WO1994026037B1 - Self-oscillating mixer circuits and methods therefor - Google Patents
Self-oscillating mixer circuits and methods thereforInfo
- Publication number
- WO1994026037B1 WO1994026037B1 PCT/US1994/004590 US9404590W WO9426037B1 WO 1994026037 B1 WO1994026037 B1 WO 1994026037B1 US 9404590 W US9404590 W US 9404590W WO 9426037 B1 WO9426037 B1 WO 9426037B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- signal
- frequency
- oscillating
- push
- recited
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Abstract
Self-oscillating mixer circuits (10) are used in communications systems. The circuits comprise a push-pull amplifier (40) for amplifying a signal having a first frequency to produce an amplified signal, a feedback loop coupled to the push-pull amplifier (40) for phase shifting the amplified signal during each half cycle of the push-pull amplifier, thereby creating an oscillating output signal, and a mixing element (70) for coupling the oscillating signal to the signal having the first frequency, thereby mixing the signal having the first frequency with the oscillating signal to produce a signal having a second frequency. The circuits described herein have transistors (80, 90, 120, 130) that operate near the class B mode to obtain optimal frequency conversion with minimal power consumption. These circuits will therefore find use in any communications-type system which requires a frequency converter.
Claims
1. A communications circuit for transforming a signal having a first frequency to a signal having a second frequency comprising: push-pull amplifier means for amplifying the signal having the first frequency to produce an amplified signal; feedback means coupled to the push-pull amplifier means for phase shifting the amplified signal during each half cycle of the push-pull amplifier means, thereby creating an oscillating output signal; and means coupled to said push-pull amplifier means for coupling said oscillating output signal to said signal having the first frequency, whereby said push-pull amplifier means mixes the signal having the first frequency with the oscillating signal to produce the signal of the second frequency.
2. The communications circuit recited in claim 1 wherein the push-pull amplifier means comprises a complimentary pair of bipolar transistors.
3. The communications circuit recited in claim 1 wherein the push-pull amplifier means comprises a pair of field effect transistors.
4. The communications circuit recited in claim 3 wherein the feedback means comprises at least one transmission line connected between a drain and a gate of one of the field effect transistors such that a substantially one hundred and eighty degree phase 'shift is introduced to the amplified signal . 5. The communications circuit recited in claim 4 further comprising means interfaced with a gate terminal of one of the pair of field effect transistors for locking the frequency of the oscillating signal to prevent the oscillating
5 signal from being free-running.
6. The communications circuit recited in claim 5 further comprising output means coupled to drain terminals of the pair of field effect transistors for receiving the signal
10 having the second frequency.
7. The communications circuit recited in claim 6 wherein the transistors operate at Class B for both oscillator and mixing functions.
15
8. The communications circuit recited in claim 7 wherein said Class B operation enables simultaneous realization of large locking range and high conversion gain.
20 9. The communications circuit recited in claim 8 wherein the circuit is tunable.
10. The communications circuit recited in claim 9 wherein the circuit exhibits phase control of said signals of
""^ said first and second frequency.
11. A self-oscillating mixer circuit for converting a signal having a first frequency to a signal having a second frequency comprising:
30 first amplifier means for receiving the signal of the first frequency and amplifying the signal of the first frequency during a half cycle of the signal of the first frequency; second amplifier means coupled to the first
35 amplifier means for amplifying the signal of the first frequency during an alternate half cycle of the - 21 -
signal of the first frequency; phase shift means coupled to said first and second amplifier means for shifting an amplified signal output from said first and second amplifier means to cause the amplified signal output to oscillate, thereby producing an oscillating signal; and means coupled to said phase shift means for mixing said oscillating signal with said signal of the first frequency, thereby producing the signal having the second frequency.
12. The self-oscillating mixer circuit recited in claim 11 wherein the first amplifier means and the second amplifier means are interfaced together to form a push-pull amplifier circuit.
13. The self-oscillating mixer circuit recited in claim 11 wherein the first and second amplifier means comprise a pair of complimentary bipolar transistors.
14. The self-oscillating mixer circuit recited in claim 12 wherein the first and second amplifier means comprise a pair of field effect transistors.
15. The self-oscillating mixer circuit recited in claim 14 wherein the phase shift means comprises at least one transmission line connected in a feedback loop between a drain and a gate of one of the field effect transistors such that a substantially one hundred and eighty degree phase shift is introduced to the amplified signal.
16. The self-oscillating mixer circuit recited in claim 15 further comprising means interfaced with a gate terminal of one of the pair of field effect transistors for locking the frequency of the oscillating signal to prevent the - 22 -
oscillating signal from being free-running.
17. The self-oscillating mixer circuit recited in claim 16 further comprising output means coupled to drain terminals of the pair of field effect transistors for receiving the signal having the second frequency.
18. The self-oscillating mixer circuit recited in claim 17 further comprising division means coupled to a drain terminal of one of the field the field effect transistors for dividing the oscillating signal into signals corresponding to subharmonic signals of the oscillating signal.
19. The self-oscillating mixer circuit recited in claim 18 further comprising phase detection means interfaced with the division means for detecting the subharmonic signals to provide a phase lock loop to the self-oscillating mixer circuit.
20. A method of converting a signal a having a first frequency to a signal having a second frequency comprising the steps of: introducing the signal having the first frequency to a push-pull amplifier, thereby producing an amplified output signal; feeding back said amplified output signal to said push-pull amplifier to create an oscillating output signal; and mixing said oscillating output signal with said signal having the first frequency, thereby converting said first signal to the signal having said second frequency.
21. The method recited in claim 20 wherein the push- pull amplifier means comprises a complimentary pair of bipolar transistors . - 23 -
22. The method recited in claim 21 wherein the push- pull amplifier means comprises a pair of field effect transistors.
5
23. The method recited in claim 22 wherein the feeding back step comprises interfacing the amplified output signal with at least one transmission line connected between a drain and a gate of one of the field effect transistors such
10 that a substantially one hundred and eighty degree phase shift is introduced to the amplified signal.
24. The method recited in claim 23 further comprising the step of locking the frequency of the oscillating
15 signal to prevent the oscillating signal from being free- running.
25. The method recited in claim 24 further comprising the step of coupling the signal having the second
20 frequency to an output circuit.
26. The communications circuit recited in claim 5, wherein said means for locking the frequency of the oscillating signal includes means for introducing an injection signal for
"5 synchronization with said oscillating signal.
27. The communications circuit recited in claim 26, wherein said feedback means includes a varactor diode for tuning said oscillating signal to thereby reduce phase
30 differences between said injection signal and said oscillating signal.
28. The communications circuit recited in claim 1, wherein said circuit is operable as part of an optically
35 controlled phased array antenna system. - 24 -
29. The communications circuit recited in claim 26, wherein said signal having said first frequency and said injection signal are received from an optical distribution network.
30. The communications circuit recited in claim 4, wherein said push-pull amplifier means and said at least one transmission line are integrally formed as part of millimeter wave oscillator (MM ) .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU68196/94A AU6819694A (en) | 1993-04-29 | 1994-04-25 | Self-oscillating mixer circuits and methods therefor |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US5471793A | 1993-04-29 | 1993-04-29 | |
