CN102484451A - Method Of Operation Of A Passive High-Frequency Image Reject Mixer - Google Patents
Method Of Operation Of A Passive High-Frequency Image Reject Mixer Download PDFInfo
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- CN102484451A CN102484451A CN2010800398771A CN201080039877A CN102484451A CN 102484451 A CN102484451 A CN 102484451A CN 2010800398771 A CN2010800398771 A CN 2010800398771A CN 201080039877 A CN201080039877 A CN 201080039877A CN 102484451 A CN102484451 A CN 102484451A
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/16—Multiple-frequency-changing
- H03D7/165—Multiple-frequency-changing at least two frequency changers being located in different paths, e.g. in two paths with carriers in quadrature
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/18—Modifications of frequency-changers for eliminating image frequencies
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Abstract
A passive implementation of an image reject mixer (IRM), capable of operating at very high frequency, is operative according to the disclosed method. The IRM comprises a quad MOS multiplier and a lumped-element hybrid, resulting in a passive IRM. Operative at a radio frequency (RF) of tens of GHz with an intermediate frequency (IF) of several GHz. The RF+ and RF- signals are provided to two quad MOS multipliers. A local oscillator signal (LO) is used to provide LO+ and LO- signals to one of the multipliers and by providing the LO to a phase shifter, generated are a ninety degree shifted LO+ and LO- signals provided to the other multiplier. Providing the hybrids with the outputs of both multipliers and selecting an appropriate IF signal from each of the hybrids ensures the proper operation of the passive IRM.
Description
Support statement
Impel exploitation work of the present invention by Greece's fund and ERDF; (ERDF) at Greece's national strategy reference frame; (NSRF) invest jointly according to the MIKRO2-34 contract of the project " millimeter wave backhaul radio communication-THETA of future generation; (Next Generation Millimeter Wave Backhaul Radio-THETA) " in the engineering " the Greece's technological cluster in the microelectronics second stage rescue measure; (Hellenic Technology Clusters in Microelectronics-Phase-2 Aid Measure) " under the 2007-2013.
Technical field
The present invention relates in general to image-reject mixer, the method for operation of the passive image-reject mixer that relates more specifically to work under up to several ten thousand megahertzes and higher frequency.
Background technology
Along with the radio communication development, operating frequency significantly improves.What use at present is the frequency of tens GHz, and hope frequency can increase along with the time day by day.Also recognize, the operation under the high frequency to power with demand strict technology.That is to say that for same design, operating frequency is high more, power consumption is big more.Lower frequency range also need be used the abstruse manufacturing technology that can solve frequency requirement effectively, and such as GaAs (GaAs), but such manufacturing technology has cost from technical standpoint and power angle.As long as low, can allow such technology, but when the demand of producing in batches is improved, need to utilize power and the more not abstruse technology more economized such requirement of products.
In order to reduce cost, the trend of shifting to lower-cost treatment technology from expensive treatment technology is arranged, for example, shift to CMOS (complementary metal oxide semiconductors (CMOS)) from GaAs.Yet lower-cost technology (such as CMOS) possibly have other shortcoming.In the field of the image-reject mixer of under in order to the frequency in the scope of tens GHz, working (IRM), do not use technology at present as yet, therefore do not realize the advantage relevant with such technology based on CMOS.And, using active block, Gilbert cell is the solution of giving prominence to.Another kind of method has been shown among Fig. 1.MOS (metal-oxide semiconductor (MOS)) down-conversion multiplier frequency mixer 100 comprises four MOS unit 110 and transreactance amplifier 120, and transreactance amplifier 120 is used for converting the output current of mixting circuit into voltage signal.MOS down-conversion multiplier frequency mixer 100 also plays the effect of low pass filter together with capacitor 130, passes through only to make intermediate frequency (IF).Four MOS unit 110 are the balanced mixers that can be used as the operation of multiplication frequency mixer.The RF signal of input place of frequency mixer and local oscillator (LO) signal multiplication.The low pass filter of this circuit 100 ends the product of RF+LO, simultaneously holding frequency IF RF-LO.
Prior art be have circumscribed because it can not provide the frequency mixer with following character: low in energy consumption, in the technical realization of cost-effective integrated circuit (IC), and can be at high intermediate frequency (IF), preferably in the GHz scope, work.Therefore, it will be favourable the circumscribed solution that overcomes prior art being provided.
Description of drawings
Fig. 1 is multiplication down-conversion mixer (prior art).
Fig. 2 is the sketch map according to the passive IRM of principle realization of the present invention.
Fig. 3 is the mixer element as the element of passive IRM.
Fig. 4 is the flow chart of the operation of passive IRM.
Embodiment
Device of the present invention is can under unusual high-frequency, work and can be according to the complete passive implementation of the image-reject mixer (IRM) of disclosed method work.This IRM comprises a pair of four MOS multipliers and a pair of lamped element blender, produces passive IRM.Can in the radio frequency (RF) of tens GHz and in the intermediate frequency (IF) of several GHz, operate.Signal RF+ and RF-provide to two four MOS multipliers.Local oscillator signals (LO) is used for signal LO+ and LO-a multiplier to the said multiplier being provided, and through LO is provided to phase shifter, produces phase shift 90 degree LO+ signal and LO-signals, and provide to another multiplier.The output of two multipliers is offered said blender and selects suitable IF signal to guarantee the true(-)running of passive IRM from each blender.
According to principle of the present invention, change the blender solution shown in Fig. 1 into IRM, the filtering operation that wherein utilizes transreactance amplifier to realize is replaced by the lamped element blender.Further describe this blender among Fig. 3 below, this blender plays the effect of band pass filter and mirror image restraining device simultaneously.The result is complete passive circuit, and the operation of this complete passive circuit does not need bias current.Referring now to Fig. 2, Fig. 2 shows the sketch map of the passive IRM 200 that realizes according to principle of the present invention.Basically, it comprises common four MOS elements 110 in dark triode region work (110-1 and 110-2 also participate in and see Fig. 1), phase shifter 220 and blender 230.The purpose of image-reject mixer 200 is to suppress mirror image (IM) signal of down-conversion.There is RF signal and local oscillator (LO) signal.The IM signal is IM=RF+2*IF.Therefore, if RF＜LO, then IF=LO-RF and IM=RF+2*IF=RF+2* (LO-RF)=2*LO-RF.When down-conversion took place, this became: 2*LO-RF-LO=LO-RF=IF.In other words, produce unwanted frequency IM and get into the IF signal, therefore need the RF and the unwanted IM branch of needs be opened.This solution is utilized IRM and is utilized this blender according to the present invention.Therefore, the IF composition from the RF frequency of needs is carried in first output of this blender, and the IF composition from the IM frequency is carried in second output of blender.The RF signal with respect to the locator qualification of LO signal which output carry which composition.This need confirm RF greater than LO still be RF less than LO, select required output from this blender immediately then, as among Fig. 3 further shown in.The combination of passive frequency mixer shown in Fig. 2 (no source-representation can not or not provide gain at least) and blender not only provides mirror image to suppress; Also do in order to suppress radio-frequency component (RF+LO) and to eliminate requirement, because blender is directly to be driven by the electric current from four MOS transistors electric current to voltage transitions as passive filter.
In order further to understand principle of the present invention, with reference to Fig. 3, Fig. 3 illustrates lamped element blender 230.Blender 230 comprises four inductors and four capacitors, and these four inductors and four capacitors are designed to simulate the effect of typical microwave branch line coupler, and does not utilize the single chip microwave integrated circuit technology.The input of blender 230 " I " is connected to the end of capacitor 234-1, the other end ground connection of capacitor 234-1.Two inductors are that inductor 232-1 and inductor 232-4 also are connected to input " I ".The other end of inductor 232-1 is connected to input " Q " and the end of capacitor 234-2 and the end of inductor 232-2 of blender 230, the other end ground connection of capacitor 234-2.The other end of inductor 232-4 is connected to the terminal 237 of blender 230 and the terminal of capacitor 234-3 and inductor 232-3, the other end ground connection of capacitor 234-3.The other end of inductor 232-2 and inductor 232-3 is connected mutually and is connected to the end of capacitor 234-4 and the lead-out terminal 238 of blender 230, the other end ground connection of capacitor 234-4.Switch 236 confirms that which signal that exists in terminal 237 and the terminal 238 is " IF that needs " signal and the output IF that correspondingly this terminal is connected to blender 230
oWhen RF＞LO, switch has primary importance, and when RF＜LO, this switch has the second place.In an embodiment of the invention, one or more capacitors 234 are tunable, thus can tuning this blender.For this reason, can use switched capacitor bank (not shown) or the variable capacitor (not shown) known in the technology of this area, produce variable blender 230.In the exemplary application of IF more than having 1GHz, in the 1-7GHz scope, the inductor scope is 1-6nH such as IF, and capacitor ranges is 1-6pF.Inductor in these scopes and capacitor can easily with cheaply be realized in such as the CMOS technology in general manufacturing technology, can realize such integrated circuit (IC) in the cost efficiency highland thus.And, use blender 230 to eliminate in the prior art scheme demand in output place of IRM 200 to the operational amplifier of output place of blender.In another embodiment, IF is higher than 5GHz.
In an embodiment of the invention (Fig. 2), one group of switch (not shown) can directly be connected blender output place, makes only to select an output in these two outputs at every turn.Blender 230-1 provides final IF+, and blender 230-2 provides final IF-.Use two terminals 237,238 of blender or make their available reasons in primary importance be: allow when the RF frequency is big to the output Signal Processing with the LO frequency greater than the situation of RF frequency in the time different to exporting Signal Processing.Through having switch, can select suitable output according to the frequency plan of the operation of receiver chain in blender output place.If frequency is fixed to fixed system to one, then this that yes is unwanted because under these circumstances, can use an output in two outputs and not utilize switch.Another output can be through 50 ohm the simple ground connection of resistance.In another embodiment, the output of two IF signals " I " can convert difference output into double amplitude single IF signal output mutually with " Q ".Suitable blender output has mirror image (IM) composition that is suppressed, and this is the mirror image inhibition operation of frequency mixer.According to the present invention, blender 230 has dual role: they export composition RF+LO as the band pass filter operation to suppress frequency mixer, and suppress assembly operation as IM.
The considerable advantage that the IRM of complete passive realization provides low-power consumption to realize and especially use general CMOS manufacturing technology.Especially, the IRM of complete passive realization allows to high frequency realization IRM, and for example, 90 nanometer CMOS technology realizes 60GHz IRM, and not so this can not realize in such technology.Utilize blender 230 to realize the high-frequency I F in the scope of several GHz, said scope with up to the RF frequency of 60GHz compatibility mutually.Utilize prior art solutions, the combination of active mixer and blender can not be to so high RF operation.Vice versa, and the combination of the operational amplifier of passive frequency mixer and alternative blender is inappropriate for such IF scope.Therefore, the present invention has overcome the inferior position of prior art.Also through combining MOS switch and blender to use the blue lucky coupler (these elements all are suitable for the technology based on silicon) of realization phase shifter, do not damage in the RF of tens GHz scope and work among the IF in the scope at several GHz and realize the required performance of frequency mixer of the circuit on the IC.
Referring now to Fig. 4, Fig. 4 shows the flow chart 400 of the operation of passive IRM 200.In S410, signal RF+ and signal RF-provide to four MOS multipliers, for example the multiplier 110-1 of Fig. 2 and multiplier 110-2.In S420, signal LO+ and signal LO-provide one four MOS multiplier to the said four MOS multipliers, for example multiplier 110-1.In S430, signal LO+ and signal LO-are by phase shifter (for example, phase shifter 220) phase shift 90 degree, to produce LO+ phase shift signalling and LO-phase shift signalling.In S440, LO+ phase shift signalling and LO-phase shift signalling provide to another multiplier, for example multiplier 110-2.In step S450, signal " I IF+ " provides the input " I " to the first lamped element blender, and the first lamped element mixer instance is as being blender 230-1; Signal " Q IF+ " provides the input " Q " to the first lamped element blender, the first lamped element mixer instance such as blender 230-1; Signal " I IF-" provides the input " I " to the second lamped element blender, this second lamped element mixer instance such as blender 230-2; And signal " Q IF-" provides the input " Q " to the second lamped element blender, this second lamped element mixer instance such as blender 230-2.In S460, whether RF is greater than the LO frequency in inspection, if continue to carry out S470; Otherwise continue to carry out S480.In S470, in response to the judgement among the S460, the switch in each blender 230 is placed on primary importance, for example is position 237 for switch 236.In S480, in response to the judgement among the S460, the switch in each blender 230 is placed on the second place, for example, is position 238 for switch 236.In step S490, no matter carry out through S470 or S480, from first blender (for example, blender 230-1) signal IF+ is provided, (for example, blender 230-2) provides signal IF-from second blender.
Although for purpose of explanation and also unrestricted purpose discloses and described some preferred implementation of the present invention, those skilled in the art will understand, and can do the various changes of form and details and not break away from the spirit and scope of the present invention the present invention.Special, disclosed circuit is suitable for any manufacturing process based on silicon, comprises MOS, BiCMOS (bipolar complementary metal oxide semiconductor) and CMOS technology.The upper limit of RF is confirmed for how much by technology.
Claims (40)
1. method that is used to operate passive image-reject mixer (IRM) said method comprising the steps of:
To a MOS multiplier radio-frequency input signals RF+ and RF-are provided;
To a said MOS multiplier local oscillator input signal LO+ and LO-are provided;
In response to the said radio-frequency input signals RF+ that offers a said MOS multiplier and RF-and said local oscillator input signal LO+ and LO-, produce intermediate frequency output signal I IF+ and I IF-;
Utilize passive phase shifter, produce LO+ phase shift 90 ° of output signal and 90 ° of output of LO-phase shift signal respectively from said local oscillator input signal LO+ and LO-;
To the 2nd MOS multiplier said radio-frequency input signals RF+ and RF-are provided;
To said the 2nd MOS multiplier said LO+ phase shift 90 ° of output signal and 90 ° of output of said LO-phase shift signal are provided;
In response to the said radio-frequency input signals RF+ that offers said the 2nd MOS multiplier and RF-and said LO+ phase shift 90 ° of output signal and 90 ° of output of said LO-phase shift signal, produce IF output signal Q IF+ and Q IF-;
In response to said radio frequency be greater than or less than the judgement of the frequency of said local oscillator and also in response to said output signal I IF+ and said output signal Q IF+, produce output signal IF+; And
In response to said radio frequency be greater than or less than the judgement of the frequency of said local oscillator and also in response to said output signal I IF-and said output signal Q IF-, produce output signal IF-.
2. method according to claim 1, said method also comprises:
A said MOS multiplier and said the 2nd MOS multiplier are worked in dark triode region.
3. method according to claim 1, wherein said IF frequency is more than 1GHz.
4. method according to claim 1, said method also comprises:
Be provided at the above RF frequency of 5GHz.
5. method according to claim 1, wherein, the step of said generation output signal IF+ and IF-comprises makes the first lamped element blender and the second lamped element blender be connected to a said MOS multiplier and said the 2nd MOS multiplier with communication mode.
6. method according to claim 5, wherein, said lamped element blender comprises:
First capacitor, said first capacitor has first end of the input I that is connected to said lamped element blender;
Second capacitor, said second capacitor has first end of the input Q that is connected to said lamped element blender;
The 3rd capacitor, said the 3rd capacitor have first end of first input of two to one switches that are connected to said lamped element blender;
The 4th capacitor, said the 4th capacitor have first end of second input of said two to one switches that are connected to said lamped element blender;
First inductor, said first inductor are connected between said first input of said input I and said two to one switches;
Second inductor, said second inductor are connected between said second input of said input Q and said two to one switches;
The 3rd inductor, said the 3rd inductor are connected between said input I and the said input Q;
The 4th inductor, said the 4th inductor be connected said two to one switches said first the input and said two to one switches said second the input between; And
Said two to one switches are connected to the IF output of said lamped element blender; And can in response to said radio frequency greater than the said judgement of still doing less than the frequency of said local oscillator, between said second input of said first input of said two to one switches and said two to one switches, select.
7. method according to claim 6, said method also comprises:
When said radio frequency during, said two to one switches are switched to primary importance greater than said local oscillator frequencies.
8. method according to claim 6, said method also comprises:
When said radio frequency during, said two to one switches are switched to the second place greater than said local oscillator frequencies.
9. method according to claim 6; Wherein, At least one capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor can be by tuning providing variable capacitance, thus tuning said lamped element blender.
10. method according to claim 9, said method also comprises:
At least one capacitor in tuning said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor.
11. method according to claim 10, wherein, said 1 pico farad that is tuned at carries out in the scope of 6 pico farads.
12. method according to claim 6, wherein, at least one capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor is the switched capacitor bank that comprises a plurality of capacitors.
13. method according to claim 12, said method also comprises:
Switch the said switched capacitor bank of at least one capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor.
14. method according to claim 13, wherein, said 1 pico farad that switches in carries out in the scope of 6 pico farads.
15. method according to claim 6, wherein, each capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor has at the electric capacity of 1 pico farad in the scope of 6 pico farads.
16. method according to claim 6, wherein, each inductor in said first inductor, said second inductor, said the 3rd inductor and said the 4th inductor has at the inductance of 1 nanohenry in the scope of 6 nanohenrys.
17. method according to claim 1, wherein, said passive phase shifter is blue lucky coupler.
18. a passive image-reject mixer (IRM), said passive image-reject mixer comprises:
The one MOS multiplier; A said MOS multiplier can receive input signal RF+ and the RF-that forms the difference radio-frequency input signals and receive input signal LO+ and the LO-that forms difference local oscillator input signal, and can also export intermediate frequency differential output signal I IF+ and I IF-;
The 2nd MOS multiplier;
Passive phase shifter, said passive phase shifter are connected to said difference local oscillator input signal, and can output to said the 2nd MOS multiplier with behind 90 ° of the said difference local oscillator phase shifted input signals;
Said the 2nd MOS multiplier can receive the output of said difference radio-frequency input signals and said passive phase shifter, and can also export intermediate frequency (IF) differential output signal Q IF+ and Q IF-;
The first lamped element blender; The said first lamped element blender connects into the said output signal I IF+ of the said MOS multiplier of reception and the said output signal Q IF+ of said the 2nd MOS multiplier, and the said first lamped element blender can come output signal output IF+ greater than still being less than the frequency of the first difference local oscillator input signal in response to the frequency of said radio-frequency input signals; And
The second lamped element blender; The said second lamped element blender connects into the said output signal I IF-that receives a said MOS multiplier and the said output signal Q IF-of said the 2nd MOS multiplier, and the said second lamped element blender can be in response to the frequency of said radio-frequency input signals greater than the still output signal output IF-less than the frequency of the said first difference local oscillator input signal;
A said MOS multiplier and said the 2nd MOS multiplier are in dark triode region work.
19. passive IRM according to claim 18, wherein, said IRM operates under the intermediate frequency more than the 1GHz.
20. passive IRM according to claim 18, wherein, said IRM operates under the intermediate frequency more than the 5GHz.
21. passive IRM according to claim 18, wherein, each said lamped element blender comprises:
First capacitor, said first capacitor has first end of the input I that is connected to said lamped element blender;
Second capacitor, said second capacitor has first end of the input Q that is connected to said lamped element blender;
The 3rd capacitor, said the 3rd capacitor have first end of first input of two to one switches that are connected to said lamped element blender;
The 4th capacitor, said the 4th capacitor have first end of second input of said two to one switches that are connected to said lamped element blender;
First inductor, said first inductor are connected between said first input of said input I and said two to one switches;
Second inductor, said second inductor are connected between said second input of said input Q and said two to one switches;
The 3rd inductor, said the 3rd inductor are connected between said input I and the said input Q;
The 4th inductor, said the 4th inductor be connected said two to one switches said first the input and said two to one switches said second the input between; And
Said two to one switches are connected to the IF output of said lamped element blender, and can be in response to the frequency of said difference radio-frequency input signals greater than or come between said second input of said first input of said two to one switches and said two to one switches, to select less than the frequency of said difference local oscillator input signal.
22. passive IRM according to claim 21, wherein, at least one capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor can be by tuning to provide variable capacitance.
23. passive IRM according to claim 21, wherein, at least one capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor is the switched capacitor bank that comprises a plurality of capacitors.
24. passive IRM according to claim 21; Wherein, In each said lamped element blender, each capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor has at the electric capacity of 1 pico farad in the scope of 6 pico farads.
25. passive IRM according to claim 21; Wherein, In each said lamped element blender, each inductor in said first inductor, said second inductor, said the 3rd inductor and said the 4th inductor has at the inductance of 1 nanohenry in the scope of 6 nanohenrys.
26. passive IRM according to claim 18, wherein, in each said lamped element blender, each said passive phase shifter is blue lucky coupler.
27. passive IRM according to claim 18, wherein, said passive IRM utilizes the manufacturing of one of following technology: MOS technology, CMOS technology, BiCMOS technology.
28. a passive image-reject mixer (IRM) comprising:
The difference radio-frequency input signals, said difference radio-frequency input signals has input signal RF+ and input signal RF-;
The first difference local oscillator input signal, the said first difference local oscillator input signal has input signal LO+ and input signal LO-;
Second differential local oscillator signal, it is with respect to the said first difference local oscillator phase shifted input signal, and the said local second differential oscillator signal provides LO+ phase shift signalling and LO-phase shift signalling;
The first passive multiplier, the said first passive multiplier is in response to said input signal RF+ and said input signal RF-and said input signal LO+ and said input signal LO-output signal output I IF+ and IIF-;
The second passive multiplier, the said second passive multiplier is in response to said input signal RF+ and said input signal RF-and said LO+ phase shift signalling and said LO-phase shift signalling output signal output Q IF+ and output signal Q IF-;
First passive filter, said first passive filter are used for said output signal I IF+ and said output signal Q IF+ are carried out filtering and produce output signal IF+; And
Second passive filter, said second passive filter carries out filtering and produces output signal IF-said signal I IF-and said signal Q IF-.
29. passive IRM according to claim 28, said passive IRM also comprises passive phase shifter, and said passive phase shifter connects into and receives the said first difference local oscillator input signal and said second differential local oscillator signal is provided.
30. passive IRM according to claim 29, wherein, said passive phase shifter is blue lucky coupler.
31. passive IRM according to claim 28, wherein, said passive phase shifter makes said phase shifts 90 degree.
32. passive IRM according to claim 28; Wherein, The said first passive multiplier comprises four MOS transistors; The grid of two MOS transistors in wherein said four MOS transistors is connected to said signal LO+; The grid of other two MOS transistors in said four MOS transistors is connected to said signal LO-, and the wherein said second passive multiplier comprises four MOS transistors, and the grid that the grid of two MOS transistors in wherein said four MOS transistors is connected to other two MOS transistors in said LO+ phase shift signalling and said four MOS transistors is connected to said LO-phase shift signalling.
33. passive IRM according to claim 28, wherein, each said passive filter includes the lamped element blender.
34. passive IRM according to claim 33, wherein, each said lamped element blender includes:
First capacitor, said first capacitor has first end of the input I that is connected to said lamped element blender;
Second capacitor, said second capacitor has first end of the input Q that is connected to said lamped element blender;
The 3rd capacitor, said the 3rd capacitor have first end of first input of two to one switches that are connected to said lamped element blender;
The 4th capacitor, said the 4th capacitor have first end of second input of two to one switches that are connected to said lamped element blender;
First inductor, said first inductor are connected between said first input of said input I and two to one switches;
Second inductor, said second inductor are connected between said second input of said input Q and two to one switches;
The 3rd inductor, said the 3rd inductor are connected between said input I and the said input Q; And
The 4th inductor, said the 4th inductor be connected said two to one switches said first the input and said two to one switches said second the input between;
The output of each said two to one switch is connected to the corresponding IF output of said lamped element blender, and can be in response to the frequency of said radio-frequency input signals greater than or come between said second input of said first input of corresponding said two to one switches and corresponding said two to one switches, to select less than the frequency of the said first difference local oscillator input signal.
35. passive IRM according to claim 34; Wherein, In each said lamped element blender, at least one capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor can be tuning so that variable capacitance to be provided.
36. passive IRM according to claim 34; Wherein in each said lamped element blender, at least one capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor is the switched capacitor bank that comprises a plurality of capacitors.
37. passive IRM according to claim 34; Wherein, In each said lamped element blender, each capacitor in said first capacitor, said second capacitor, said the 3rd capacitor and said the 4th capacitor has at the electric capacity of 1 pico farad in the scope of 6 pico farads.
