Topic
Front-to-back ratio
About: Front-to-back ratio is a research topic. Over the lifetime, 292 publications have been published within this topic receiving 3314 citations.
Papers published on a yearly basis
Papers
More filters
[...]
TL;DR: A window locking arrangement includes a keeper having a locking tab and a lock having a cam member which is rotatably movable into contact with the locking tab.
Abstract: A window locking arrangement includes a keeper having a locking tab and a lock having a cam member which is rotatably movable into contact with the locking tab. The inner surface of the cam member is flat at its locked location of contact with the keeper tab.
2 citations
TL;DR: In this article, self-phasing can be achieved in a quadrifilar helix antenna by displacing one of the bifilars along the axis of the helix, yielding a circularly polarized cardioid shaped pattern.
Abstract: Self-phasing can be achieved in a quadrifilar helix antenna (QHA) by displacing one of the bifilars along the axis of the helix, yielding a circularly polarized cardioid shaped pattern. Impedance bandwidth of 10% (2105-2345 MHz) has been achieved with Front to back ratio greater than 10 dB.
2 citations
23 Dec 2013
TL;DR: In this article, a volumetric miniaturized AMC block is designed to simulate an infinite periodic structure, and a block of nine aligned layers is then simulated to validate the performance of the AMC block.
Abstract: This paper is dedicated to the study of volumetric MSRR-based AMC structure. The characteristics of a single MSRR unit cell are investigated; and a volumetric miniaturized AMC block is then designed. In order to validate the approach used to simulate an infinite periodic structure, a block of nine aligned layers is then simulated. The next step is to add a printed dipole antenna as an application to validate the performance of the AMC block. The results are very excellent and promising if compared with the simple dipole antenna as an enhancement of 5 dB is achieved considering the directivity. The front to back ratio is found to be about 20 dB.
2 citations
01 Dec 2018
TL;DR: The developed antenna finds its application in Radio Frequency Identification (RFID) tags, Wireless LAN, 5G, energy harvesting circuits and any wireless sensor nodes, where differential inputs/outputs are required.
Abstract: A structurally simple, H-Shaped, differential antenna is presented. The antenna is operating at 5.2GHz, with a −10dB bandwidth of 4 percent, and has a differential impedance of 100Ω. The size of the intrinsic antenna is 2.07cm × 1.4cm. The proposed antenna has a gain of 5.7dBi and a directivity of 7dB at the center frequency. It has a front to back ratio of 15.7dB across the operating band. The proposed antenna is designed, simulated and verified experimentally. As the paper presents ways for scaling at different frequencies, the developed antenna finds its application in Radio Frequency Identification (RFID) tags, Wireless LAN, 5G, energy harvesting circuits and any wireless sensor nodes, where differential inputs/outputs are required.
2 citations
01 Jan 2015
TL;DR: In this paper, a novel wide bandwidth end-fire antenna with log-periodic directors is proposed, which includes a balun which is formed using a pair of microstrip-to-slotline transitions.
Abstract: This paper presents the design and implementation of a novel wide bandwidth endfire antenna with log-periodic directors. The feeding structure of the proposed antenna includes a balun which is formed using a pair of microstrip-to-slotline transitions. The proposed antenna has three resonant frequencies in the operating frequency band. Both simulation and measurement results show that the operating frequency band of the antenna for S11 18 dB and cross polarization level below -28 dB. The dimension of the proposed antenna is 26 mm × 27 mm. Good return loss and radiation pattern characteristics are obtained and measured results are presented to validate the usefulness of the proposed antenna structure for wide bandwidth endfire applications.
2 citations