公开(公告)号：EP2281292A1

公开(公告)日：2011-02-09

申请号：EP09753866.4

申请日：2009-05-26

申请人： NXP B.V.

发明人： FAHS, Bassem ,  GUIRAUD, Lionel

IPC分类号： H01F17/00 ,  H01P5/10 ,  H03H7/42

CPC分类号： H01F17/0006 ,  H01F21/12 ,  H01F2017/0073 ,  H01P5/10 ,  H03H7/1775 ,  H03H7/42 ,  H03H2001/0078

摘要： Symmetrical eight-shaped balun (BALanced-to-UNbalanced converter) comprising a first and second eye (A, B), each eye comprising conducting tracks (10, 11) forming turns. The eyes (A, B) comprise an equal number of primary turns (11) which form a first conducting path from a first terminal (22) to a second terminal (21), in which in operation an electrical current flows in a first direction in a first eye and in a second direction in a second eye. Moreover, the eyes (A, B) further comprise an equal number of secondary turns (10) which form a second conducting path from a third terminal (16) to a fourth terminal (19), in which in operation an electrical current flows in a first direction in a first eye and in a second direction in a second eye. The geometrical and electrical middle points (13) of primary and secondary turns are all superposed and further are located in the same plane.

公开(公告)号：EP2266121B1

公开(公告)日：2015-06-10

申请号：EP09730711.0

申请日：2009-04-02

申请人： NXP B.V.

发明人： LE GUILLOU, Yann ,  FAHS, Bassem

IPC分类号： H01F17/00 ,  H01F27/34 ,  H03B5/18

CPC分类号： H01F17/0006 ,  H01F27/346 ,  H01F2017/0073 ,  H01F2017/0086 ,  H03B5/1841

公开(公告)号：EP2266121A1

公开(公告)日：2010-12-29

申请号：EP09730711.0

申请日：2009-04-02

申请人： NXP B.V.

发明人： LE GUILLOU, Yann ,  FAHS, Bassem

IPC分类号： H01F17/00 ,  H01F27/34

CPC分类号： H01F17/0006 ,  H01F27/346 ,  H01F2017/0073 ,  H01F2017/0086 ,  H03B5/1841

摘要： In a first aspect, the invention provides to a device comprising a substrate and an electrical conductor arranged between two terminals (A, B) and shaped for forming an inductor comprising at least two loops (1, 2) and arranged such that, at least locally, the far field is reduced. This arrangement results in an inductor which radiates a smaller magnetic field, also referred to as reduced EMI, which results in less noise generated in other inductive parts of an electronic circuit or system. The invention further provides in an advantageous embodiment proper balancing of the parasitic resistance and capacitance. By doing so the physical mid-point of 8-shaped inductors becomes the electrical mid-point (MP) which is beneficial when the inductor is used in a circuit. In a second aspect the invention provides an electronic system comprising the device according to the invention, wherein the electronic system comprises an LC- based voltage-controlled oscillator comprising the inductor, the electronic system being one of a group comprising: a multi-channel TV-receiver, a full-duplex transceiver, and a co-banding system. All these systems benefit from the symmetrical properties of the inductor. The better far-field compensation leads to a smaller VCO pulling effect which leads to a better performance of the system.

公开(公告)号：EP2055001A2

公开(公告)日：2009-05-06

申请号：EP07826094.0

申请日：2007-08-22

申请人： NXP B.V.

发明人： FAHS, Bassem ,  OZENNE, Patrick, A., Y.

IPC分类号： H03F3/08

CPC分类号： H03J3/08

摘要： The present invention provides a new method to accurately track and control the resonance frequency of a band-pass filter, and provide a solution for the sensitivity limitations against temperature and process variations. In particular, the invention provides a phase sensing module to obtain the phase difference between the input and output, and a negative feed-back control architecture which can be used to tune the filter's resonance over the input RF frequency. The invention, thus, relates to phase difference detection and feedback control acting on the filter resonance frequency.