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Frequency divider based on mems broadband phase detector

A phase detector and wide-band technology, applied in the direction of automatic power control, impedance network, electrical components, etc., can solve problems such as failure to work, and achieve the effect of convenient operation and novel structure

Active Publication Date: 2018-11-09
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, most of the widely used frequency dividers are for frequency division of a single frequency point, and cannot work in a wide frequency range

Method used

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  • Frequency divider based on mems broadband phase detector
  • Frequency divider based on mems broadband phase detector
  • Frequency divider based on mems broadband phase detector

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Embodiment Construction

[0014] Such as figure 1 , 2 Shown in and 3, a kind of frequency divider based on MEMS broadband phase detector, comprises MEMS broadband phase detector, DC automatic gain control AGC amplifier, the first voltage-controlled oscillator VCO1 and the second voltage-controlled oscillator VCO2, The first variable resistor R1 and the second variable resistor R2, multiplier; power supply V E The first voltage-controlled oscillator VCO1 is loaded through the first variable resistor R1, and the DC automatic gain control AGC amplifier is loaded through the second variable resistor R2 at the same time; the first voltage-controlled oscillator VCO1 generates a reference signal, by adjusting the first The size of a variable resistor R1 changes the control voltage V of the first voltage-controlled oscillator VCO1 C1 The reference signal and the feedback signal are respectively loaded to two symmetrical input ports formed by the ground wire 2 and the CPW signal wire 3 of the MEMS broadband p...

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Abstract

The invention discloses a frequency divider based on an MEMS (Micro Electro Mechanical Systems) broadband phase detector. The frequency divider comprises the MEMS broadband phase detector, a direct-current automatic gain control (AGC) amplifier, a first voltage-controlled oscillator VCO1, a second voltage-controlled oscillator VCO2, a first variable resistor R1, a second variable resistor R2 and a multiplying unit. The frequency divider has the beneficial effects that through use of the MEMS broadband phase detector, the frequency divider has a broadband characteristic, and frequency division of reference signals of different frequencies can be realized; synchronous adjustment of the reference signals and feedback signals is realized through control of voltages of the voltage-controlled oscillators and a gain of the direct-current AGC amplifier by the variable resistors, so that the frequency division can be realized even in the presence of circuit fluctuation; and the frequency divider has a novel structure, and is convenient to operate and compatible with GaAs monolithic microwave integrated circuits.

Description

technical field [0001] The invention relates to the field of microelectromechanical systems, in particular to a frequency divider based on a MEMS wideband phase detector. Background technique [0002] A frequency divider is a circuit that makes the output frequency 1 / N of the frequency of its input reference signal. Frequency dividers are used in many fields, such as wireless communication, radar, digital TV, broadcasting, etc. [0003] In the prior art, most widely used frequency dividers are for frequency division of a single frequency point, and cannot work in a wide frequency range. In addition, microelectronics technology promotes the development of circuit systems in the direction of small size and low power consumption. The advantages of MEMS devices such as small size and low power consumption make the above requirements possible. MEMS broadband phase detectors can maintain stable detection performance in a wide frequency band, and have the potential to construct b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03L7/18H03H3/02
CPCH03H3/02H03H2003/027H03L7/18
Inventor 廖小平韩居正
Owner SOUTHEAST UNIV
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