| US08/054,717 | 1993-04-29 | ||
| US08/180,650 US5465418A (en) | 1993-04-29 | 1994-01-13 | Self-oscillating mixer circuits and methods therefor |
| US08/180,650 | 1994-01-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1994026037A1 WO1994026037A1 (en) | 1994-11-10 |
| WO1994026037B1 true WO1994026037B1 (en) | 1994-12-22 |
Family
ID=26733393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/004590 Ceased WO1994026037A1 (en) | 1993-04-29 | 1994-04-25 | Self-oscillating mixer circuits and methods therefor |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5465418A (en) |
| AU (1) | AU6819694A (en) |
| WO (1) | WO1994026037A1 (en) |
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| US6694128B1 (en) | 1998-08-18 | 2004-02-17 | Parkervision, Inc. | Frequency synthesizer using universal frequency translation technology |
| US7515896B1 (en) | 1998-10-21 | 2009-04-07 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same, and aperture relationships |
| US6061551A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for down-converting electromagnetic signals |
| US6049706A (en) | 1998-10-21 | 2000-04-11 | Parkervision, Inc. | Integrated frequency translation and selectivity |
| US6813485B2 (en) | 1998-10-21 | 2004-11-02 | Parkervision, Inc. | Method and system for down-converting and up-converting an electromagnetic signal, and transforms for same |
| US6370371B1 (en) | 1998-10-21 | 2002-04-09 | Parkervision, Inc. | Applications of universal frequency translation |
| US7236754B2 (en) | 1999-08-23 | 2007-06-26 | Parkervision, Inc. | Method and system for frequency up-conversion |
| US7295826B1 (en) | 1998-10-21 | 2007-11-13 | Parkervision, Inc. | Integrated frequency translation and selectivity with gain control functionality, and applications thereof |
| US7321735B1 (en) | 1998-10-21 | 2008-01-22 | Parkervision, Inc. | Optical down-converter using universal frequency translation technology |
| US6542722B1 (en) | 1998-10-21 | 2003-04-01 | Parkervision, Inc. | Method and system for frequency up-conversion with variety of transmitter configurations |
| US6560301B1 (en) | 1998-10-21 | 2003-05-06 | Parkervision, Inc. | Integrated frequency translation and selectivity with a variety of filter embodiments |
| US7039372B1 (en) | 1998-10-21 | 2006-05-02 | Parkervision, Inc. | Method and system for frequency up-conversion with modulation embodiments |
| US6061555A (en) | 1998-10-21 | 2000-05-09 | Parkervision, Inc. | Method and system for ensuring reception of a communications signal |
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| US6704549B1 (en) | 1999-03-03 | 2004-03-09 | Parkvision, Inc. | Multi-mode, multi-band communication system |
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| US6879817B1 (en) | 1999-04-16 | 2005-04-12 | Parkervision, Inc. | DC offset, re-radiation, and I/Q solutions using universal frequency translation technology |
| US6873836B1 (en) | 1999-03-03 | 2005-03-29 | Parkervision, Inc. | Universal platform module and methods and apparatuses relating thereto enabled by universal frequency translation technology |
| US6853690B1 (en) | 1999-04-16 | 2005-02-08 | Parkervision, Inc. | Method, system and apparatus for balanced frequency up-conversion of a baseband signal and 4-phase receiver and transceiver embodiments |
| US7110435B1 (en) | 1999-03-15 | 2006-09-19 | Parkervision, Inc. | Spread spectrum applications of universal frequency translation |
| JP3603995B2 (en) * | 1999-03-31 | 2004-12-22 | シャープ株式会社 | High frequency wireless communication device |
| US7693230B2 (en) | 1999-04-16 | 2010-04-06 | Parkervision, Inc. | Apparatus and method of differential IQ frequency up-conversion |
| US7065162B1 (en) | 1999-04-16 | 2006-06-20 | Parkervision, Inc. | Method and system for down-converting an electromagnetic signal, and transforms for same |
| US7110444B1 (en) | 1999-08-04 | 2006-09-19 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments and circuit implementations |
| US7054296B1 (en) | 1999-08-04 | 2006-05-30 | Parkervision, Inc. | Wireless local area network (WLAN) technology and applications including techniques of universal frequency translation |
