公开(公告)号：US20110298688A1

公开(公告)日：2011-12-08

申请号：US12963489

申请日：2010-12-08

Applicant: Shahrzad JALALI MAZLOUMAN ,  Alireza MAHANFAR ,  Carlo MENON ,  Rodney G. VAUGHAN

Inventor： Shahrzad JALALI MAZLOUMAN ,  Alireza MAHANFAR ,  Carlo MENON ,  Rodney G. VAUGHAN

IPC: H01Q1/36

CPC classification number: H01Q1/362 ,  H01Q9/14

Abstract: Novel reconfigurable antennas are provided which may be used to accommodate the requirements for wideband multi-standard handheld communication devices. It is shown that using a shape memory alloy spring actuator, the height of a helical antenna and therefore the pitch spacing and angle can be varied. This can in turn tune the far-field radiation pattern and gain of the antenna dynamically to adjust to new operating conditions. The radiation pattern can further be directed using a two-helix array. Finally, a helical antenna embodiment is implemented and measured using a shape memory alloy actuator. Measurement results confirm that while keeping the centre frequency constant, gain tunability can be attained using this structure.

Abstract translation: 提供了可用于适应宽带多标准手持通信设备的要求的新型可重构天线。 显示使用形状记忆合金弹簧致动器，可以改变螺旋天线的高度，并因此改变俯仰间距和角度。 这可以进一步调整远场辐射图和天线的增益，以适应新的操作条件。 可以使用双螺旋阵列进一步指导辐射图。 最后，使用形状记忆合金致动器来实现和测量螺旋天线实施例。 测量结果证实，当保持中心频率恒定时，可以使用这种结构获得增益可调性。

公开(公告)号：US08436784B2

公开(公告)日：2013-05-07

申请号：US12963489

申请日：2010-12-08

Applicant: Shahrzad Jalali Mazlouman ,  Alireza Mahanfar ,  Carlo Menon ,  Rodney G. Vaughan

Inventor： Shahrzad Jalali Mazlouman ,  Alireza Mahanfar ,  Carlo Menon ,  Rodney G. Vaughan

IPC: H01Q1/36

CPC classification number: H01Q1/362 ,  H01Q9/14

Abstract: Novel reconfigurable antennas are provided which may be used to accommodate the requirements for wideband multi-standard handheld communication devices. It is shown that using a shape memory alloy spring actuator, the height of a helical antenna and therefore the pitch spacing and angle can be varied. This can in turn tune the far-field radiation pattern and gain of the antenna dynamically to adjust to new operating conditions. The radiation pattern can further be directed using a two-helix array. Finally, a helical antenna embodiment is implemented and measured using a shape memory alloy actuator. Measurement results confirm that while keeping the centre frequency constant, gain tunability can be attained using this structure.

Abstract translation: 提供了可用于适应宽带多标准手持通信设备的要求的新型可重构天线。 显示使用形状记忆合金弹簧致动器，可以改变螺旋天线的高度，并因此改变俯仰间距和角度。 这可以进一步调整远场辐射图和天线的增益，以适应新的操作条件。 可以使用双螺旋阵列进一步指导辐射图。 最后，使用形状记忆合金致动器来实现和测量螺旋天线实施例。 测量结果证实，当保持中心频率恒定时，可以使用这种结构获得增益可调性。