Low-voltage BIMOS AM front-end amplifier

1990 ◽  
Vol 137 (1) ◽  
pp. 57 ◽  
Author(s):  
M. Steyaert ◽  
Z. Chang
Keyword(s):  
Author(s):  
D. Yates ◽  
E. Lopez-Morillo ◽  
R. G. Carvajal ◽  
J. Ramirez-Angulo ◽  
E. Rodriguez-Villegas
Keyword(s):  

Electronics ◽  
2021 ◽  
Vol 10 (17) ◽  
pp. 2060
Author(s):  
Na Bai ◽  
Liang Wang ◽  
Yaohua Xu ◽  
Yi Wang

In this paper, we present a new digital baseband processor for UHF tags. It is a low-power and low-voltage digital circuit and adopts the Chinese military standard protocol GJB7377.1. The processor receives data or commands from the RF front-end and carries out various functions, such as receiving and writing data to memory, reading and sending memory data to the RF front-end and killing tags. The processor consists of thirteen main sub-modules: TPP decoding, clock management, random number generator, power management, memory controller, cyclic redundancy check, FM0 encoding, input data processing, output data processing, command detection module, initialization module, state machine module and controller. We use ModelSim for the TPP decoding simulation and communication simulation between tag and reader, and the simulation results meet the design requirements. The processor can be applied to UHF tags and has been taped out using a TSMC 0.18 um CMOS process.


Author(s):  
M. Sumathi ◽  
S. Malarvizhi

In this paper, low voltage design concepts and new CMOS front-end circuits for 2.4GHz wireless applications are presented. The performances of these circuits are analysed and compared with other existing structures using TSMC 0.18-μm CMOS technology scale. The design trade-offs between impedance matching, power gain and noise figure of low-noise amplifiers are highlighted. The advantage of the introduced mixer topology is expressed in terms of conversion gain, noise figure and linearity. At a supply voltage of 1.8V, the design and performance analysis have been performed using Agilent’s Advanced Design System (ADS2009) software.


Electronics ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 1474
Author(s):  
Zhiqun Li ◽  
Yan Yao ◽  
Zengqi Wang ◽  
Guoxiao Cheng ◽  
Lei Luo

This paper presents a low-voltage ZigBee transceiver covering a unique frequency band of 780/868/915/2400 MHz in 180 nm CMOS technology. The design consists of a receiver with a wideband variable-gain front end and a complex band-pass filter (CBPF) based on poles construction, a transmitter employing the two-point direct-modulation structure, a Ʃ-Δ fractional-N frequency synthesizer with two VCOs and some auxiliary circuits. The measured results show that under 1 V supply voltage, the receiver reaches −93.8 dBm and −102 dBm sensitivity for 2.4 GHz and sub-GHz band, respectively, and dissipates only 1.42 mW power. The frequency synthesizer achieves −106.8 dBc/Hz and −116.7 dBc/Hz phase noise at 1 MHz frequency offset along with 4.2 mW and 3.5 mW power consumption for 2.4 GHz and sub-GHz band, respectively. The transmitter features 2.67 dBm and 12.65 dBm maximum output power at the expense of 21.2 mW and 69.5 mW power for 2.4 GHz and sub-GHz band, respectively.


2000 ◽  
Vol 35 (12) ◽  
pp. 2000-2004 ◽  
Author(s):  
M. Harada ◽  
T. Tsukahara ◽  
J. Kodate ◽  
A. Yamagishi ◽  
J. Yamada

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