CN206585529U - Millimeter wave broadband voltage controlled oscillator - Google Patents
Millimeter wave broadband voltage controlled oscillator Download PDFInfo
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- CN206585529U CN206585529U CN201720273618.4U CN201720273618U CN206585529U CN 206585529 U CN206585529 U CN 206585529U CN 201720273618 U CN201720273618 U CN 201720273618U CN 206585529 U CN206585529 U CN 206585529U
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- oscillator
- voltage controlled
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Abstract
A kind of millimeter wave broadband voltage controlled oscillator, is related to technical field of electronic devices, and what is solved is that existing oscillator fm linearity is good and the wide technical problem that can not be had concurrently of frequency modulation band.The oscillator includes LC resonant tanks, the first transistor, second transistor, and the LC resonant tanks include the first resonant inductance, the second resonant inductance and at least one variable capacitance group, and each variable capacitance group is made up of two variable capacitances；The oscillator is provided with the first output end, the second output end, main control end and at least one secondary control end, and first output end concatenates the first resonant inductance, the second resonant inductance to the second output end；The first transistor, second transistor formation cross-couplings；Each secondary control end is used to control each variable capacitance group respectively.The oscillator that the utility model is provided, fm linearity is good, and frequency modulation band is wide.
Description
Technical field
The utility model is related to electronics technologies, more particularly to a kind of technology of millimeter wave broadband voltage controlled oscillator.
Background technology
Because millimeter wave frequency band has higher available bandwidth, while its detection accuracy is also higher, therefore millimeter wave chip
In many-sided extensive application such as radio communication, radar, guidance, remote sensing technology, radio astronomy and electronic countermeasure.In recent years
Come, with opening successively for millimeter wave frequency band, millimeter wave chip becomes focus.The wherein tune of millimeter wave broadband voltage controlled oscillator
The frequency linearity and modulating bandwidth are used as the performance that system is determined on key index very great Cheng.
As shown in Fig. 2 existing voltage controlled oscillator all in N-type transistor M21, M22, integration slice resonant inductance L21,
L21, variable capacitance Cv21, Cv22 composition.Variable capacitance Cv21, Cv22 physical arrangement are generally integrated MOS structure or collection
Into diode structure, transistor M21, M22 source links together and is connected to ground potential GND, their drain terminal point
Two output end vos ut21, Vout22 of voltage controlled oscillator are not connected to, and transistor M21 grid end is connected to VCO
Second output end vo ut22 of device, transistor M22 grid end are connected to the first output end vo ut21 of voltage controlled oscillator, are formed and handed over
Fork coupling, variable capacitance Cv21 one end is connected to the first output end vo ut21 of voltage controlled oscillator, and the other end is connected to voltage-controlled
The control voltage end Vctrl of oscillator, variable capacitance Cv22 one end are connected to the second output end vo ut22 of voltage controlled oscillator,
The other end is connected to the control voltage end Vctrl of voltage controlled oscillator, resonant inductance L21, L21, variable capacitance Cv21, Cv22 composition
LC resonant tanks, the magnitude of voltage of the control voltage end Vctrl by changing voltage controlled oscillator, it is possible to change variable capacitance
Cv21, Cv22 capacitance, and then change the frequency produced by LC resonant tanks, this is also the groundwork original of voltage controlled oscillator
Reason.
In traditional voltage controlled oscillator, variable capacitance Cv21, Cv22 determine its electric capacity by the non-linear of physical arrangement
Value can not linearly change with the linear change of the value of control voltage, so as to cause the frequency adjustment of voltage controlled oscillator can not
Linearly change with the linear change of the value of control voltage.So as to cause the wide then fm linearity of frequency modulation band poor；And in order to
Ensure preferable fm linearity, then frequency modulation band width.Voltage controlled oscillator and broadband voltage controlled oscillation that i.e. fm linearity optimizes
Device can not get both.