38. passive IRM according to claim 34; Wherein, In each said lamped element blender, each inductor in said first inductor, said second inductor, said the 3rd inductor and said the 4th inductor has at the inductance of 1 nanohenry in the scope of 6 nanohenrys.
39. passive IRM according to claim 28, wherein, the frequency of said output signal IF+ and said output signal IF-is at least 1GHz.
40. passive IRM according to claim 28, wherein, the frequency of said output signal IF+ and said output signal IF-is at least 5GHz.
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US21375609P | 2009-07-10 | 2009-07-10 | |
| US21375409P | 2009-07-10 | 2009-07-10 | |
| US61/213,754 | 2009-07-10 | ||
| US61/213,756 | 2009-07-10 | ||
| US12/828,004 US8275338B2 (en) | 2009-07-10 | 2010-06-30 | Passive high frequency image reject mixer |
| US12/828,004 | 2010-06-30 | ||
| US12/832,964 | 2010-07-08 | ||
| US12/832,964 US8331896B2 (en) | 2009-07-10 | 2010-07-08 | Method of operation of a passive high-frequency image reject mixer |
| PCT/IB2010/001704 WO2011004256A1 (en) | 2009-07-10 | 2010-07-09 | Method of operation of a passive high-frequency image reject mixer |
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| CN102484451A true CN102484451A (en) | 2012-05-30 |
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| CN2010800398771A Pending CN102484451A (en) | 2009-07-10 | 2010-07-09 | Method Of Operation Of A Passive High-Frequency Image Reject Mixer |
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| WO (1) | WO2011004256A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112332877A (en) * | 2019-08-05 | 2021-02-05 | 通用汽车环球科技运作有限责任公司 | Receiver apparatus |
| CN113612465A (en) * | 2021-07-12 | 2021-11-05 | 南京理工大学 | High-frequency broadband bidirectional high-precision passive phase shifter |
| CN114268329A (en) * | 2021-12-14 | 2022-04-01 | 天津大学 | Dual-frequency high-linearity demodulator |
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| WO2005091493A1 (en) * | 2004-03-12 | 2005-09-29 | Rf Magic, Inc. | Harmonic suppression mixer and tuner |
| US20080014896A1 (en) * | 2006-07-11 | 2008-01-17 | Wei Zhuo | Systems, methods, and apparatus for frequency conversion |
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| US6909886B2 (en) * | 2002-08-30 | 2005-06-21 | Microtune ( Texas), L.P. | Current driven polyphase filters and method of operation |
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- 2010-07-09 WO PCT/IB2010/001704 patent/WO2011004256A1/en active Application Filing
- 2010-07-09 CN CN2010800398771A patent/CN102484451A/en active Pending
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| CN86108884A (en) * | 1985-12-30 | 1987-06-24 | 格特电信公司 | Be specially adapted to the monolateral band harmmonic constant of high frequency reception and transmitting system |
| US6029059A (en) * | 1997-06-30 | 2000-02-22 | Lucent Technologies, Inc. | Quadrature mixer method and apparatus |
| US20010027095A1 (en) * | 2000-03-30 | 2001-10-04 | Nec Corporation | Image rejection mixer |
| WO2005091493A1 (en) * | 2004-03-12 | 2005-09-29 | Rf Magic, Inc. | Harmonic suppression mixer and tuner |
| US20080014896A1 (en) * | 2006-07-11 | 2008-01-17 | Wei Zhuo | Systems, methods, and apparatus for frequency conversion |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112332877A (en) * | 2019-08-05 | 2021-02-05 | 通用汽车环球科技运作有限责任公司 | Receiver apparatus |
| CN113612465A (en) * | 2021-07-12 | 2021-11-05 | 南京理工大学 | High-frequency broadband bidirectional high-precision passive phase shifter |
| CN114268329A (en) * | 2021-12-14 | 2022-04-01 | 天津大学 | Dual-frequency high-linearity demodulator |
| CN114268329B (en) * | 2021-12-14 | 2023-09-19 | 天津大学 | Dual-frequency high-linearity demodulator |
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| WO2011004256A1 (en) | 2011-01-13 |
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