Thanks to the high data rates achievable with 3G and 4G wireless communication systems and the advent of the app-based use paradigm, wireless connectivity through multiple air interfaces has become a common requirement in the RF architecture of new generation mobile communication devices. Modern wireless handset easily incorporates three or more antennas to enable cellular, Wi-Fi, and GPS connectivity, frequently over multiple bands. Dual antenna systems are frequently designed to implement diversity or spatial multiplexing schemes, as in the case of WCDMA and LTE, to increase resiliency and capacity of wireless links and even to operate multiple voice/data links simultaneously. Concurrently, ultrawideband (UWB) systems used in short range communications, remote sensing, and through-the-wall radar imaging have introduced a new paradigm in the antenna design where the mitigation of pulse distortion is of the essence, thus requiring a shift in antenna design approach and the introduction of novel radiating systems. As a consequence of these trends, the degree of complexity and difficulty in the design and implementation of wireless device antenna systems has grown dramatically, requiring ever more innovative solutions.

This special issue is intended to reflect current R&D trends and novel approaches in the analysis and synthesis of antenna systems for the new generation of mobile communication devices, applicable to the various device form factors such as smartphones, tablets, and laptop computers as well as for UWB communication systems and radars. Prospective authors are invited to submit their original research or review papers dealing with advances in mobile antenna technologies, product integration, performance optimization, as well as related measurements and simulation methods. Potential topics include, but are not limited to:

• Numerical and analytical techniques for antenna modeling and design
• Antenna performance measurement techniques
• MIMO antenna systems and channel modeling for Wi-Fi, WiMAX, and LTE
• Broad- and multibanding techniques
• UWB antenna design and analysis
• Substrates, special materials, and fabrication techniques
• Integration within the host platform
• Tunable antennas and corresponding enabling devices
• Reconfigurable antennas
• Wearable/flexible antennas
• Evaluation of the RF exposure to wireless communication devices

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/ijap/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/submit/journals/ijap/wmt/ according to the following timetable: