Low-Power ASK Detector for Low Modulation Indexes and Rail-to-Rail Input Range

被引：17

作者：

Fiore, Vincenzo ^{[1
,2
]}

Ragonese, Egidio ^{[3
]}

Palmisano, Giuseppe ^{[1
]}

机构：

[1] Univ Catania, DIEEI, I-95125 Catania, Italy

[2] DICE GmbH & Co KG, A-4040 Linz, Austria

[3] STMicroelectronics, I-95121 Catania, Italy

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 2016年 / 63卷 / 05期

关键词：

Amplitude shift keying (ASK) demodulator; ASK receiver; batteryless radio-frequency (RF) system; complementary metal-oxide-semiconductor technology; envelope detector; low power consumption; RF harvester; ultrahigh-frequency integrated circuit; SYSTEM;

D O I：

10.1109/TCSII.2015.2503651

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A high-performance ultrahigh-frequency amplitude shift keying (ASK) detector for low-power radio-frequency (RF) receivers is proposed. The circuit is based on a high-gain common-source topology with a feedback loop that provides adaptive biasing. Hence, high sensitivity and rail-to-rail input operation are achieved along with low power consumption. The detector was implemented in a standard 130-nm complementary metal-oxide-semiconductor technology. Sensitivity measurements demonstrate correct detection of a 2-Mb/s ASK-modulated 915-MHz signal with a peak level and a modulation index of around 200 mV and 5%, respectively, which means an envelope signal amplitude of as low as 5 mV. The circuit draws less than 3.4 mu A from a 1.2-V power supply while operating with rail-to-rail RF variations and modulation indexes from 5% to 100%. This performance makes the detector suitable for batteryless systems with RF energy harvesting.

引用

页码：458 / 462

页数：5

共 12 条

[1] A Passive UHF RFID Demodulator With RF Overvoltage Protection and Automatic Weighted Threshold Adjustment [J].