Utility model content
For defect present in above-mentioned prior art, technical problem to be solved in the utility model is to provide a kind of tune
The frequency linearity is good, and the wide millimeter wave broadband voltage controlled oscillator of frequency modulation band.
In order to solve the above-mentioned technical problem, a kind of millimeter wave broadband voltage controlled oscillator provided by the utility model, including
LC resonant tanks, the first transistor, second transistor, the LC resonant tanks include the first resonant inductance, the second resonant inductance,
The oscillator is provided with the first output end, the second output end, and first output end concatenates the first resonant inductance, the second resonant inductance
To the second output end；The first transistor, the source of second transistor are coupled with ground, and the drain terminal of the first transistor is connected to the
One output end, the grid end of the first transistor is connected to the second output end, and the drain terminal of second transistor is connected to the second output end, and second is brilliant
The grid end of body pipe is connected to the first output end, forms cross-couplings；
It is characterized in that：The LC resonant tanks also include at least one variable capacitance group, each variable capacitance group by
Two variable capacitances are constituted；
The oscillator is provided with main control end, and with least one one-to-one secondary control end of each variable capacitance group；
In each variable capacitance group, the first end of two variable capacitances is coupled with main control end, and one of them can power transformation
The electric capacity of the second end one held is connected to the first output end, and the electric capacity of the second end one of another variable capacitance is connected to the second output
End, the second end of two variable capacitances is coupled with corresponding secondary control end.
The millimeter wave broadband voltage controlled oscillator that the utility model is provided, can optimize each variable by each secondary control end
The capacitance of electric capacity with main control end voltage value changes when the linearity, and the change of the capacitance of each variable capacitance can be increased
Change scope, so as to while possessing excellent fm linearity, be also equipped with wider modulating bandwidth.
Brief description of the drawings
Fig. 1 is the circuit diagram of the millimeter wave broadband voltage controlled oscillator of the utility model embodiment；
Fig. 2 is the circuit diagram of existing voltage controlled oscillator.
Embodiment
Below in conjunction with brief description of the drawings embodiment of the present utility model is described in further detail, but the present embodiment and without
It is every to use similar structure of the present utility model and its similar change in limitation the utility model, the utility model all should be included in
Protection domain, the pause mark in the utility model represents the relation of sum.
As shown in figure 1, a kind of millimeter wave broadband voltage controlled oscillator that the utility model embodiment is provided, including LC resonance
Loop, the first transistor M1, second transistor M2, the LC resonant tanks include the first resonant inductance L1, the second resonant inductance
L2, the oscillator is provided with the first output end vo 1, the second output end vo 2, and first output end vo 1 concatenates the first resonant inductance
L1, the second resonant inductance L2 are to the second output end vo 2；The first transistor M1, second transistor M2 source are coupled with
Ground GND, the first transistor M1 drain terminal are connected to the first output end vo 1, and the first transistor M1 grid end is connected to the second output end
Vo2, second transistor M2 drain terminal are connected to the second output end vo 2, and second transistor M2 grid end is connected to the first output end vo 2,
Form cross-couplings；
It is characterized in that：The LC resonant tanks also include three variable capacitance groups, and each variable capacitance group is by two
Variable capacitance is constituted；
Wherein, first variable capacitance group is made up of the first variable capacitance C1, the second variable capacitance C2, and second can power transformation
Appearance group is made up of the 3rd variable capacitance C3, the 4th variable capacitance C4, and the 3rd variable capacitance group is by the 5th variable capacitance C5, the 6th
Variable capacitance C6 is constituted；
The oscillator be provided with main control end V4, and with the one-to-one three secondary control ends of three variable capacitance groups, this three
Individual secondary control end is respectively first time control end V1, second control end V2, third time control end V3；
In each variable capacitance group, the first end of two variable capacitances is coupled with main control end V4, and one of them is variable
The electric capacity of the second end one of electric capacity is connected to the first output end vo 1, and the electric capacity of the second end one of another variable capacitance is connected to second
Output end vo 2, the second end of two variable capacitances is coupled with corresponding secondary control end；
Wherein, the second end of two variable capacitances C1, C2 in first variable capacitance group are coupled with the first secondary control
V1 is held, the second end of two variable capacitances C3, C4 in second variable capacitance group is coupled with second of control end V2, the 3rd
The second end of two variable capacitances C5, C6 in individual variable capacitance group are coupled with third time control end V3.
