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Delta modulator, analog-to-digital converter including delta modulator, and communication device

A delta modulation, digital converter technology, applied in the field of analog/digital converters and communication devices

Active Publication Date: 2021-06-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sigma-delta analog / digital converter has a high signal-to-noise ratio (SNR), but the feedback gain of the delta modulator including passive components is fixed at 1

Method used

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  • Delta modulator, analog-to-digital converter including delta modulator, and communication device
  • Delta modulator, analog-to-digital converter including delta modulator, and communication device
  • Delta modulator, analog-to-digital converter including delta modulator, and communication device

Examples

Experimental program
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Embodiment Construction

[0094] figure 1 It is a block diagram of a communication device (CD) according to an exemplary embodiment.

[0095] Refer figure 1 The communication device can include an analog / digital converter (ADC) 10, antenna 20, a radio frequency (RF) circuit 30, and a reference voltage generator 40. In an exemplary embodiment, the communication device may represent a receiving terminal for receiving various information. However, exemplary embodiments are not limited thereto. In some exemplary embodiments, the communication device may represent a transceiver for transmitting various information, or transceivers that perform both the reception function and the transfer function. The individual components included in the communication device can be implemented using a hardware block (e.g., an analog circuit, and / or digital circuit) or software block (e.g., instructions executed by the processor).

[0096] The radio frequency circuit 30 can receive a radio frequency signal IN via an antenn...

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Abstract

An incremental modulator with variable feedback gain, including an analog-to-digital converter of the incremental modulator and a communication device. The delta modulator includes: a group of capacitors commonly connected to a first terminal and classified into a first group of capacitors and a second group of capacitors; a comparator sequentially generating An n-bit digital output signal; and a switch group including switches respectively connected to the capacitors, wherein the switches are respectively classified into first capacitors respectively connected to the first capacitor group and the second capacitor group. a switch group and a second switch group, and the first switch group and the second switch group operate according to a first control signal and a second control signal respectively, the first control signal and the second Two control signals are determined based on the n-bit digital output signal and the variable feedback gain. The delta modulator according to the present disclosure can be implemented with lower power consumption and small implementation area.

Description

[0001] [Cross-reference for related applications] [0002] The present application claims priority to the Korean Patent Application No. 10-2017-0014111 of the Korean Intellectual Property Office on January 31, 2017, which is incorporated herein by reference. Technical field [0003] The method and apparatus according to an exemplary embodiment relates to a communication device, and more specifically, a incremental (Δ) modulator having a variable feedback gain, including an analog / digital conversion of the increment modulator The communication device including the increment modulator. Background technique [0004] The analog / digital converter converts an analog input signal into a digital output signal. The wireless communication system converts the received RFY FREQUENCY, RF) to baseband signals using an analog / digital converter, and generates a digital output signal based on an analog baseband signal. An instance of analog / digital converter can include a flash analog / di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M3/00
CPCH03M3/49H03M3/434H03M3/464H03M3/436H03M3/426H03M1/002H03M1/1245H03M1/186H03M3/022H03M3/498
Inventor 李在训李宗祐罗启伦吴承贤李钟娓
Owner SAMSUNG ELECTRONICS CO LTD
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