Integrated transformer

Details Integrated transformer Integrated transformer

2004-10-13

2008-10-14

Nguyen, Tuyen (Department: 2832)

Metal working

Method of mechanical manufacture

Electrical device making

C336S200000

Reexamination Certificate

active

07434306

ABSTRACT:
A transformer comprises a substrate comprising a semiconductor material, a first conductor over the substrate, a second conductor over the substrate, and a magnetic layer over the substrate. The first conductor defines a generally spiral-shaped signal path having at least one turn. The second conductor defines a generally spiral-shaped signal path having at least one turn.

REFERENCES:
patent: 3607462 (1971-09-01), Laing
patent: 3881244 (1975-05-01), Kendall
patent: 3905883 (1975-09-01), Hanazono et al.
patent: 4543553 (1985-09-01), Mandai et al.
patent: 4791719 (1988-12-01), Kobayashi et al.
patent: 4797648 (1989-01-01), Kaneko et al.
patent: 4816784 (1989-03-01), Rabjohn
patent: 4884156 (1989-11-01), Miyakawa et al.
patent: 4959631 (1990-09-01), Hasegawa et al.
patent: 5047296 (1991-09-01), Miltenberger et al.
patent: 5095357 (1992-03-01), Andoh et al.
patent: 5121852 (1992-06-01), Wilkes
patent: 5169713 (1992-12-01), Kumurdjian
patent: 5221459 (1993-06-01), Okano et al.
patent: 5420558 (1995-05-01), Ito et al.
patent: 5446311 (1995-08-01), Ewen et al.
patent: 5469399 (1995-11-01), Sato et al.
patent: 5530415 (1996-06-01), Takaya et al.
patent: 5583474 (1996-12-01), Mizoguchi et al.
patent: 5609946 (1997-03-01), Korman et al.
patent: 5635892 (1997-06-01), Ashby et al.
patent: 5694030 (1997-12-01), Sato et al.
patent: 5705287 (1998-01-01), Doerner et al.
patent: 5781071 (1998-07-01), Kusunoki
patent: 5801100 (1998-09-01), Lee et al.
patent: 5834825 (1998-11-01), Imai
patent: 5877533 (1999-03-01), Arai et al.
patent: 5892425 (1999-04-01), Kuhn et al.
patent: 5952704 (1999-09-01), Yu et al.
patent: 5961746 (1999-10-01), Nepela
patent: 5976715 (1999-11-01), Chen et al.
patent: 6031445 (2000-02-01), Marty et al.
patent: 6033782 (2000-03-01), Hubbard et al.
patent: 6037649 (2000-03-01), Liou
patent: 6040226 (2000-03-01), Wojnarowski et al.
patent: 6067002 (2000-05-01), Fujino et al.
patent: 6103136 (2000-08-01), Han et al.
patent: 6114937 (2000-09-01), Burghartz et al.
patent: 6121852 (2000-09-01), Mizoguchi et al.
patent: 6166422 (2000-12-01), Qian et al.
patent: 6191495 (2001-02-01), Kossives et al.
patent: 6201287 (2001-03-01), Forbes
patent: 6207303 (2001-03-01), Tomita
patent: 6240621 (2001-06-01), Nellissen et al.
patent: 6281560 (2001-08-01), Allen et al.
patent: 6291305 (2001-09-01), Huang et al.
patent: 6404317 (2002-06-01), Mizoguchi et al.
patent: 6441715 (2002-08-01), Johnson
patent: 6593841 (2003-07-01), Mizoguchi et al.
patent: 378417 (2000-01-01), None
patent: 386310 (2000-04-01), None
patent: 411481 (2000-11-01), None
patent: 41 17 878 (1991-12-01), None
patent: 0725407 (1995-02-01), None
patent: 0 295 028 (1998-12-01), None
patent: 0 884 783 (1998-12-01), None
patent: 61 020311 (1986-01-01), None
patent: 403214411 (1991-09-01), None
patent: 5-81615 (1993-04-01), None
patent: 406124843 (1994-05-01), None
patent: 07272932 (1996-02-01), None
patent: WO 01/39220 (1995-10-01), None
patent: PCT/US02/000848 (2002-10-01), None
patent: PCT/US02/001555 (2002-10-01), None
patent: PCT/US02/001742 (2002-10-01), None
Oshiro, O., et al. “A Novel Miniature Planar Inductor”; 1987 IEEE Transactions on Magnetics, vol. Mag-23, Sep. 1987, pp. 3759-3761, no date.
Shirakawa, K., et al., “Thin film cloth-structured inductor for magnetic integrated circuit”, IEEE Transactions on Magnetic, vol. 26, No. 5., XP000150520, 2262-2264, Sep. 1, 1990.
Yamaguchi, M., et al., “Characteristics of magnetic thin-film inductors at large magnetic field”, Proceedings of the Int'l Magnetics Conf. XP000581941, BS-1, Apr. 18, 1995.
Brandon, E., et al., “Microinductors for spacecraft power electronics,” Magnetic Materials, Processes, and Device VI Applications to Storage and Microelectromechanical systems (MEMS), 2001, pp. 559-567, vol. 2000-29, The Electrochemical Society, Inc., Pennington, New Jersey, no month.