The operation principle of the utility model embodiment is as follows：
Each variable capacitance C1, C2, C3, C4, C5, C6 capacitance can be with the changes of main control end V4 magnitude of voltage
Change, by changing main control end V4 magnitude of voltage, can make the capacitance of each variable capacitance change, and then to adjust
The frequency of oscillation of voltage controlled oscillator；
Different magnitudes of voltage are assigned to first time control end V1, second control end V2, third time control end V3, can be with excellent
Change the capacitance of each variable capacitance with main control end V4 voltage value changes when the linearity, and each variable capacitance can be increased
Capacitance excursion.
In the utility model embodiment, the variable capacitance can use integrated MOS structure varactor, two integrated poles
A kind of realization in tubular construction, it would however also be possible to employ integrated MOS structure varactor and integrated diode structure pass through string and square
Formula combination is realized.
Claims (1)
1. a kind of millimeter wave broadband voltage controlled oscillator, including LC resonant tanks, the first transistor, second transistor, the LC are humorous
Loop shake including the first resonant inductance, the second resonant inductance, the oscillator is provided with the first output end, the second output end, described the
One output end concatenates the first resonant inductance, the second resonant inductance to the second output end；The first transistor, second transistor
Source is coupled with ground, and the drain terminal of the first transistor is connected to the first output end, and the grid end of the first transistor is connected to the second output end,
The drain terminal of second transistor is connected to the second output end, and the grid end of second transistor is connected to the first output end, forms cross-couplings；
It is characterized in that：The LC resonant tanks also include at least one variable capacitance group, and each variable capacitance group is by two
Variable capacitance is constituted；
The oscillator is provided with main control end, and with least one one-to-one secondary control end of each variable capacitance group；
In each variable capacitance group, the first end of two variable capacitances is coupled with main control end, one of variable capacitance
The electric capacity of second end one is connected to the first output end, and the electric capacity of the second end one of another variable capacitance is connected to the second output end, two
Second end of individual variable capacitance is coupled with corresponding secondary control end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720273618.4U CN206585529U (en) | 2017-03-21 | 2017-03-21 | Millimeter wave broadband voltage controlled oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720273618.4U CN206585529U (en) | 2017-03-21 | 2017-03-21 | Millimeter wave broadband voltage controlled oscillator |
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| Publication Number | Publication Date |
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| CN206585529U true CN206585529U (en) | 2017-10-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720273618.4U Active CN206585529U (en) | 2017-03-21 | 2017-03-21 | Millimeter wave broadband voltage controlled oscillator |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803745A (en) * | 2017-03-21 | 2017-06-06 | 麦堆微电子技术（上海）有限公司 | A kind of millimeter wave broadband voltage controlled oscillator |
| CN111464179A (en) * | 2020-04-28 | 2020-07-28 | 恒玄科技(上海)股份有限公司 | Resonant frequency control circuit |
-
2017
- 2017-03-21 CN CN201720273618.4U patent/CN206585529U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106803745A (en) * | 2017-03-21 | 2017-06-06 | 麦堆微电子技术（上海）有限公司 | A kind of millimeter wave broadband voltage controlled oscillator |
| CN111464179A (en) * | 2020-04-28 | 2020-07-28 | 恒玄科技(上海)股份有限公司 | Resonant frequency control circuit |
| CN111464179B (en) * | 2020-04-28 | 2024-03-01 | 恒玄科技(上海)股份有限公司 | Resonant frequency control circuit |
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