Millimeter wave broadband voltage-controlled oscillator
A voltage-controlled oscillator and millimeter wave technology, applied in power oscillators, electrical components, etc., can solve the problems of narrow FM bandwidth, poor FM linearity, and linear changes, and achieve wide FM bandwidth, excellent FM linearity, and increased frequency. The effect of wide variation
Pending Publication Date: 2017-06-06
麦堆微电子技术(上海)有限公司
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Problems solved by technology
[0004] In the traditional voltage-controlled oscillator, the variable capacitors Cv21 and Cv22 are determined by the nonlinearity of the physical structure, and their capacitance values cannot be changed linearly with the linear change of the control voltage value, resulting in the frequency adjustment of the voltage-controlled oscillator. Does not change linearly with a linear change in the value of the control voltage
As a result, if the FM bandwidth is wide, the FM linearity will be poor; and in order to ensure better FM linearity, the FM bandwidth will be narrow
That is, VCOs with optimized FM linearity and broadband VCOs cannot have both
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[0013] The embodiments of the present invention are described in further detail below in conjunction with the accompanying drawings, but the present embodiments are not intended to limit the present invention. All similar structures and similar changes of the present invention should be included in the scope of protection of the present invention. The commas in all indicate the relationship between and.
[0014] Such as figure 1 As shown, a millimeter-wave broadband voltage-controlled oscillator provided by an embodiment of the present invention includes an LC resonant tank, a first transistor M1, and a second transistor M2. The LC resonant tank includes a first resonant inductor L1, a second resonant An inductor L2, the oscillator is provided with a first output terminal Vo1 and a second output terminal Vo2, the first output terminal Vo1 is connected in series with the first resonant inductor L1, the second resonant inductor L2 to the second output terminal Vo2; the first ou...
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The invention provides a millimeter wave broadband voltage-controlled oscillator, relates to the technical field of electronic devices, and solves the technical problem that good frequency modulation linearity and wide frequency modulation bandwidth of the conventional oscillator cannot be simultaneously achieved. The oscillator comprises a LC resonance circuit, a first transistor, and a second transistor, the LC resonance circuit comprises a first resonance inductor, a second resonance inductor, and at least a variable capacitor set, each variable capacitor set is formed by two variable capacitors, the oscillator is provided with a first output terminal, a second output terminal, a primary control terminal, and at least a secondary control terminal, the first output terminal is connected to the second output terminal through series connection of the first resonance inductor and the second resonance inductor, the first transistor and the second transistor form crossed coupling, and each secondary control terminal is used for controlling each variable capacitor set. According to the oscillator, the frequency modulation linearity is good, and the frequency modulation bandwidth is wide.
Description
technical field [0001] The invention relates to electronic device technology, in particular to the technology of a millimeter-wave broadband voltage-controlled oscillator. Background technique [0002] Because the millimeter-wave frequency band has a high available bandwidth and high detection accuracy, millimeter-wave chips are widely used in wireless communication, radar, guidance, remote sensing technology, radio astronomy, and electronic countermeasures. In recent years, with the successive opening up of millimeter wave frequency bands, millimeter wave chips have become a hot spot. Among them, the frequency modulation linearity and frequency modulation bandwidth of the millimeter-wave broadband voltage-controlled oscillator determine the performance of the system to a large extent as key indicators. [0003] Such as figure 2 As shown, the existing voltage-controlled oscillators are composed of N-type transistors M21, M22, integrated on-chip resonant inductors L21, L21,...
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IPC IPC(8): H03B5/12
CPCH03B5/1206H03B5/124
Inventor 田彤赵辰袁圣越丁博文沈叶东
Owner 麦堆微电子技术(上海)有限公司