Analysis and Design of Microstrip Patch antenna for a digital communication system For Narrow Band (DCS)/2.4-GHz and 5.5 GHz WLAN-Band Triple Band frequencies application is presented. The two resonant modes of the proposed antenna are associated with various arms of the monopoles, in which a rectangular resonator contributes for the 5.5 GHz WLAN resonant frequency and two various arms are resp...

The paper present a novel multi-band compact antenna designed on the theory of fractal geometry. The antenna is fabricated on a FR4 substrate. The performance of the proposed antenna design is analyzed and the results are compared with the simulations using IE-3D tool. The relevant antenna performance parameters of the proposed design viz. resonant bands, return loss, bandwidth and gain are rep...

Abstract: The Greenberger-Horne-Zeilinger (GHZ) effect provides an example of quantum correlations that cannot be explained by classical local hidden variables. This paper reports on the experimental realization of GHZ correlations using nuclear magnetic resonance (NMR). The NMR experiment differs from the originally proposed GHZ experiment in several ways: it is performed on mixed states rathe...

In this paper, we proposed a stretchable radio frequency (RF) sensor to detect strain direction and level. The stretchable sensor is composed of two complementary split ring resonators (CSRR) with microfluidic channels. In order to achieve stretchability, liquid metal (eutectic gallium-indium, EGaIn) and Ecoflex substrate are used. Microfluidic channels are built by Ecoflex elastomer and microf...

We explore the performance boundaries of sub1 GHz Wireless Local Area Networks (WLANs) and summarize the limitations of our proposed narrow-band WLAN system that uses carrier frequencies at 920 MHz with 1 MHz channel bandwidth. While there are several evaluation reports on WLAN testbeds available, no report is available that discusses the boundaries of narrow-band multiple-input multiple-output...

Abstract—A novel compact printed antenna for dual band applications is presented. The antenna consists of two monopole elements and operates within the ISM 2.4 GHz and 5.2/5.8GHz frequency bands. The proposed antenna provides a bandwidth of 403 MHz (2.184 GHz–2.587GHz) in the lower frequency band and 4004 MHz (3.880 GHz–7.884 GHz) in the upper frequency band, respectively. Thus, it can cover mu...

Abstract—In this paper, we compare the radio propagation channels characteristics between 28 and 140 GHz bands based on the wideband (several GHz) and directional channel sounding in a shopping mall environment. The measurements and data processing are conducted in such a way to meet requirements for a fair comparison of largeand smallscale channel parameters between the two bands. Our results ...

A multi-purpose dual Multiple-Input-Multiple-Output (MIMO) antenna system for 5G mobile systems is presented in this paper. The proposed consists of two sets MIMO antennas on a single board. 8-port antenna, placed the board, working over 3.5 GHz (3.4 GHz-3.6 GHz) band with dimensions 150 mm ×70 mm. 4-port system, chassis, operating 5.2 WLAN/5.5 WiMAX/5.8 GHz/6 WiFi 20 × 7 prototype designed and...

We report the first detection of an extragalactic millimeter wavelength H 2 O maser at 183 GHz towards NGC 3079 using the Submillimeter Array (SMA), and a tentative submillimeter wave detection of the 439 GHz maser towards the same source using the James Clerk Maxwell Telescope (JCMT). These H 2 O transitions – 2 – are known to exhibit maser emission in star-forming regions and evolved stars. N...

This paper describes 3-GHz and 7-GHz tunableinductance LC-tank voltage-controlled oscillators (VCOs) implemented in 0.18-μm CMOS technology. Unlike the traditional tuning method by a varactor, a tunable inductor is employed in the VCO by using a transformer to compensate for the energy loss. The VCO facilitates the tuning frequency and low noise of the output signals, together with a variable i...