A double-clamp longitudinal vibration mode magnetoelectric antenna and its preparation method
A clamping and longitudinal vibration technology, applied to antennas, loop antennas, antenna components, etc., can solve the problems of enhancing antenna communication capabilities, achieve small size, long signal propagation distance, and improve communication capabilities
Active Publication Date: 2021-07-13
XI AN JIAOTONG UNIV
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Problems solved by technology
The above problems limit the application of antennas in emerging fields such as integrated devices, Internet of Things, and distributed sensing. Therefore, enhancing the communication capabilities of antennas in electrical loss environments and miniaturizing antennas without affecting performance key challenges for development
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[0027] The present invention is further described below in conjunction with accompanying drawing:
[0028] see figure 1 , a double-clamp longitudinal vibration mode magnetoelectric antenna, including a piezoelectric stack 1, a magnetostrictive material 2, a coil 4 and a rigid frame 5; two piezoelectric stacks 1 are arranged symmetrically inside the rigid frame 5, and two piezoelectric stacks 1 The ends of the electric stacks 1 are arranged oppositely, a magnetostrictive material 2 is arranged between the two piezoelectric stacks 1, and a coil 4 is spirally wound on the magnetostrictive material 2;
[0029] The piezoelectric stack 1 is composed of multiple layers of piezoelectric materials 6 , and there is a layer of interdigital electrodes 3 between each adjacent layer of piezoelectric materials 6 . The piezoelectric material and the interdigital electrodes 3 are bonded together.
[0030] Hemispherical end caps 9 are arranged on the opposite surfaces of the two piezoelectric ...
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Abstract
A double-clamped longitudinal vibration mode magnetoelectric antenna and its preparation method, including a piezoelectric stack, a magnetostrictive material, a coil, and a rigid frame; two piezoelectric stacks are arranged symmetrically inside the rigid frame, and the two piezoelectric stacks The ends are arranged opposite to each other, and a magnetostrictive material is arranged between the two piezoelectric stacks, and a coil is spirally wound on the magnetostrictive material; the piezoelectric stack is composed of multiple layers of piezoelectric materials, and between each adjacent two layers of piezoelectric materials There is a layer of interdigitated electrode piezoelectric material bonded together with the interdigitated electrodes. The antenna of the present invention has the advantages of small size, low near-field loss, long signal propagation distance and high structural strength in the environment of high electric loss.
Description
technical field [0001] The invention belongs to the technical field of magnetoelectric antennas, in particular to a double-clamp longitudinal vibration mode magnetoelectric antenna and a preparation method thereof. Background technique [0002] Antennas are devices that can convert alternating current energy and electromagnetic wave energy, and are key components of many electronic devices, such as smartphones, radio frequency identification systems, radars, and other devices that have extensive and far-reaching requirements for antennas. One of the main challenges with existing antennas is their miniaturization. Traditional antennas mainly rely on electromagnetic resonance, and the size of the antenna is usually larger than one tenth of the wavelength of the electromagnetic wave, otherwise the bandwidth and gain of the signal will be affected, which makes it difficult to realize compact antennas and antenna arrays. In addition, many emerging electronic devices require ante...
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IPC IPC(8): H01Q7/00H01Q1/12H01Q1/22H01L41/083H01L41/12H01L41/25H01L41/257H01L41/27H01L41/29H01L41/31H01L41/47H10N30/03H10N30/045H10N30/05H10N30/06H10N30/07H10N30/50H10N35/00H10N35/01
CPCH01Q7/00H01Q1/12H01Q1/2283H10N35/00H10N30/50H10N30/03H10N30/05H10N30/07H10N30/06H10N30/045H10N35/01
Inventor 刘明胡忠强吴金根周子尧王志广贾超
Owner XI AN JIAOTONG UNIV