International wireless telegraphy : hearing before the Committee on Foreign Relations, United States Senate, Sixty-second Congress, on an International Wireless Telegraphy Convention, with service regulations annexed thereto, a supplementary agreement, and a final protocol, all signed at Berlin on November 3, 1906, by delegates of the United States and those of several other powers. February 21, 1912.

Mode of access: Internet.

Pattern Switching Compact Patch Antenna for On-body and Off-body Communications at 2.45 GHz

The ability to switch between propagating modes is important for body-centric applications such as medical body area networks where a single node may need to be able to optimise communications for either on-body sensor links or off-body links to the wider network. Therefore, we present a compact 2.45 GHz active mode-switching wearable antenna for both on-body and off-body wireless communications. The single-layer patch antenna was pattern-switched using shorting pins and had an impedance bandwidth of 253 MHz and 217 MHz for the on-body and off-body radiating modes, respectively. An efficiency of 57 % and 56.8 % was obtained for on-body and off-body mode respectively when placed in close proximity to a phantom that represents a muscle issue at 2.45 GHz.

International wireless telegraph : [hearings, Sixtieth Congress, first session.] An international wireless telegraph convention, with service regulations annexed thereto, a supplementary agreement, and a final protocol, all signed at Berlin on November 3, 1906, by delegates of the United States and those of several other powers, and hearings thereon before the Committee on Foreign Relations, United States Senate, ...

Mode of access: Internet.