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A High Data Rate Millimeter Wave Super Regenerative Receiver

A super-regenerative receiver, high data rate technology, applied in the transmission system, electrical components, etc., can solve the problems of damping oscillation residue, affecting demodulation, difficult to achieve phase restoration, etc., to amplify the dynamic range of the signal and realize gain adjustment , the effect of suppressing residual problems

Active Publication Date: 2022-03-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this kind of circuit has a simple structure, its spectrum utilization efficiency is low, and it is difficult to achieve high data rate communication. It is often used in low-power scenarios such as medical treatment and WSN [5], [6]
The super regenerative oscillator SILO cascade can achieve higher sensitivity and greater gain [7], but it still cannot be applied to data communication scenarios. This circuit has the problems of complex control signals and difficult phase restoration.
In addition, the existing technology has the problem of small dynamic range. Because the input signal power is too small, the oscillator cannot establish a large enough oscillation through the signal, and when the received signal power is too large, the oscillator enters a saturated state prematurely. the maximum amplitude
A small dynamic range limits the receiver's ability to detect amplitude information, while reducing the stability and reliability of the communication link
[0009] In addition, the existing technology is susceptible to inter-symbol interference at high symbol rates, which is caused by two factors. One is that the short oscillator switching time makes the residual problem more serious. This problem is exacerbated by the limitation that the regenerative oscillator SILO decreases with switching time
However, what limits the data rate of the system to a lower level may be caused by the pre-stage circuit of the super regenerative oscillator SILO. Since the amplifier cannot achieve infinite bandwidth, it will always be affected by the problem of intersymbol interference, and the same performance It is the damped oscillation residue of the previous symbol, which is superimposed on the subsequent symbol and affects demodulation
[0010] To sum up, the existing technology has a small dynamic range, SILO residual problem of the super-regenerative oscillator, and intersymbol interference problem of the pre-stage circuit. These factors limit the increase of the gain and data rate of the super-regenerative receiver. Invention of a complete super-regenerative receiver for high-rate communication scenarios

Method used

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  • A High Data Rate Millimeter Wave Super Regenerative Receiver
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  • A High Data Rate Millimeter Wave Super Regenerative Receiver

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Embodiment Construction

[0098] Such as figure 2 As shown, a high data rate millimeter-wave super-regenerative receiver of the present invention includes a low-noise amplifier LNA, a super-regenerative oscillator SILO, an IQ dual-way mixer Mixer, a first intermediate frequency amplifier AMP1, and a second intermediate frequency amplifier AMP2 and Quadrature Coupler Hybrid.

[0099] The radio frequency input signal RFin is connected to the signal input terminal of the low noise amplifier LNA. The two-phase output terminals of the low noise amplifier LNA are respectively connected to the two-phase input terminals of the super regenerative oscillator SILO. The quadrature coupler Hybrid couples the local oscillator input signal LO to generate mutually orthogonal IQ local oscillator signals. The IQ two-way mixer Mixer mixes the signal output by the super-regenerative oscillator SILO and the IQ local oscillator signal output by the quadrature coupler Hybrid to obtain an I-channel intermediate frequency s...

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Abstract

The invention discloses a high data rate millimeter wave super regenerative receiver, and relates to the millimeter wave transceiver technology of the new generation information technology. This solution is proposed in view of the problems existing in the prior art such as small dynamic range, SILO residue of super regenerative oscillator, inter-symbol crosstalk in front-stage circuit, etc. The low-noise amplifier is directly connected to the RF input signal; the super-regenerative oscillator adopts a cross-coupled oscillation structure, and a symmetrical MOS tube switch is connected in parallel at the resonant cavity, and the symmetrical MOS tube switch is controlled by a quenching signal. The advantages are that it can work at a high symbol rate; it has a large dynamic range; it can realize high-order digital modulation; it can prevent the spectrum leakage of the receiver; it is relatively simple and has strong flexibility.

Description

technical field [0001] The invention relates to the millimeter wave transceiver technology of the new generation information technology, in particular to a high data rate millimeter wave super regenerative receiver. Background technique [0002] With the growing demand for high-data-rate wireless communications and the development of broadband circuits in millimeter-wave bands, such as wideband low-noise amplifiers (LNAs, PAs), more and more attention has been paid to ultra-high-speed communications in millimeter-wave bands with moderate spectral efficiency. In recent years, many millimeter-wave receivers with high data rates in CMOS technology have been proposed. However, the realization of high data rate requires higher power consumption, because the gain of a single-stage amplifier in the millimeter-wave band is very limited, and multi-stage amplifier cascading is required to achieve sufficient gain, and the problem of broadband millimeter-wave amplifiers is even more ser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/12H04B1/16
CPCH04B1/12H04B1/16
Inventor 丰光银刘俊宏涂峻源吴仪王彦杰
Owner SOUTH CHINA UNIV OF TECH
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