Design of ultra-compact ISM band implantable patch antenna for bio-medical applications

In this paper, an ultra-compact implantable antenna for biomedical applications is proposed. The proposed implanted meandered compact patch antenna is implanted inside the body at a depth of 2 mm. The proposed antenna was designed with Roger RO3003 (ɛr = 3) as substrate with an overall size of dimensions 5 × 5 × 0.26 mm3. The radiating element is a square patch antenna with different size rectangular slots and coaxial feeding. The proposed implantable antenna resonates at 2.45 GHz (from 2.26 to 2.72 GHz) frequency with a bandwidth of 460 MHz and a gain of −22.6 dB. The specific absorption rate has been considered for health care considerations, and the result is within the limits of the federal communication commission. The measured and simulated scattering parameters are compared, and good agreements are achieved. The proposed antenna is simulated and investigated for biomedical applications suitability.

A Flexible Broadband CPW-Fed Circularly Polarized Biomedical Implantable Antenna With Enhanced Axial Ratio Bandwidth

Implantable antennas have a vital role in biomedical telemetry applications. Therefore, a compact low-profile circularly polarized biomedical implantable antenna operational in industrial, scientific, and medical (ISM) band at 2.45 GHz is reported. The presented antenna is fed by a modified co-planar waveguide (CPW) technique to keep the size of the antenna compact. The radiating monopole consists of a slotted rectangular patch with one slot at an angle of 45 degree and truncated small patch on the left end of the CPW ground plane to make the antenna circularly polarized at the required frequency band. A flexible Roger Duroid RT5880 substrate (εr = 2.2, tanδ = 0.0009) with the standard thickness of 0.254 mm is used to achieve bending abilities. The complete volume of the designed antenna is 21 mm × 13.5 mm × 0.254 mm (0.25 × 0.16 × 0.003 ). The antenna covers the bandwidth from 2.35-2.55 GHz (200 MHz) in free space while from 1.63 GHz to 2.8 GHz (1.17 GHz) inside skin tissue. As the designed antenna is operational in skin tissue with larger bandwidth, the bending analysis along the (x & y)-axis is also analyzed through the simulation. A good agreement between the simulation and measurements of the bended antenna is observed. The measured -10dB impedance bandwidth and the 3dB axial ratio (AR) bandwidth inside skin-mimicking gel are 47.7% and 53.8%, respectively at 2.45 GHz frequency band. Finally, the specific absorption rate (SAR) values are also analyzed through simulations, and it is 0.78 W/kg inside skin over 1 g of mass tissue. The proposed SAR values are less than the limit of the federal communication commission (FCC). This antenna is miniaturized and an ideal applicant for the biomedical implantable applications.

A survey of violence and vulgarity in children television programs: a content analysis, and assessment of perceptions of parents and children (ViCTiM study)

Objectives: To quantify the depiction of violence and vulgarity in television programmes for children, and to assess the perception and practices of parents and children about television programmes meant for children. Methods: We conducted this mixed-methods cross-sectional study in Karachi, Pakistan in the months of August-September 2018, after approval from the ethics review board of Dow University of Health Sciences, Karachi. First, a content analysis of over 102 hours of various television programmes meant for children was performed in the light of the guidelines set out by the World Health Organisation, the United States Federal Communication Commission and the Pakistan Electronic Media Regulatory Authority. Seven trained researchers sampled the children prime time throughout a week, including the weekends, using a structured tally sheet. Subsequently, interviews were conducted with dyad of parent-children from the employees’ list of a public-sector university. A questionnaire was also administered to assess the practices and perceptions of the parents-children dyad about the programmes. Data was analysed using SPSS 24. Results: Of the 173 subjects, 84(48.6%) were parents and 89(51.4%) were children. The mean age of the children was 89 children 9.8±3.7 years. Content analysis comprised 6130 minutes, of which 5442(88.8%) had depictions of violence and vulgarity. Depiction of violence and vulgarity was prevalent on television channels that were watched the most, but there was no significant difference in this regard (p=0.238). Of the parents, 68(81%) expressed concern over the effect of screen time and content on the mental health of their children.

Novel Low-Cost Integrated Multiband Antenna Design Customized for Smartwatch Applications with SAR Evaluation

This paper presents a novel low-cost integrated multiband antenna design customized for smartwatch applications and wearable devices. The design consists in using a broadband planar patch antenna with circular microstrip lines and a miniaturized feeding-point with a structure of 30 × 30 × 1.6 mm3, and it is easy to deploy inside the smartwatch and cost-effective for the wearable device industry. The parametric study and final dimensions of the design and the measured results of the reflection and radiation pattern are discussed. The antenna with maximum gain up to 6.6 dBi and S11 up to −22 dB exhibits excellent performance for all the frequencies required in wearable systems such as 1.9 GHz, 2.3 GHz, 2.4 GHz, 2.6 GHz, 5.2 GHz, and 5.8 GHz. We drew a comparison between similar research and this work in terms of antenna performance. Furthermore, we investigate the specific absorption rate (SAR) performance of the antenna for the smartwatch application, using both human hand wrist multilayer and SAM head mouth models. The SAR results in different positions for all the frequencies are compared to the Federal Communication Commission (FCC) standards.

