US3863136A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency converting apparatus
Assignee: Boeing North American Inc
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Filing: 1973-10-26
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Granted: 1975-01-28
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Expires: 1993-10-26
Abstract
Abstract A single active element circuit for combining an input signal with a feedback signal to produce an output which is indicative in frequency of the sum and/or the difference of the frequency of the signals being mixed. The resulting circuit can be used in one embodiment for a divide by two or multiply by one and one-half converter and in a second embodiment can be used for combining a signal with a local oscillator frequency for either up or down frequency conversion.
Inventors
- 👤 Russell W Hanson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:00
CPC Classifications
H; H03; H03B; H03B21/00; H03D; H03D7/00; H03D7/12; H03D7/125
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
83 words
Frequency converter apparatus comprising, in combination: single active element means including first and second input means and output means; means for supplying an alternating signal of frequency f1 to said first input means of said active element means; filter means, connected between said output means and said second input means of said active element means, for passing only alternating signals of frequency f2 to said second input means; and apparatus output means connected to said filter means for providing converter frequency output signals.
Claim 2
Dependent Claim
83 words
Frequency converter apparatus comprising, in combination: single active element means including first and second input means and output means; means for supplying an alternating signal of frequency f1 to said first input means of said active element means; filter means, connected between said output means and said second input means of said active element means, for passing only alternating signals of frequency f2 to said second input means; and apparatus output means connected to said filter means for providing converter frequency output signals.
Claim 3
Dependent Claim
22 words
Converter apparatus as claimed in claim 1 wherein: said apparatus output means includes filter means for passing only signals of frequency 3f/2.
Claim 4
Dependent Claim
31 words
Apparatus as claimed in claim 1 wherein: said active element is a dual gate field effect transistor; and said apparatus output means is connected to the output of said filter means.
Claim 5
Dependent Claim
24 words
Apparatus as claimed in claim 1 wherein the signal frequency f2 passed by said filter means is equal to one-half the signal frequency f1.
Claim 6
Dependent Claim
193 words
Frequency converting apparatus comprising, in combination: field effect transistor means including drain means, source means, first gate means and second gate means; apparatus input means for providing an input signal to be frequency converted; ground potential means; impedance matching means comprising a series connected first capacitance means and first inductive means and further including an intermediate junction therebetween; means connecting said impedance matching means between said apparatus input means and said ground means; means connecting said intermediate junction of said impedance matching means to said first gate means of said field effect transistor means; first bias impedance means connected between said ground means and said second gate means; second bias impedance means, connected between said source means and said ground means; signal frequency bypass means connected in parallel with said second bias impedance means; positive power supply means; second inductive means connected between said drain means and said power supply means; second capacitance means connected between said drain means and said ground means; third Capacitance means connected between said positive power supply means and said ground means; and fourth capacitance means connected between said positive power supply means and said second gate means.
Claim 7
Dependent Claim
193 words
Frequency converting apparatus comprising, in combination: field effect transistor means including drain means, source means, first gate means and second gate means; apparatus input means for providing an input signal to be frequency converted; ground potential means; impedance matching means comprising a series connected first capacitance means and first inductive means and further including an intermediate junction therebetween; means connecting said impedance matching means between said apparatus input means and said ground means; means connecting said intermediate junction of said impedance matching means to said first gate means of said field effect transistor means; first bias impedance means connected between said ground means and said second gate means; second bias impedance means, connected between said source means and said ground means; signal frequency bypass means connected in parallel with said second bias impedance means; positive power supply means; second inductive means connected between said drain means and said power supply means; second capacitance means connected between said drain means and said ground means; third Capacitance means connected between said positive power supply means and said ground means; and fourth capacitance means connected between said positive power supply means and said second gate means.
Claim 8
Dependent Claim
215 words
Frequency converter apparatus comprising, in combination: field effect transistor means including drain means, source means, first gate means and second gate means; ground potential means; positive power supply means; signal supplying input means for supplying an input signal to be frequency converted; impedance matching means comprising first capacitive means and first inductive means connected in series and incorporating a first intermediate junction therebetween; means connecting said impedance matching means between said signal supplying input means and said ground means; means connecting said first intermediate junction to said first gate means of said field effect transistor means; first bias means connected between said ground means and said second gate means; second bias means connected between source means and said ground means; signal frequency bypass means connected in parallel with said second bias means; second capacitance means connected between said drain means and said ground means; second and third inductive means connected in series between said drain means and said positive power supply means and including a second intermediate junction therebetween; crystal oscillating means connected between said second gate means and said second intermediate junction; third capacitive means connected between said second intermediate junction means and said positive power supply means; and filter means connected to said second intermediate junction for providing a converted frequency output signal.
Claim 9
Dependent Claim
215 words
Frequency converter apparatus comprising, in combination: field effect transistor means including drain means, source means, first gate means and second gate means; ground potential means; positive power supply means; signal supplying input means for supplying an input signal to be frequency converted; impedance matching means comprising first capacitive means and first inductive means connected in series and incorporating a first intermediate junction therebetween; means connecting said impedance matching means between said signal supplying input means and said ground means; means connecting said first intermediate junction to said first gate means of said field effect transistor means; first bias means connected between said ground means and said second gate means; second bias means connected between source means and said ground means; signal frequency bypass means connected in parallel with said second bias means; second capacitance means connected between said drain means and said ground means; second and third inductive means connected in series between said drain means and said positive power supply means and including a second intermediate junction therebetween; crystal oscillating means connected between said second gate means and said second intermediate junction; third capacitive means connected between said second intermediate junction means and said positive power supply means; and filter means connected to said second intermediate junction for providing a converted frequency output signal.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |