CN102868367A - Double balanced type frequency tripler - Google Patents
Double balanced type frequency tripler Download PDFInfo
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- CN102868367A CN102868367A CN2012103989191A CN201210398919A CN102868367A CN 102868367 A CN102868367 A CN 102868367A CN 2012103989191 A CN2012103989191 A CN 2012103989191A CN 201210398919 A CN201210398919 A CN 201210398919A CN 102868367 A CN102868367 A CN 102868367A
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Abstract
The invention provides a double balanced type frequency tripler which at least comprises a first 90 degree input electrical bridge, two second 90 degree input electrical bridges, four frequency multiplier circuits, two negative 90 degree output electrical bridges and a combiner. The first 90 degree input electrical bridge works in a fundamental wave frequency band, the second 90 degree input electrical bridges both work in the fundamental wave frequency band and are connected with an output end of the first 90 degree input electrical bridge respectively, the frequency multiplier circuits are connected with an output end of one second 90 degree input electrical bridge respectively, the negative 90 degree output electrical bridges both work in triple harmonic frequency bands and are connected with output ends of two frequency multiplier circuits, and the combiner is connected with output ends of the two negative 90 degree output electrical bridges. The double balanced type frequency tripler has the advantages of being simple in structure, easy to integrate and low in requirements for process capability.
Description
Technical field
The present invention relates to technical field of micro communication, particularly relate to a kind of double-balance frequency tripler.
Background technology
Frequency multiplier is to realize frequency multiplication, on the harmonic frequency of needs, makes the fundamental frequency frequency multiplication of input it export the device of the harmonic power that needs.The introducing of frequency multiplier can effectively reduce local oscillator (LO) frequency, this is concerning millimeter-wave systems, the design needs of extremely high frequency local oscillator have been alleviated, the extremely high frequency local oscillator is very harsh to technological requirement, the frequency of occurrences is unstable easily, the linearity is low, the chip consistency is low and it is directly phase-locked to be difficult to, so frequency multiplier can improve the stability of whole system and reduce cost.
The millimere-wave band frequency tripler mainly adopts Schottky diode or heterogeneous joint potential barrier varactor as nonlinear device at present, waveguiding structure and substrate integration wave-guide (SIW) structure are adopted in the millimeter wave frequency tripler of high band in a large number simultaneously, and purpose is to utilize the transmission characteristic of wave-guide cavity wave to realize that first-harmonic and second harmonic in the triple-frequency harmonics well suppress ability.But this non-planar surface process structure will greatly affect miniaturization, high integration and the cost degradation of millimeter-wave systems.
At present based on the frequency tripler on the planar technique still can fine solution each harmonic (comprising first-harmonic) except triple-frequency harmonics the inhibition problem, this directly affects frequency spectrum purity and three shg efficiencies of whole system, need extra complex match minor matters circuit or filter network to compensate, this has increased circuit design difficulty and cost.In recent years, single balanced type frequency tripler has obtained large quantity research because of its symmetrical structure, easy method for designing and succinct chip area, and its main topological structure has two kinds, shown in Fig. 1 a and 1b.
Single balanced type frequency tripler is realized by a pair of 180 °/180 ° or 90 °/90 ° electric bridges and a pair of unit/terminal frequency multiplier circuit (XN).In general, the phase factor of input bridge (phase difference output a °) and output electric bridge (phase difference output b °) has determined the output of N subharmonic.When satisfying:
N×a
1+b×N≈360°×i
The N rd harmonic signal will be in the linear stack of output.Wherein N is frequency, and i is integer.According to such theory analysis, in the output signal of 180 °/180 ° of electric bridges, the even-order harmonic component will be cancelled out each other, and odd harmonic component (comprising first-harmonic and triple-frequency harmonics) will be in the linear stack of output; In the output signal of 90 °/90 ° of electric bridges, fundametal compoment will be cancelled out each other, and second harmonic component will be vector superposed at output, and the third-harmonic component that needs is with linear superposition.This shows, but any in two kinds of topological structures can not both realize all that the output of first-harmonic suppressed also to realize that the output of even-order harmonic suppresses simultaneously, still need external coupling minor matters circuit or filter, this will affect the matching properties of non-linear unit, reduce the shg efficiency of triple-frequency harmonics and the power of output triple-frequency harmonics.
Summary of the invention
The shortcoming of prior art the object of the present invention is to provide a kind of double-balance frequency tripler that good each harmonic suppresses ability that has in view of the above.
Reach for achieving the above object other relevant purposes, the invention provides a kind of double-balance frequency tripler, it comprises at least:
90 ° of first input bridge, it is operated in the first-harmonic frequency range;
Connect respectively two 90 ° of second input bridges of an output of described 90 ° of first input bridge, all be operated in the first-harmonic frequency range;
4 frequency multiplier circuits that connect respectively an output of 90 ° of second input bridges;
Two-90 ° output electric bridges that are connected with two frequency multiplier circuit outputs respectively all are operated in the triple-frequency harmonics frequency range; And
The mixer that connects two-90 ° output electric bridge outputs.
Preferably, described 90 ° of first input bridge is identical with described 90 ° of second input bridge structure.
Preferably, described 90 ° of first input bridge adopts 90 ° 3dB input bridge; More preferably, described 90 ° of first input bridge comprises 3dB Lange Coupler.
Preferably, frequency multiplier circuit adopts the MOSFET single-tube circuit that is operated in C class power amplifier zone.
Preferably, described-90 ° of output electric bridges adopt-90 ° 3dB output electric bridge; More preferably, described-90 ° output electric bridges comprise 3dB Lange Coupler.
Preferably, described mixer comprises Wilkinson power divider.
As mentioned above, the advantage of double-balance frequency tripler of the present invention comprises: all components and parts all can be realized by planar circuit technique, and are simple in structure, are easy to integrated; In addition, do not needing to realize preferably harmonic responses under the external filter.
Description of drawings
Fig. 1 a and 1b are shown as single balanced type frequency tripler topological structure schematic diagram of prior art.
Fig. 2 is shown as double-balance frequency tripler topological structure schematic diagram of the present invention.
Fig. 3 is shown as 90 ° 3dB input bridge structural representation of double-balance frequency tripler of the present invention.
Fig. 4 is shown as the frequency multiplier circuit structural representation of double-balance frequency tripler of the present invention.
Fig. 5 is shown as the 3dB output bridge structure schematic diagram of double-balance frequency tripler of the present invention-90 °.
Fig. 6 is shown as the combiner structure schematic diagram of double-balance frequency tripler of the present invention.
Embodiment
Below by particular specific embodiment explanation embodiments of the present invention, person skilled in the art scholar can understand other advantages of the present invention and effect easily by the disclosed content of this specification.
See also Fig. 2 to Fig. 6.Notice, the appended graphic structure that illustrates of this specification, ratio, size etc., equal contents in order to cooperate specification to disclose only, understand and reading for person skilled in the art scholar, be not to limit the enforceable qualifications of the present invention, so technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, not affecting under the effect that the present invention can produce and the purpose that can reach, all should still drop on disclosed technology contents and get in the scope that can contain.Simultaneously, quote in this specification as " on ", D score, " left side ", " right side ", " centre " reach the term of " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, under without essence change technology contents, when also being considered as the enforceable category of the present invention.
As shown in Figure 2, the invention provides a kind of double-balance frequency tripler.This double-balance frequency tripler comprises at least: 90 ° of electric bridges of three 3dB inputs, be operated in the first-harmonic frequency range, and be respectively bridge 1, bridge 2 and bridge 3; The frequency multiplier circuit of four symmetries;-90 ° of electric bridges of two 3dB output are operated in the triple-frequency harmonics frequency range, are respectively bridge 4 and bridge 5; And the mixer of last output, be operated in the triple-frequency harmonics frequency range.
The input of this double-balance frequency tripler is the input of bridge 1; The input of 0 ° of output termination bridge 2 of bridge 1; The input of 90 ° of output termination bridges 3 of bridge 1; 0 ° of output of bridge 2 links to each other with the input of frequency multiplier circuit 1, frequency multiplier circuit 2 respectively with 90 ° of outputs; 0 ° of output of bridge 3 links to each other with the input of frequency multiplier circuit 3, frequency multiplier circuit 4 respectively with 90 ° of outputs; The output of frequency multiplier circuit 1, frequency multiplier circuit 2 links to each other with 0 ° of input with-90 ° of inputs of bridge 4 respectively; The output of frequency multiplier circuit 3, frequency multiplier circuit 4 links to each other with 0 ° of input with-90 ° of inputs of bridge 5 respectively; The output of bridge 4 and bridge 5 links to each other with two inputs of mixer respectively, and the output of mixer is the output of frequency tripler.Adopt double-balance frequency tripler of the present invention can realize that the output of higher first-harmonic and even-order harmonic suppresses, rejection ratio is less with the variation of process deviation simultaneously, and whole frequency tripler has miniaturization, easy of integrationization and cost degradation.
The course of work of the present invention is: radiofrequency signal enters the double-balance frequency tripler by the input of bridge 1; Output at bridge 1 is divided into 0 ° of phase place of constant amplitude and the two paths of signals of 90 ° of phase places; The signal of 0 ° of phase place enters the input of bridge 2, and the signal of 90 ° of phase places enters the input of bridge 3; At the output of bridge 2, the signal of 0 ° of phase place is divided into 0 ° of phase place of constant amplitude and the two paths of signals of 90 ° of phase places; At the output of bridge 3, the signal of 90 ° of phase places is divided into 90 ° of phase places of constant amplitude and the two paths of signals of 180 ° of phase places; 0 ° of phase signal of bridge 2 outputs enters frequency multiplier circuit 1; 90 ° of phase signals of bridge 2 outputs enter frequency multiplier circuit 2; 90 ° of phase signals of bridge 3 outputs enter frequency multiplier circuit 3; 180 ° of phase signals of bridge 3 outputs enter frequency multiplier circuit 4; Nonlinear change through frequency multiplier circuit, the output of frequency multiplier circuit 1 output relative phase is respectively first-harmonic/second harmonic/harmonic signal of 0 °/0 °/0 °, the output of frequency multiplier circuit 2 output relative phase is respectively first-harmonic/second harmonic/harmonic signal of 90 °/180 °/270 °, the output of frequency multiplier circuit 3 output relative phase is respectively first-harmonic/second harmonic/harmonic signal of 90 °/180 °/270 °, and the output output relative phase of frequency multiplier circuit 4 is respectively first-harmonic/second harmonic/harmonic signal of 180 °/0 °/180 °; First-harmonic/the second harmonic of frequency multiplier circuit 1 output/harmonic signal is respectively 270 °/270 °/270 ° at the output relative phase of bridge 4, first-harmonic/the second harmonic of frequency multiplier circuit 2 outputs/harmonic signal is respectively 90 °/180 °/270 ° at the output relative phase of bridge 4, like this, output fundamental signal at bridge 4 is cancelled out each other, second harmonic is vector superposed, relative phase is 225 °, the triple-frequency harmonics linear superposition, and relative phase is 270 °; First-harmonic/the second harmonic of frequency multiplier circuit 3 outputs/harmonic signal is respectively 90 °/180 °/270 ° at the output relative phase of bridge 5, first-harmonic/the second harmonic of frequency multiplier circuit 4 outputs/harmonic signal is respectively 180 °/0 °/180 ° at the output relative phase of bridge 5, like this, output fundamental signal at bridge 4 is cancelled out each other, second harmonic is vector superposed, relative phase is 45 °, the triple-frequency harmonics linear superposition, and relative phase is 180 °; The reverse second harmonic signal of constant amplitude disappears mutually in the output linearity of mixer 1, the harmonic signal of constant amplitude quadrature is in the output vector addition of mixer 1, obtained the third-harmonic component that needs in radio-frequency (RF) output end like this, simultaneously first-harmonic and second harmonic component radio-frequency (RF) output end all symmetry disappear mutually, rejection ratio is improved; Because the working frequency range of bridge 4 and bridge 5 is at triple-frequency harmonics, at the input of bridge 4 and bridge 5, most of component of first-harmonic and second harmonic all goes along with reflection comes back in the frequency multiplier circuit, has improved the efficient of triple-frequency harmonics output.
The below will illustrate the realization of the device that the double-balance frequency tripler comprises:
1) 90 of the first-harmonic working frequency range ° 3dB input bridge
Because Lange Coupler has less area and relatively wide bandwidth of operation, select Lange Coupler as 90 ° 3dB input bridge of first-harmonic working frequency range, as shown in Figure 3, wherein 11 is input, 12 is 0 ° of coupled end, 13 is 90 ° of coupled end, and 14 is isolation end.
2) frequency multiplier circuit
Frequency multiplier circuit adopts the MOSFET single-tube circuit that is operated in C class power amplifier zone in this example, it can produce each time high-order harmonic wave component, as shown in Figure 4, wherein match circuit 1 and match circuit 2 are respectively the outfit of input and output, to obtain larger harmonic output power and delivery efficiency.
3)-90 of the triple-frequency harmonics working frequency range ° 3dB output electric bridge
Because Lange Coupler has less area and relatively wide bandwidth of operation, select Lange Coupler as-90 ° 3dB output electric bridge of first-harmonic working frequency range, as shown in Figure 5, wherein 21 is output, 22 is 0 ° of couple input, 23 is-90 ° of couple input, and 24 is isolation end.
4) triple-frequency harmonics working frequency range mixer
Adopt Wilkinson power divider as the mixer in this example, specifically as shown in Figure 6, wherein In1, In2 are respectively input, and Out is the mixer output.
In sum, the double-balance frequency tripler that the present invention proposes, its advantage compared with prior art is:
1. among the present invention, utilize bridge 4 and bridge 5 to have larger echo reflection coefficient in the first-harmonic frequency range, realized that first-harmonic is reflected back the recycling of frequency multiplier circuit, improved the efficient of triple-frequency harmonics output; Utilize the characteristics of double-balance, fundametal compoment the output port of bridge 4 and bridge 5 respectively linearity disappear mutually, realized the inhibition of fundametal compoment at output, simultaneously owing to adopted two balanced structures to reduce the impact of processes deviation on the inhibition of fundametal compoment.
2. among the present invention, utilize bridge 4 and bridge 5 to have larger echo reflection coefficient in the first-harmonic frequency range, realized that second harmonic is reflected back the recycling of frequency multiplier circuit, improved the efficient of triple-frequency harmonics output; Utilize the characteristics of double-balance, second harmonic component is in the reverse constant amplitude of output port of bridge 4 and bridge 5, and the output port linearity at mixer disappears mutually at last; Not adopting under sheet outer filter or the extra match circuit, realized simultaneously the inhibition of first-harmonic and second harmonic.
3. among the present invention, all components and parts all can be realized by planar circuit technique, do not need extra waveguide or SIW structure to come the low frequency components such as Fundamental wave suppression or second harmonic, have realized miniaturization, easy of integrationization and the cost degradation of circuit.
So the present invention has effectively overcome various shortcoming of the prior art and the tool high industrial utilization.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not is used for restriction the present invention.Any person skilled in the art scholar all can be under spirit of the present invention and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under disclosed spirit and the technological thought, must be contained by claim of the present invention.
Claims (8)
1. a double-balance frequency tripler is characterized in that, described double-balance frequency tripler comprises at least:
90 ° of first input bridge, it is operated in the first-harmonic frequency range;
Connect respectively two 90 ° of second input bridges of an output of described 90 ° of first input bridge, all be operated in the first-harmonic frequency range;
4 frequency multiplier circuits that connect respectively an output of 90 ° of second input bridges;
Two-90 ° output electric bridges that are connected with two frequency multiplier circuit outputs respectively all are operated in the triple-frequency harmonics frequency range; And
The mixer that connects two-90 ° output electric bridge outputs.
2. double-balance frequency tripler according to claim 1, it is characterized in that: described 90 ° of first input bridge is identical with described 90 ° of second input bridge structure.
3. double-balance frequency tripler according to claim 1 and 2 is characterized in that: the 3dB input bridge that described 90 ° of first input bridge employing is 90 °.
4. double-balance frequency tripler according to claim 3, it is characterized in that: described 90 ° of first input bridge comprises 3dB Lange Coupler.
5. double-balance frequency tripler according to claim 1 is characterized in that: frequency multiplier circuit adopts the MOSFET single-tube circuit that is operated in C class power amplifier zone.
6. double-balance frequency tripler according to claim 1 is characterized in that: the 3dB output electric bridge that the employing of described-90 ° of output electric bridges is-90 °.
7. double-balance frequency tripler according to claim 6 is characterized in that: described-90 ° of output electric bridges comprise 3dB Lange Coupler.
8. double-balance frequency tripler according to claim 1, it is characterized in that: described mixer comprises Wilkinson power divider.
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| CN201210398919.1A CN102868367B (en) | 2012-10-18 | 2012-10-18 | Double balanced type frequency tripler |
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| CN201210398919.1A CN102868367B (en) | 2012-10-18 | 2012-10-18 | Double balanced type frequency tripler |
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| CN102868367B CN102868367B (en) | 2015-02-18 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739922A (en) * | 2019-11-10 | 2020-01-31 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | ultra-wideband solid-state power amplifier synthesis circuit |
| CN111969955A (en) * | 2020-08-27 | 2020-11-20 | 中电科仪器仪表有限公司 | 0.5-0.75 THz broadband efficient solid-state source based on waveguide transmission line and working method thereof |
| CN111987993A (en) * | 2020-08-27 | 2020-11-24 | 中电科仪器仪表有限公司 | Broadband high-harmonic suppression terahertz three-balanced frequency doubler and method |
| CN112615590A (en) * | 2020-12-18 | 2021-04-06 | 电子科技大学 | TSM-PI frequency tripler based on double-balanced frequency mixing |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392014A (en) * | 1992-03-02 | 1995-02-21 | Fujitsu Limited | Frequency multiplier |
| JP2003264430A (en) * | 2002-03-08 | 2003-09-19 | Murata Mfg Co Ltd | Frequency four-multiplying method, frequency four- multiplying device and electronic apparatus using the same |
| CN102347729A (en) * | 2011-07-29 | 2012-02-08 | 西安空间无线电技术研究所 | Balanced type frequency tripler of substrate integrated waveguide (SIW) |
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2012
- 2012-10-18 CN CN201210398919.1A patent/CN102868367B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5392014A (en) * | 1992-03-02 | 1995-02-21 | Fujitsu Limited | Frequency multiplier |
| JP2003264430A (en) * | 2002-03-08 | 2003-09-19 | Murata Mfg Co Ltd | Frequency four-multiplying method, frequency four- multiplying device and electronic apparatus using the same |
| CN102347729A (en) * | 2011-07-29 | 2012-02-08 | 西安空间无线电技术研究所 | Balanced type frequency tripler of substrate integrated waveguide (SIW) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110739922A (en) * | 2019-11-10 | 2020-01-31 | 扬州船用电子仪器研究所(中国船舶重工集团公司第七二三研究所) | ultra-wideband solid-state power amplifier synthesis circuit |
| CN111969955A (en) * | 2020-08-27 | 2020-11-20 | 中电科仪器仪表有限公司 | 0.5-0.75 THz broadband efficient solid-state source based on waveguide transmission line and working method thereof |
| CN111987993A (en) * | 2020-08-27 | 2020-11-24 | 中电科仪器仪表有限公司 | Broadband high-harmonic suppression terahertz three-balanced frequency doubler and method |
| CN112615590A (en) * | 2020-12-18 | 2021-04-06 | 电子科技大学 | TSM-PI frequency tripler based on double-balanced frequency mixing |
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| CN102868367B (en) | 2015-02-18 |
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