Miniaturized Microstrip Patch Antenna for Microwave Imaging Application

This paper present the brief view to design of a microstrip rectangular patch antenna. Microstrip patch antennas are used because of configuration such as low profile, conformal, light weight, and easy fabrication. The linear polarization and circularly polarization of microstrip patch antennas have attracted more attention recently. These antennas are significant due to their ability to improve the benefits of microwave imaging application. The Federal Communication Commission (FCC) has approved the frequency limit for narrowband and wideband antenna. One of the advantage of the narrow band technology is the design of feasible compact conformal antennas. Therefore a compact miniaturized microstrip rectangular patch antenna has been proposed to design for microwave imaging application. The miniaturization of microstrip patch antenna has been done to obtain the better narrow bandwidth, return loss and Voltage Standing Wave Ratio (VSWR). Ultra Wide Band (UWB) is achieved by using certain techniques which is used for expansion of bandwidth. The rectangular patch antenna with a 50Ωmicrostrip feed is fabricated on the FR4 substrate.

The Effect of Different Dielectric Constant on Same Microstrip Patch Antenna Design

This paper demonstrate the effect of textile material (Jeans) on U.W.B. we all familiar with the information that U.W.B is in between 3.1 to 10.6 GHz, That is assigned by the society of F.C.C (Federal Communication Commission) in 2002.The convoluted design present in this paper, It has designing frequency of 2.4 GHz & we have used IE3D software for simulation. The bandwidth, gain, directivity & efficiency of textile antenna are 109%, 6.69dBi, 6.7dBi, 99.6% respectively and bandwidth, gain, directivity, efficiency of reference antenna are 103%, 7.21dBi, 7.28dBi, 99.5% respectively. Here we are deploying line feed method technique for simulation

Television Censorship

This chapter addresses the censorship issues faced by Hitchcock while producing his television series, Alfred Hitchcock Presents. It traces the history of broadcast censorship from the introduction of the Federal Communication Commission in 1934 through the development of the National Association of Broadcasters’ Code of Practices in 1951. The Code resembled the Motion Picture Production Code and was accompanied by a Seal of Good Practice, which was displayed on the closing credits of most US television programs from 1952 through the early 1980s. In practice, the sponsors of television programs had more control over programming conduct than the NAB Code. Because TV sponsors were attuned to any negative reaction, and television reached a much wider audience than movies, television content in the 1950s and 1960s was much more susceptible to protests from pressure groups than the movies. Television producers faced more censors than movie producers and were even more timid about confronting them. The Red Scare of the 1950s produced blacklists of television performers that ruined as many lives as the movie blacklists did. The NAB Code became hopelessly outdated and was suspended in 1983, supplanted by a rating system similar to that developed by the MPAA in 1996.

The Media Sounds the Alarm

Following the medical identification of tampon-related toxic shock syndrome (TSS), there was an urgent need to alert the hundreds of thousands of women using tampons and superabsorbent tampons that the products were potentially dangerous and deadly. Disseminating a message of risk challenged status quo journalistic practices, and chapter 3 examines the media coverage of a health crisis centered upon women’s reproductive health and menstrual management practices. The press had to figure out a way to talk about TSS in overly simplistic terms, in an era when the Federal Communication Commission only recently allowed feminine hygiene sprays, and then sanitary napkins and pads, to be advertised on television. Journalistic reports helped to disseminate messages and warnings about TSS and tampons, and also announce the recall of Rely—the tampon with the highest incidence of TSS—produced by Procter & Gamble. This contributed to a sense that the problem had been solved, but other superabsorbent tampons remained on the market and TSS was not eliminated.

Novel UWB Microstrip Antenna Structures with Defected Ground Structure

<p>This paper presents the design of new compact printed antennas for Ultra Wide Band applications, fed with a microstrip-line. The proposed designs consist of a patch antenna with defected ground, which are fed by 50Ω microstrip transmission line. The frequency range is 3.1-10.6 GHz which is the Federal Communication Commission (FCC) band of UWB. The proposed antennas are easy for integration with microwave circuits. They are validated into simulation by using two electromagnetic solvers CST-MW and Ansoft HFSS. The simulated input impedance bandwidth ranging 3GHz to more than 14 GHz is obtained with return loss less -10dB, and exhibits good UWB characteristics. The measured parameters are good agreement with the simulation. Therefore these antennas offer excellent performance for UWB system.</p>

5G internet could dilute net neutrality in key regions

Subject Net neutrality. Significance The US Federal Communication Commission (FCC)'s plan to roll back its net neutrality policy will enter into force on June 11 after multiple delays. The move faces opposition within Congress and across the country. Elsewhere in the world, net neutrality appears to be holding up, but industry pressure is mounting. Impacts Telecoms firms will seek ways to favour entertainment content produced by subsidiary companies. Autonomous vehicles are most likely to require prioritisation of internet traffic and new pricing policies. Several regions, such as Europe and India, will face tough civil society action against any dilution of net neutrality.