Design and development of a multiband loop antenna for cellular mobile handsets

Inherently non‐resonant multi‐band mobile terminal antenna

“…In comparison to the recently published state‐of‐the‐art antennas having comparable size and performance, the CCE antenna performs well. It has identical dimensions with the prototype presented in [1], but the CCE antenna has larger bandwidth. It is smaller in size than the antennas in [2] (4.4 cm 3 ) and [3] (3.25 cm 3 ), covering the same or wider frequency bands.…”

“…1 for details. The off‐ground approach is widely used in contemporary handset antennas in order to obtain enough impedance bandwidth and efficiency at low frequencies [1–3,5,6].…”

“…This can be realised, e.g., with the help of slots, parasitic elements, or different antenna excitation methods. Many interesting recently published self-resonant single antenna designs are loop antennas [1][2][3]. As the number of frequency bands increases, the complexity of a self-resonant antenna geometry increases accordingly.…”

“…1 for details. The off-ground approach is widely used in contemporary handset antennas in order to obtain enough impedance bandwidth and efficiency at low frequencies [1][2][3]5,6]. 5 24 2 16 6 3 50 5 10 The CCE is fed through a matching circuit consisting of lumped matching reactances.…”

On-Body Channel Measurement Using Wireless Sensors

“…Furthermore, the antenna will behave differently when measured in isolation and when integrated with a system, as required in any application (a fact that has influenced mobile phone antenna design for some time; see, for example, [11][12][13]), due to additional surface currents induced on the system structure. This will, in turn, affect the propagation channel data, due to the difficulty in decoupling the two aspects.…”