Ultra-Low-Power Short-Range Radios

2015 ◽  
Keyword(s):  
Low Power ◽  
Short Range ◽  
Ultra Low Power

A fully-integrated CMOS UWB transceiver for ultra-low-power short-range application

2010 ◽  
Vol 39 (7) ◽  
pp. 783-790 ◽  
Author(s):  
Mengmeng Liu ◽  
Sheng Zhang ◽  
Shuo Wang ◽  
Runde Zhou
Keyword(s):  
Low Power ◽  
Short Range ◽  
Ultra Low Power ◽  
Fully Integrated

scholarly journals Low-power integrated transmitter design using frequency multiplication techniques

2020 ◽  
Author(s):  
Markus Stadelmayer ◽  
Tim Schumacher ◽  
Thomas Faseth ◽  
Harald Pretl
Keyword(s):  
Low Power ◽  
Radio Frequency ◽  
Short Range ◽  
Cmos Process ◽  
Power Demand ◽  
Frequency Multiplication ◽  
Ultra Low Power ◽  
Third Harmonic ◽  
Harmonic Extraction ◽  
Transmitter Design

Abstract This paper proposes an approach to employ frequency multiplication techniques like edge-combining and third harmonic extraction in ultra-low-power integrated transmitter design. The overall power demand of the transmitter is reduced by keeping operating frequency of its components low. For that reason, edge-combining and third harmonic extraction are integrated directly into a switched mode power amplifier. Hence, the radio frequency signal is generated just before it is fed to the antenna. This leads to a reduced power demand of the overall transmitter in comparison to conventional designs where the oscillator and other components are operated directly at the radio frequency. Within this paper we propose an amplifier that generates a 2.4 GHz carrier frequency from a ring oscillator running at a low 200 MHz resulting in a frequency multiplication factor of twelve. The exemplary design is targeted to be used in ultra-low-power short range applications. Hence, our simulations using extracted layout models show that the amplifier provides an output power of approximately -12 dBm at a supply voltage of 0.6 V while consuming 2.4 mW of power fully integrated in a 180 nm 1P6M CMOS process. This demonstrates that the proposed techniques are especially suitable for ultra-low-power transmitter in short range applications. That includes medical and body area network applications.

scholarly journals Intersystem Interference Study between Medical Capsule Camera Endoscopy and Other Systems in Co-Channel and Adjacent Bands

2021 ◽  
Vol 11 (4) ◽  
pp. 7405-7410
Author(s):  
Z. A. Shamsan ◽  
K. Almuhanna
Keyword(s):  
Low Power ◽  
Frequency Band ◽  
High Frequency ◽  
Short Range ◽  
Airborne Radar ◽  
Coupling Loss ◽  
Ultra Low Power ◽  
Wireless Device ◽  
Medical Endoscopy ◽  
Interference Study

The Ultra-High Frequency (UHF) band occupies a very vital region in the spectrum and is becoming very congested because many applications use it. The capsule camera (CapCam), an ultra-low power wireless device, is a Short Range Device (SRD) application that utilizes the UHF spectrum for medical endoscopy and it is designed to operate at the 430-440MHz frequency band range. This study will focus on the interference between the CapCam and other systems operating in the frequency of 435MHz and adjacent bands. Other systems that can operate in this band include non-specific SRD and radiolocation services such as airborne radar and ground radar stations. The Minimum Coupling Loss (MCL) method is implemented in this study. The findings showed that restricted distances between the CapCam and other services must be considered when the CapCam is in use. This should be done to avoid harmful interference from the CapCam especially in the case of radiolocation services.

scholarly journals Ultra‐low power TIA with variable bandwidth in 0.13 μm CMOS for short‐range optical interconnects

2021 ◽  
Author(s):  
Nga T. H. Nguyen ◽  
Ikechi A. Ukaegbu ◽  
Jamshid Sangirov ◽  
Mohammad Hashmi
Keyword(s):  
Low Power ◽  
Optical Interconnects ◽  
Short Range ◽  
Ultra Low Power ◽  
Variable Bandwidth
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