USH954H
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lumped element digital phase shifter bit
Assignee: United States Department of the Air Force
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Filing: 1990-07-05
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Granted: 1991-08-06
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Expires: 2010-07-05
Abstract
Abstract Digital phase shifter bits of predetermined phase shift capability and lumped element network component fabrication arrangement are described. A variety of phase shifter bits including the capability of eleven and one-quarter, twenty-two and one-half, forty-five, ninety, and one hundred eighty degrees of phase shift are included. Also included are a number of high-pass/low-pass and switching transistor inclusive phase shifter bit arrangements. Both electrical schematic diagram and integrated circuit embodiments of the phase shifting networks are also disclosed.
Inventors
- 👤 Mark R. Lang
- 👤 Ronald J. Naster
- 👤 Conrad E. Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:32
CPC Classifications
H; H01; H01P; H01P1/00; H01P1/18; H01P1/185
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
92 words
Integrated circuit digital phase shifter apparatus for use at microwave signal frequencies below ten gigahertz comprising the combination of: an integrated circuit die member having a semiconductor body portion and an upward facing planar surface; a plurality of discrete electrical inductance elements disposed in predetermined physical location array across said die member upward facing planar surface; and a plurality of discrete electrical capacitance elements disposed in predetermined physical location array across said upward facing planar surface of said die member in predetermined phase shifting electrical network interconnection with said electrical inductance elements.
Claim 2
Dependent Claim
92 words
Integrated circuit digital phase shifter apparatus for use at microwave signal frequencies below ten gigahertz comprising the combination of: an integrated circuit die member having a semiconductor body portion and an upward facing planar surface; a plurality of discrete electrical inductance elements disposed in predetermined physical location array across said die member upward facing planar surface; and a plurality of discrete electrical capacitance elements disposed in predetermined physical location array across said upward facing planar surface of said die member in predetermined phase shifting electrical network interconnection with said electrical inductance elements.
Claim 3
Dependent Claim
48 words
The phase shifter apparatus of claim 1 wherein said phase shifting electrical network generates one of the phase shift values of eleven and one quarter degrees, twenty-two and one-half degrees, forty-five degrees, ninety degrees, and one hundred eighty degrees at a predetermined frequency below said ten gigahertz frequency.
Claim 4
Dependent Claim
31 words
The phase shifter apparatus of claim 1 further including a plurality of phase shifter selecting transistor switch members connected in predetermined electrical circuit with said electrical inductance and electrical capacitance elements.
Claim 5
Dependent Claim
16 words
The phase shifter apparatus of claim 3 wherein said transistor switch members comprise field effect transistors.
Claim 6
Dependent Claim
29 words
The phase shifter apparatus of claim 3 wherein said transistor switch members comprise electrical shunting means connected across plural elements of said network for altering the network frequency response.
Claim 7
Dependent Claim
22 words
The phase shifter apparatus of claim 3 wherein said transistor switch members are connected into a single pole double throw switch configuration.
Claim 8
Dependent Claim
26 words
The phase shifter apparatus of claim 1 wherein said electrical inductance elements and electrical capacitance elements comprise one of a tee configured and a pi-configured network.
Claim 9
Dependent Claim
23 words
The phase shifter apparatus of claim 1 wherein said electrical inductance elements include concentric circle spiral disposed conductors received on said die surface.
Claim 10
Dependent Claim
21 words
The phase shifter apparatus of claim 1 wherein said electrical network comprises both a low-pass and a high-pass frequency selective network.
Claim 11
Dependent Claim
19 words
The phase shifter apparatus of claim 1 wherein said phase shifting electrical network comprises a three terminal electrical network.
Claim 12
Dependent Claim
46 words
The phase shifter apparatus of claim 1 further including a pi configured electrical network wherein the stem portion of the pi network includes shunt connected inductance and capacitance elements, and the input and output arms of the pi network include series connected inductance and capacitance elements.
Claim 13
Dependent Claim
21 words
The phase shifter apparatus of claim 11 wherein said input and output arm inductive elements are shunted by field effect transistors.
Claim 14
Dependent Claim
45 words
The phase shifter apparatus of claim 1 further including an input circuit node and an output circuit node and first and second circuit paths connecting said nodes with each of said circuit paths including a combination of electrical reactance elements and field effect transistor elements.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-08-05 | 1995-02-04 | 1995-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-08-05 | 1999-02-04 | 1999-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-08-05 | 2003-02-04 | 2003-08-06 | $7700.00 | Window Closed / Lapsed |