| US7072390B1 (en) | 1999-08-04 | 2006-07-04 | Parkervision, Inc. | Wireless local area network (WLAN) using universal frequency translation technology including multi-phase embodiments |
| US8295406B1 (en) | 1999-08-04 | 2012-10-23 | Parkervision, Inc. | Universal platform module for a plurality of communication protocols |
| US7082171B1 (en) | 1999-11-24 | 2006-07-25 | Parkervision, Inc. | Phase shifting applications of universal frequency translation |
| US6963734B2 (en) | 1999-12-22 | 2005-11-08 | Parkervision, Inc. | Differential frequency down-conversion using techniques of universal frequency translation technology |
| US7327775B1 (en) * | 1999-12-23 | 2008-02-05 | Nokia Corporation | CDMA receiver |
| US7292835B2 (en) | 2000-01-28 | 2007-11-06 | Parkervision, Inc. | Wireless and wired cable modem applications of universal frequency translation technology |
| US7010286B2 (en) | 2000-04-14 | 2006-03-07 | Parkervision, Inc. | Apparatus, system, and method for down-converting and up-converting electromagnetic signals |
| US7554508B2 (en) | 2000-06-09 | 2009-06-30 | Parker Vision, Inc. | Phased array antenna applications on universal frequency translation |
| US6594478B1 (en) * | 2000-11-03 | 2003-07-15 | Motorola, Inc. | Self oscillating mixer |
| US7010559B2 (en) | 2000-11-14 | 2006-03-07 | Parkervision, Inc. | Method and apparatus for a parallel correlator and applications thereof |
| US7454453B2 (en) | 2000-11-14 | 2008-11-18 | Parkervision, Inc. | Methods, systems, and computer program products for parallel correlation and applications thereof |
| US7085335B2 (en) | 2001-11-09 | 2006-08-01 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
| US7072427B2 (en) | 2001-11-09 | 2006-07-04 | Parkervision, Inc. | Method and apparatus for reducing DC offsets in a communication system |
| DE10206074B4 (en) * | 2002-02-13 | 2004-04-15 | Ifm Electronic Gmbh | Microwave Sensor |
| US6975848B2 (en) | 2002-06-04 | 2005-12-13 | Parkervision, Inc. | Method and apparatus for DC offset removal in a radio frequency communication channel |
| US7321640B2 (en) | 2002-06-07 | 2008-01-22 | Parkervision, Inc. | Active polyphase inverter filter for quadrature signal generation |
| US7379883B2 (en) | 2002-07-18 | 2008-05-27 | Parkervision, Inc. | Networking methods and systems |
| US7460584B2 (en) | 2002-07-18 | 2008-12-02 | Parkervision, Inc. | Networking methods and systems |
| IL171817A (en) * | 2005-11-07 | 2013-03-24 | Beam Networks Ltd | Apparatus and methods for radar imaging based on injected push-push oscillators |
| US8115673B1 (en) * | 2007-08-11 | 2012-02-14 | Mcewan Technologies, Llc | Self-oscillating UWB emitter-detector |
| DE102010028987A1 (en) * | 2010-05-14 | 2011-11-17 | Johann Wolfgang Goethe-Universität Frankfurt am Main | Subharmonic mixer |
| JP5651824B2 (en) * | 2011-02-17 | 2015-01-14 | 国立大学法人東京工業大学 | Millimeter-wave wireless transceiver |
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| FR937998A (en) * | 1944-07-26 | 1948-10-12 | ||
| DE1186115B (en) * | 1963-09-24 | 1965-01-28 | Siemens Ag | Self-oscillating mixer with transistor |
| US4112373A (en) * | 1976-01-19 | 1978-09-05 | Hitachi, Ltd. | Self-excited mixer circuit using field effect transistor |
| CA1111500A (en) * | 1977-03-11 | 1981-10-27 | Shigeo Matsuura | Self-oscillation mixer circuits |
| JPS608651B2 (en) * | 1977-04-18 | 1985-03-05 | 株式会社日立製作所 | FET self-oscillating mixer |
| DE2808417A1 (en) * | 1978-02-27 | 1979-08-30 | Philips Patentverwaltung | Self-oscillating push=pull mixer for TV - has inputs and outputs of transistors connected to two capacitive voltage dividers to attain balanced characteristics |
| AT370266B (en) * | 1978-12-15 | 1983-03-10 | Philips Nv | SELF-SWINGING MIXER STAGE FOR FM RADIO RECEIVER |
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-
1994
- 1994-01-13 US US08/180,650 patent/US5465418A/en not_active Expired - Fee Related
- 1994-04-25 AU AU68196/94A patent/AU6819694A/en not_active Abandoned
- 1994-04-25 WO PCT/US1994/004590 patent/WO1994026037A1/en not_active Ceased
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