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    • 4. 发明申请
    • A FIELD REGULATOR
    • 现场调节器
    • WO2015157824A1
    • 2015-10-22
    • PCT/AU2015/050179
    • 2015-04-16
    • MINE SITE TECHNOLOGIES PTY LTD
    • SWEENEY, Peter JohnWILDT, Christopher Martin
    • H01F21/08H01F27/42H04B5/00
    • H01F19/04G01D5/2006H01F21/08H01F27/24H01F27/28H02M7/5387H02M2007/4818H03K3/017H03K17/954Y02B70/1441
    • The invention generally relates to a field regulator, particularly a field regulator for a resonant circuit, a transmitter including such a field regulator, a proximity detection system including such a transmitter, and a method of regulating a resonant circuit. In one aspect the invention provides a field regulator for a resonant circuit, the resonant circuit including an inductor coil around a core, the field regulator including a DC bias circuit configured to apply a DC bias current to the inductor coil for regulating an electromagnetic field generated by the inductor. The DC bias circuit can be used to selectively change the inductance of the inductor in the resonant circuit so as to maintain a consistent field strength in a changing environment, particularly to take into account the presence of large metal bodies which might otherwise adversely impact on operation. In particular, the DC bias current may be used to selectively change the natural frequency of the resonant circuit so as to shift the resonant circuit towards a desired resonance point.
    • 本发明一般涉及一种场稳压器,特别是用于谐振电路的场调节器,包括这种场调节器的发射器,包括这种发射器的接近检测系统以及调节谐振电路的方法。 一方面,本发明提供一种用于谐振电路的场调节器,该谐振电路包括围绕磁芯的电感线圈,该场调节器包括DC偏置电路,该DC偏置电路被配置为向该电感线圈施加DC偏置电流,用于调节产生的电磁场 由电感器。 DC偏置电路可以用于选择性地改变谐振电路中的电感器的电感,以便在变化的环境中保持一致的场强,特别是考虑到可能对操作有不利影响的大的金属体的存在 。 特别地,DC偏置电流可以用于选择性地改变谐振电路的固有频率,以使谐振电路朝向期望的谐振点移动。
    • 6. 发明申请
    • DYNAMICALLY BIASED INDUCTOR
    • 动态自动电感器
    • WO2012116946A1
    • 2012-09-07
    • PCT/EP2012/053243
    • 2012-02-27
    • SMA SOLAR TECHNOLOGY AGVIOTTO, MichaelRIGBERS, KlausFRIEBE, JensZACHARIAS, Peter
    • VIOTTO, MichaelRIGBERS, KlausFRIEBE, JensZACHARIAS, Peter
    • H01F29/14
    • H01F21/08H01F13/003H01F29/14H01F2003/103
    • An inductor apparatus (2) includes an inductor winding (3), a core (4) defining a magnetic circuit (1) for a magnetic flux generated by a current flowing through the inductor winding (3), at least one permanent magnet (5) magnetically biasing the core (4) by its permanent magnetisation, and a magnetisation device operable for adjusting a desired magnetisation of the permanent magnet (5). The at least one permanent magnet (5) is arranged within the magnetic circuit (1) of the magnetic flux generated by the current flowing through the inductor winding (3). The magnetisation device includes a magnetisation winding (7) and a circuitry (13) operable for subjecting the magnetisation winding (7) to magnetisation current pulses (8) generating a magnetic field at a location of the permanent magnet which is able to change the permanent magnetisation of the permanent magnet.
    • 电感器设备(2)包括电感器绕组(3),限定用于由流过电感线圈(3)的电流产生的磁通量的磁路(1)的芯体(4),至少一个永磁体 )通过其永久磁化对磁芯(4)进行磁偏置,以及可操作用于调节永磁体(5)的所需磁化的磁化装置。 至少一个永磁体(5)被布置在由流过电感线圈(3)的电流产生的磁通的磁路(1)内。 磁化装置包括磁化绕组(7)和可操作以使磁化绕组(7)经受磁化电流脉冲(8)的电路(13),所述磁化电流脉冲(8)在永磁体的位置处产生磁场,该位置能够改变永久磁体 永磁体磁化。
    • 9. 发明申请
    • ELECTRICALLY VARIABLE INDUCTOR, ASSOCIATED TUNABLE FILTER AND METHODS
    • 电可变电感器,相关电位滤波器及方法
    • WO2009089261A1
    • 2009-07-16
    • PCT/US2009/030292
    • 2009-01-07
    • HARRIS CORPORATION
    • PARSCHE, Francis EugeneSEYBOLD, John S.
    • H01F21/08H03H7/01H01F29/14
    • H01F21/08H01F29/146H03H5/12Y10T29/4902
    • The electrically tunable inductive device (10) includes an electromagnet (12) including an electromagnet core (14) and a bias or tuning coil (16) cooperating therewith to define opposing magnetic poles for generating a quiescent magnetic field that may be varied. An inductor (30) is tunable based upon the variable magnetic field and includes an inductor core (32) having a toroidal shape and fixed at a position adjacent the opposing magnetic poles (18, 20) of the electromagnet (12), and an inductor or signal coil (34) is wrapped around at least a portion of the inductor core. The electromagnet core may include a pair of opposing legs (40, 42) and a bight portion (44) therebetween defining a horseshoe shape. The inductor core may be positioned between ends (18, 20) of the opposing legs (40, 42) of the electromagnet core, and the tuning coil (16) may surround the bight portion of the electromagnet core. The electrically tunable inductive device may have the combination of fine precision, high speed and high power handling, useful for tunable RF filters.
    • 电可调电感装置(10)包括电磁体(12),其包括电磁铁芯(14)和与其配合的偏置或调谐线圈(16),以限定相对的磁极,用于产生可以变化的静态磁场。 电感器(30)基于可变磁场而是可调谐的,并且包括具有环形形状并且固定在邻近电磁体(12)的相对磁极(18,20)的位置处的电感器芯(32),以及电感器 或信号线圈(34)缠绕在电感器芯的至少一部分上。 电磁铁芯可以包括一对相对的支腿(40,42)和位于其间的弯曲部分(44),其间形成马蹄形状。 电感器芯可以位于电磁铁芯的相对支腿(40,42)的端部(18,20)之间,并且调谐线圈(16)可以围绕电磁铁芯的弯曲部分。 电可调电感器件可以具有精密,高速和高功率处理的组合,对可调RF滤波器是有用的。