Dual-band Filtenna Array for WLAN Applications

This paper presents the design and results of a dual-band antenna array integrated with bandpass filters for WLAN applications. The array is fed with a single 50 Ω port and consists of two radiating elements; thereby having a 1x2 array structure. The two bands of the antenna array correspond to the two WLAN bands of 2.4 GHz and 5.8 GHz. A standalone array has first been designed. Other than the two fundamental resonant frequencies, the standalone array exhibits spurious harmonics at various other frequencies. For the suppression of these harmonics, the array has been integrated with two bandpass filters, centered at 2.4 GHz and 5.8 GHz. The resulting filtenna array was simulated, fabricated and measured. Obtained simulation and measurement results agree well with each other and have been presented to validate the accuracy of the proposed structure. Measured return loss of the structure shows dual-bands at 2.4 GHz and 5.8 GHz of more than 30 dB each and also a successful suppression of the spurious harmonics of the antenna array has been achieved. Radiation patterns have also been simulated and measured and both results shown. The gain and efficiency have also been presented; with the values being 6.7 dBi and 70% for the 2.4 GHz band and 7.4 dBi and 81% for the 5.8 GHz band respectively.

Reframing reporting of childhood sexual exploitation: three journalists reflect

This article explores three national and local journalists’ experiences of reporting on child sexual exploitation by so-called “Asian street grooming gangs” in UK towns and cities, with a particular emphasis on journalists framing journalists. In response to coverage of a series of cases, journalists have been accused by academics, policymakers and rival media organizations of fixating on perpetrators’ ethnicity and creating distorted, racist media frames. Few, if any, studies have garnered practitioners’ perspectives on how framing occurs, so we interview three prominent journalists who have covered such cases in order to deepen our understanding of the processes and causative factors behind particular editorial angles. While offering only a snapshot view, our findings reveal these individual journalists to be caught at the nexus of a range of factors that impact upon their work, both internally and externally driven.