Rotary traveling wave voltage controlled oscillator with high power and large tuning ranges

A voltage-controlled oscillator, large tuning technology, applied in power oscillators, automatic power control, electrical components, etc., can solve problems such as difficulty in achieving high-power output and small device withstand voltage values.

Inactive Publication Date: 2012-08-01
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the reduction of the geometrical size of the device, although the intrinsic gain has been improved, the withstand voltage value of the device has also become very small, so it is difficult to achieve high power output

Method used

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  • Rotary traveling wave voltage controlled oscillator with high power and large tuning ranges
  • Rotary traveling wave voltage controlled oscillator with high power and large tuning ranges
  • Rotary traveling wave voltage controlled oscillator with high power and large tuning ranges

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Embodiment Construction

[0023] In the traditional rotating traveling wave oscillator, two transmission lines are cross-coupled, and the energy lost in the oscillation can be supplemented by coupling on the transmission line through a negative resistance network. The rotating traveling wave oscillator can be regarded as a distributed amplifier, connecting the output and input to form a feedback. After the signal undergoes a phase change of 360, the output signal is connected to the input again, thus forming a feedback loop. The signals on the two transmission lines are differential, and the differential transmission line can be modeled as figure 2 The network of inductance and capacitance. For the convenience of research, first divide the transmission line into N sections. Because the length of each section is very short, the inductance and capacitance of each section can be considered as lumped. with Indicates the inductance and capacitance of the Nth section.

[0024] The phase velocity on the tran...

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Abstract

The invention belongs to the technical field of millimeter wave integrated circuits, and particularly relates to a rotary traveling wave voltage controlled oscillator with high power and large tuning ranges. The rotary traveling wave voltage controlled oscillator is mainly composed of a rotary traveling wave oscillator, a negative resistance network, a voltage controlled variable capacitor and a voltage controlled phase shift network. According to the rotary traveling wave voltage controlled oscillator, parasitic effects to the oscillator can be reduced. Simultaneously, the tuning range of the output frequency of the voltage controlled oscillator is increased by coupling the voltage controlled variable capacitor in the oscillator; and waves with different phases are identical in phases after passing through the voltage controlled phase shift network by coupling the voltage controlled phase shift network in the oscillator, so that the waves with the identical phases are stacked together to achieve high power output.

Description

Technical field [0001] The invention belongs to the technical field of radio frequency microwave integrated circuits, and in particular relates to a rotating traveling wave voltage controlled oscillator with a large tuning range that can realize high power output. Background technique [0002] As people's requirements for communication speeds become higher and higher, the current crowded frequency bands can no longer meet this demand. In order to solve this contradiction, millimeter wave communication technology has become more and more important, because this frequency band can not only provide a large bandwidth, that is, a high transmission rate, but also free in some frequency bands, so the use of millimeter wave communication becomes A trend. Voltage controlled oscillators are generally used in frequency synthesizers to provide local oscillator signals for the entire system. In the communication circuit, the local oscillator signal can be up-converted or down-converted thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B5/32H03L5/00
Inventor 任俊彦马顺利李宁许俊
Owner FUDAN UNIV
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