Oscillators – With frequency adjusting means – Step-frequency change
Patent
1997-04-28
1999-02-16
Gensler, Paul
Oscillators
With frequency adjusting means
Step-frequency change
257531, 330305, 331181, 334 56, 336200, H03B 508, H03J 524, H03F 304
Patent
active
058724893
ABSTRACT:
An integrated, tunable inductance network features a number of fixed inductors fabricated on a common substrate along with a switching network made up of a number of micro-electromechanical (MEM) switches. The switches selectably interconnect the inductors to form an inductance network having a particular inductance value, which can be set with a high degree of precision when the inductors are configured appropriately. The preferred MEM switches introduce a very small amount of resistance, and the inductance network can thus have a high Q. The MEM switches and inductors can be integrated using common processing steps, reducing parasitic capacitance problems associated with wire bonds and prior art switches, increasing reliability, and reducing the space, weight and power requirements of prior art designs. The precisely tunable high-Q inductance network has wide applicability, such as in a resonant circuit which provides a narrow bandwidth frequency response which peaks at a specific predetermined frequency, making possible a highly selective performance low noise amplifier (LNA), or in an oscillator circuit so that a precise frequency of oscillation can be generated and changed as needed.
REFERENCES:
patent: 2295173 (1942-09-01), Hoffmann et al.
patent: 2296100 (1942-09-01), Foster et al.
patent: 3087110 (1963-04-01), Tomonoh et al.
patent: 3427569 (1969-02-01), Abramson
patent: 4564843 (1986-01-01), Cooper
patent: 4613824 (1986-09-01), Rinderle
patent: 4701732 (1987-10-01), Nestlerode
patent: 5416356 (1995-05-01), Staudinger et al.
patent: 5578976 (1996-11-01), Yao
William H. Hayt, Jr., Jack E. Kemmerly, Engineering Circuit Analysis, McGraw-Hill, Inc.. 1971, pp. 396-408.
Richard C. Dorf, The Engineering Handbook, CRC Press, 1993, pp. 1011-1013.
J. Jason Yao, M. Frank Chang, "A Surface Micromachines Miniature Switch For Telecommunications Applications With Signal Frequencies From DC up to 4 GHZ", Tech. Digest, 1995, pp. 384-387.
W.T. Wang, Introduction to Semiconductor Technology, John Wiley & Sons, 1990, pp. 422-433.
Bartlett James L.
Chang Mau Chung F.
Marcy, 5th Henry O.
Mehrotra Deepak
Pedrotti Kenneth D.
Gensler Paul
Rockwell Science Center LLC
LandOfFree
Integrated tunable inductance network and method 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 tunable inductance network and method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integrated tunable inductance network and method will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2065606