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Accumulation type charge domain correlator

A correlator and charge technology, applied in the direction of electrical components, transmission systems, etc., can solve the problem of insufficient sensitivity

Inactive Publication Date: 2018-08-10
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, its application is limited due to its insufficient sensitivity.

Method used

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  • Accumulation type charge domain correlator
  • Accumulation type charge domain correlator
  • Accumulation type charge domain correlator

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Embodiment Construction

[0023] The present invention is described in detail below in conjunction with accompanying drawing

[0024] Depend on image 3 As shown, taking the four-point sampling of the received signal as the first derivative of Gaussian as an example, image 3 (a) is the timing sequence of the circuit. The proposed accumulative charge domain correlator has three modes:

[0025] 1. Sampling mode. Such as image 3 As shown in (b), in this mode, close, then to Sequentially close and break for sampling.

[0026] 2. Accumulation mode. Such as image 3 (c) As shown by the circular dotted line, in this mode, Closed in turn, the charge is accumulated in turn, and finally the relevant voltage is output. When sampling a negative voltage, such as and The positively charged plate of the capacitor that previously sampled the positive voltage is connected to the negatively charged plate of the capacitor.

[0027] 3. Reset mode. Such as image 3 (c) Shown by the dotted line in the...

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Abstract

The invention relates to a charge domain correlator applicable to an ultra wide band transceiver. Compared with a traditional mean type charge domain correlator, a new-type accumulation type charge domain correlator has the advantages that the sensitivity is clearly improved and a relatively high PVT characteristic is achieved. According to the accumulation type charge domain correlator, a new-type mode of carrying out connection on sample capacitors is employed, so charges are accumulated to related voltages. Through adoption of the mode, the gain of each sample capacitor for the sensitivityis 1 and the gain of the other capacitors for the sensitivity is not reduced by the increased capacitor number and capacitance values, so the accumulation type charge domain correlator has the relatively high sensitivity. The capacitance mismatch influence is avoided, so the correlator has the relatively high PVT characteristic. The charge domain correlator is particularly applicable to the chargedomain correlator in the ultra wide band transceiver.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, and in particular relates to the design of a correlator in an ultra-wideband transceiver. Background technique [0002] Generally, correlation receiving ultra-wideband receivers use voltage multiplication and integration for correlation, but the process of voltage multiplication and integration consumes a lot of power. The charge domain correlator only has dynamic power consumption, so it saves power consumption compared with the general voltage correlator. However, its application is limited due to its insufficient sensitivity. Therefore, how to design a charge domain correlator with higher sensitivity is very meaningful. Contents of the invention [0003] The purpose of the present invention is to design a charge domain correlator with higher sensitivity. [0004] In order to achieve the above purpose, the present invention firstly analyzes the traditional average charge domain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/40
CPCH04B1/40
Inventor 徐耀东李强
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA