One Mbps 1 nJ/b 3.5–4 GHz Fully Integrated FM-UWB Transmitter for WBAN Applications

Ali, Mohamed; Shawkey, Heba; Zekry, Abdelhalim

doi:10.1109/tcsi.2017.2771369

Cited by 27 publications

(12 citation statements)

References 31 publications

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“…18. The achieved transmitter efficiency (output power divided by total power consumption) of 12.4% is better than the state of the art [9], [10], [30]; however, one should note that in this case, there will be no additional losses coming from the external TR switch needed to separate the input and output ports. The output power of the transmitter can be tuned from −11.4 to −35 dBm in steps smaller than 3 dB by controlling the DCO buffer amplitude and the PPA bias current.…”

Section: Measurement Resultsmentioning

confidence: 92%

A 4-GHz Low-Power, Multi-User Approximate Zero-IF FM-UWB Transceiver for IoT

Kopta

Enz

2019

IEEE J. Solid-State Circuits

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This paper presents a 4-GHz FM ultra-wideband (UWB) transceiver designed for the Internet of Things and body area network applications. Robustness to interferers and low power spectral density allow FM-UWB to coexist with narrowband radios, while large signal bandwidth strongly relaxes constraints on the frequency synthesis blocks enabling the full integration of the radio at low power. The transceiver, integrated with a 65-nm standard CMOS technology, consists of a transmitter and two receivers that provide two modes of operation. The transmitter consumes 575 µW while transmitting a 100-kb/s signal at 4 GHz at an output power of −11.4 dBm. A single RF IO pad is used and the fully integrated matching network is shared among the transmitter and the receivers. The low-power receiver consumes 267 µW and provides a single communication channel at 100 kb/s in the 4-GHz band, with a −57-dBm sensitivity. The second receiver provides a better performance and takes full advantage of the FM-UWB features, as it implements wireless communication with up to four parallel channels sharing the same RF band. It consumes 550 µW and provides −68-dBm sensitivity at 100 kb/s per channel. The FM-UWB architecture can tolerate a very large reference frequency offset of up to ±8000 ppm. This unique feature potentially allows for a quartzfree synthesizer, resulting in a radio with no off-chip components.

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Section: Measurement Resultsmentioning

confidence: 92%

A 4-GHz Low-Power, Multi-User Approximate Zero-IF FM-UWB Transceiver for IoT

Kopta

Enz

2019

IEEE J. Solid-State Circuits

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“…3) UWB Pulse Radar: The ultra-wideband (UWB) frequency range that extends from 3.1 to 10.6 GHz is free from interference, except for the Wi-Fi at 5 GHz. UWB systems offer some benefits over narrowband systems, including low implementation complexity, good immunity to both noise and multi-path fading, low power dissipation, and better coexistence with other existing narrowband links [122]. Since its transmitted power is low (<-41.3 dBm/MHz), it has no harmful effects on human body.…”

Section: B Radar-based Respiratory Monitoringmentioning

confidence: 99%

Contact and Remote Breathing Rate Monitoring Techniques: A Review

et al. 2021

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Breathing rate monitoring is a must for hospitalized patients with the current coronavirus disease 2019 (COVID-19). We review in this paper recent implementations of breathing monitoring techniques, where both contact and remote approaches are presented. It is known that with non-contact monitoring, the patient is not tied to an instrument, which improves patients' comfort and enhances the accuracy of extracted breathing activity, since the distress generated by a contact device is avoided. Remote breathing monitoring allows screening people infected with COVID-19 by detecting abnormal respiratory patterns. However, non-contact methods show some disadvantages such as the higher set-up complexity compared to contact ones. On the other hand, many reported contact methods are mainly implemented using discrete components. While, numerous integrated solutions have been reported for non-contact techniques, such as continuous wave (CW) Doppler radar and ultrawideband (UWB) pulsed radar. These radar chips are discussed and their measured performances are summarized and compared. Index Terms-Chronic obstructive pulmonary diseases (COPD), COVID-19, breathing monitoring techniques, Doppler radar, ultra-wideband (UWB) pulse radar. I. INTRODUCTIONT TE main function of the respiratory system is gas exchange. Oxygen is transferred from the external ambient into our bloodstream, while carbon dioxide is expelled outside [1]. Fig. 1 illustrates the respiratory system including the upper and lower respiratory tract regions. When inhaling, the air flow passes through the larynx and the trachea, and then splits into two bronchi. Each bronchus is divided into two Manuscript

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“…Recently, MMW range is described as a complementary imaging technique instead of exposure of patient to radiations as magnetic resonance, X-Ray or Ultrasound [6][7][8]. The antennas depend on 5G technology to meet the capacity, latency and the bandwidth requirements to support the request of the growing number of wireless communication users [9][10]. Besides, antenna and associated electronics could be designed to support multiple frequency channels for data communications of a group of implantable sensors simultaneously, with the need for a wideband frequency channel for RF energy harvesting to obtain a suitable power level for device operation [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Single-Chip Two Antennas for MM-Wave Self-Powering and Implantable Biomedical Devices

Elsheakh¹,

Kayed²,

Shawkey³

2021

ACES

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Implantable biomedical applications arise the need for multi-band sensors with a wideband frequency channel for RF energy harvesting operation. Using a separate antenna for energy harvesting can simplify device circuit complexity and reduces operation frequency bands interference. This paper demonstrates the design of single chip with two separate integrated antennas for implantable biomedical applications. The two antennas have different structures with orthogonal polarization to achieve low mutual coupling and negligible interaction between them. The first antenna is a multi-band meander line (MBML) designed for multiple channels data communication, with quad operating bands in the MM-wave range from 22-64 GHz with area 1150 × 200μm2. The second antenna is a wideband dipole antenna (WBDA) for RF energy harvesting, operates in the frequency range extend from 28 GHz to 36 GHz with area 1300×250μm2. The proposed antennas are designed by using high frequency structure simulator (HFSS) and fabricated by using UMC180nm CMOS technology with total area 0.55 mm2. The MBML frequency bands operating bandwidths can reach 2 GHz at impedance bandwidth ≤ -10 dB. While, the WBDA antenna has gain -2 dB over the operating band extend from 28 GHz up to 36 GHz. The antenna performance is simulated separately and using the human-body phantom model that describes layers of fats inside body, and shows their compatibility for in body operation. Die measurements is performed using on wafer-probing RF PICOBROBES and shows the matching between simulation and measurement values.

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One Mbps 1 nJ/b 3.5–4 GHz Fully Integrated FM-UWB Transmitter for WBAN Applications

Cited by 27 publications

References 31 publications

A 4-GHz Low-Power, Multi-User Approximate Zero-IF FM-UWB Transceiver for IoT

A 4-GHz Low-Power, Multi-User Approximate Zero-IF FM-UWB Transceiver for IoT

Contact and Remote Breathing Rate Monitoring Techniques: A Review

Single-Chip Two Antennas for MM-Wave Self-Powering and Implantable Biomedical Devices

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