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Injection-locked frequency divider, phase locking circuit and integrated circuit

A phase-locked loop and injection-locked technology, applied in the direction of electrical components, automatic power control, etc., can solve the problem of limited locking range of millimeter-wave injection-locked frequency divider division ratio, and achieve the effect of increasing the frequency locking range

Active Publication Date: 2012-04-11
TAIWAN SEMICON MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the division ratio (Division Ratio) (usually 2) and locking range of the mmWave injection-locked frequency divider are limited by nature

Method used

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  • Injection-locked frequency divider, phase locking circuit and integrated circuit
  • Injection-locked frequency divider, phase locking circuit and integrated circuit
  • Injection-locked frequency divider, phase locking circuit and integrated circuit

Examples

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Embodiment Construction

[0030] The description of the exemplary embodiments is elucidated with the accompanying drawings, which are considered a part of the complete description. In this description, relative terms such as "lower", "higher", "horizontal", "vertical", "above", "below", "upper", "lower", "top" and " "Bottom" and its derivatives (eg, "horizontally," "downwardly," "upwardly," etc.) should be considered in relation to the orientations shown in the figures subsequently described or presently discussed. These relative terms are used for convenience of description and do not require the device to be constructed or operated in a particular orientation. Relative terms are used for convenience of description and do not require that a device be operated or configured in a particular orientation. Terms of communicating, coupling, and the like, such as "connected" and "interconnected," mean that a feature communicates with another feature, directly or indirectly, through intervening means, unless...

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Abstract

The invention discloses an injection-locked frequency divider, a phase locking circuit and an integrated circuit. Each of the integreated circuit and the phase locking circuit comprises the injection-locked frequency divider, a phase frequency detector, a signal generator and a frequency divider. The representative injection-locked frequency divider includes a differential direct injection pair that is configured to receive and mix differential injection signals and an oscillator that is electrically connected to the differential direct injection pair and produces an operating frequency based on the mixed differential injection signals.

Description

technical field [0001] The present invention relates generally to an electronic circuit, and more particularly to an injection-locked frequency divider. Background technique [0002] Millimeter waves typically refer to waves with a frequency band between 30 and 300 gigahertz (GHz). In this frequency range, electromagnetic signals have very small wavelengths. Since the size of passive device devices is usually proportional to the wavelength, the size of passive devices operating at millimeter wave frequencies will be reduced to make circuit integration more efficient. Currently, mmWave applications include 60GHz wireless personal area network, 77GHz automotive anti-collision radar, and 99GHz image sensing. [0003] mmWave frequency dividers are typically included in high frequency phase locked loops. Injection-locked frequency divisors are well suited for mmWave operation due to their high-speed operation capability and low power consumption. However, the division ratio (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/085H03L7/08
CPCH03L7/085H03L7/08H03L7/18
Inventor 谢协宏周淳朴薛福隆
Owner TAIWAN SEMICON MFG CO LTD
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