Mohan, S., et al., “Simple accurate expressions for planar spiral inductances,” IEEE Journal of Solid-State Circuits, Oct. 1999, pp. 1419-1424, vol. 34, No. 10, no date.
Park, J., et al. “Batch-fabricated microinductors with electroplated magnetically anisotropic and laminated alloy cores,” IEEE Transactions on Magnetics, Sep. 1999, pp. 4291-4300, vol. 35, No. 5, no date.
Yamaguchi, M., et al. “MGHz-drive magnetic thin-film inductors for RF integrated circuits using micro-patterned granular film” IEEE, 1990, no month.
Nikenjad, A., et al., “Analysis, design, and optimization of spiral inductors and transformers Si RF IC's,” IEEE Journal of Solid-State Circuits, Oct. 1998, pp. 1470-1481, vol. 33, No. 10, no date.
Gardner, D., et al., “Mechanical stress as a function of temperature for aluminum alloy films,” Journal of Applied Physics, Feb. 15, 1990, pp. 1831-1845, vol. 67.
Baba, M., et al., “GHz-drive magnetic thin-film inductor using CoNbZr film,” journal of the magnetics society of Japan, 2000, no month.
Kobyashi, Y, et al, “New type micro cloth-inductor and transformer with thin amorphous wires and multi-thin coils,” IEEE Transactions on Magnetics, Sep. 1992, pp. 3012-3014, vol. MAG-21, No. 5, no date.
Matsuki, H., et al., “A new cloth inductor using amorphous fiber,” IEEE Transactions on Magnetics, Sep. 1985, pp. 1738-1740, vol. MAG-21, No. 5, no date.
Korenivski, V., et al., “Magnetic film inductors for radio frequency applications,” Journal of Applied Physics, Nov. 15, 1997, pp. 5247-5254, vol. 82.
Yamaguchi, M., et al., “Microfabrication and characteristics of magnetics thin-film inductors in the ultra high frequency region,” Journal of Applied Physics, Jun. 1, 1999, pp. 7919-7922, vol. 85, No. 11.
Long, J., et al., “The modeling, characterization, and design of monolithic inductors for silicon RF IC's,” IEEE Journal of Applied Physics, Jun. 1, 1999, pp. 1919-1922, vol. 85, No. 11.
Yamaguchi, M., et al., “Magnetic thin-film inductor for RF integrated circuits,” Extended Abstracts of the 1999 International Conference on Solid-State Devices and Materials, 1999, pp. 580-281, Tokyo, no month.
Sato, T., et al., “New applications of Nanocrystalline Fe(Co-Fe)Hf-O magnetic films to micromagnetic devices,” Journal of Applied Physics, Jun. 1, 1998, pp. 6658-6660, vol. 83, No. 11.
Fessant, A., “Influence of in-lane anisotropy and eddy currents on the frequency spectra of the complex permeability of amorphous coZr films,” IEEE Transactions of Magnetics, Jan. 1993, pp. 82-87, vol. 29, No. 1, no date.
Yabukami, S., et al., “Noise analysis of a MHz-3 GHz magnetic thin film permeance mete,” Journal of Applied Physics, Apr. 15, 1999, pp. 5148-5150, vol. 5, No. 8.
Yamaguchi, M., et al., “Magnetic films for planar inductive components and devices,” Handbook of Thin Film Devices, edited by M.H. Francombe, 2000, pp. 85-185, vol. 4, Magnetic Thin Film Devices, no month.
Mohan, S, et al., “Bandwidth extension in CMOS with optimized on-chip inductors,” IEEE Journal of Solid-State Circuits, Mar. 2000, pp. 346-355, vol. 35, No. 3.
O'Donnel, T., et al., “Microtransformers and inductors using permalloy thin films,” Preparation, Properties, and Applications of Thin Ferromagnetic films, Jun. 2000, pp. 45-52, no date.
Yue, C., et al. “On-chip spiral inductors with patterned ground shields for Si-based RF IC's,” IEEE Journal of Solid-State Circuits, May 1998, pp. 743-752, vol. 33, No. 5, no date.
Tomita, H., et al., “Oblique-field annealing effect for In-plane magnetic anisotropy of magnetic Co-Nb-Zr thin films,” IEEE Transactions of Magnetics, May 1994, pp. 13369-1339, vol. 30, No. 3, no date.
Gardner, et al., “High frequency (GHz) and low resistance integrated inductors using magnetic materials,” 3 pgs., IEEE 2001, Intel Corporation, Components Research, Santa Clara, California, Department of Materials Science and Engr., Stanford University, no month.

Affiliated with

Also associated with

Rating

Integrated transformer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Integrated transformer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated transformer will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3997494