithm

Huaning Wu, +2 more
- 05 Mar 2015 - 
TL;DR: In this paper, an improved binary IWO (IBIWO) was proposed for pattern synthesis of thinned circular array. But, for discrete problems, it does not work well.
Journal ArticleDOI

Radar wideband digital beamforming based on time delay and phase compensation

Wei Fu, +1 more
- 18 Jan 2018 - 
TL;DR: In this study, the receiving beam patterns of wideband linear frequency modulation (LFM) signals were constructed by applying analogue stretch processing via mixing with delayed reference signals at the subarray level, and the proposed digital beamformer was implemented with reduced arithmetic complexity.
Journal ArticleDOI

Extended Monopole antenna Array with individual Shield (EMAS) coil: An improved monopole antenna design for brain imaging at 7 tesla MRI.

Myung Kyun Woo, +7 more
- 01 Jun 2016 - 
TL;DR: A new Extended Monopole antenna Array with individual Shields (EMAS) coil that improves the B1 field coverage and uniformity along the z‐direction is proposed.
Journal ArticleDOI

Pattern reconfigurable patch array for 2.4 GHz WLAN systems

Mohammad Hossein Nemati, +2 more
- 01 Oct 2014 - 
TL;DR: In this paper, a pattern reconfigurable simple two patch array antenna has been designed and implemented to operate at a fixed frequency of 2.4 GHz for beam scanning purpose, which operates at three different modes in which the radiation pattern steers 0 degrees, +/- 30 degrees with respect to the antenna broadside.