A 7.2 – 7.7 GHz FM-UWB transceiver prototype

Bonakdar, H.; Detratti, Marco; Perez, E.; Lobeira, M.; Zhao, Yi; Dong, Yang; Veenendaal, G. van; Long, John R.; Farserotu, J.; Le-Roux, Elise; Hennemann, C.

doi:10.1109/icuwb.2009.5288842

Cited by 12 publications

(17 citation statements)

References 10 publications

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“…Hence, LC VCO is a better choice for FM-UWB applications. Furthermore, several LC VCOs operating at the UWB frequencies have been reported [23][24][25][26][27][28][29][30][31] and are widely used in FM-UWB transmitters for RF carrier generation [12][13][14][15], [32][33][34]. Table 1 provides a comparison among the most recent published VCOs operating at the UWB frequencies.…”

Section: Rf Carrier Generationmentioning

confidence: 99%

A Survey on FM-UWB Transceivers

Ali¹,

Shawkey²,

Zekry³

2013

IJCA

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This paper surveys the research on frequency modulated ultrawideband (FM-UWB) transceivers. FM-UWB system uses low modulation index digital FSK followed by high modulation index analog FM to generate a constant envelope UWB signal with a flat power spectral density and steep spectral roll-off. FM-UWB can be seen as an analog implementation of a spread spectrum system with spreading gain equal to the modulation index. FM-UWB system is suitable for low data rate and short-range applications. The advantages of FM-UWB system such as low power consumption, very low radiated power (−41.3 dBm/MHz), good coexistence with other existing wireless technologies, and robustness to interference and multipath making it suitable for Wireless Body Area Network (WBAN) in medical applications. General TermsUltra-wideband (UWB), UWB transceivers.

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Section: Rf Carrier Generationmentioning

confidence: 99%

A Survey on FM-UWB Transceivers

Ali¹,

Shawkey²,

Zekry³

2013

IJCA

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“…The on-chip pseudo random bit source (PRBS) with a bit length of 2 27 -1 provides the transmitted data under DR of 12.5 kb/s. This work focuses on the proposed transmitter architecture, which is different from the existing transmitter configurations [4,5,7,[9][10][11][12][13][14]. From similarity degree, this work is close to [9].…”

Section: Architecturementioning

confidence: 99%

“…Accordingly, the FM-UWB receiver employs a dual frequency demodulation method: the UWB FM signal is demodulated by a delaymultiplication technique to recover the triangular subcarrier; followed by a down-conversion based subcarrier processor (SCP) and a digital FSK demodulator to reconstruct the transmitted data. The FM-UWB receiver can perform FM demodulation without a local oscillator (LO) or carrier synchronization, which makes the system simplified [4][5][6]. Besides, the antenna design of the FM-UWB system is simple because of a well-controlled RF spectrum and avoiding a high peakto-average transmit power ratio [7].…”

Section: Introductionmentioning

confidence: 99%

“…The existing transceiver prototypes [4,5] with limited subcarrier modulation index require a four-phase SCP, which complicates the system design and has poor reconfiguration. The existing regenerative receiver [6] and low-complexity transmitter [7] achieve low power consumption but tend to be sensitive to circuit parameter variation or are considered not as robust as the conventional FM-UWB system.…”

Section: Introductionmentioning

confidence: 99%

“…The frequency modulated UWB (FM-UWB) system generates a constant-envelope UWB signal with wideband frequency modulation (FM), featuring a flat inband power spectral density (PSD) and a steep spectral roll off to enable a well-defined RF bandwidth [4][5][6][7][8][9][10][11][12][13][14]. Fig.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A Low-Power Low-Complexity Transmitter for FM-UWB Systems

Zhou¹,

Wang²

2015

JSTS:Journal of Semiconductor Technology and Science

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Abstract-A frequency modulated ultra-wideband (FM-UWB) transmitter with a high-robust relaxation oscillator for subcarrier generation and a dual-path Ring VCO for RF FM is proposed, featuring low power and low complexity. A prototype 3.65-4.25 GHz FM-UWB transceiver employing the presented transmitter is fabricated in 0.18 μm CMOS for shortrange wireless data transmission. Experimental results show a bit error rate (BER) of 10 −6 at a data rate of 12.5 kb/s with a communication distance of 60 cm is achieved and the power dissipation of 4.3 mW for the proposed transmitter is observed from a 1.8 V supply.

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Reconfigurable FM-UWB transmitter

2011

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A 100 kbit/s frequency modulated ultra-wideband (FM-UWB) transmitter with digitally reconfigurable subcarrier modulation index (b sub ), radio-frequency bandwidth (B RF ) and carrier frequency band is presented and fabricated in 0.18 mm CMOS. A delta-sigma (DS) fractional-N phase-locked loop with an amplitude-controlled relaxation voltage-controlled oscillator (VCO) and digitally configurable 2-FSK modulation is designed for subcarrier generation, followed by a dualpath LC VCO, the centre frequency of which is set by a digitally configurable duty-cycled frequency-locked loop for nearly 600 MHz UWB signal generation.Introduction: The frequency modulated ultra-wideband (FM-UWB) transmitter employs a dual-frequency modulation technique: FSKmodulated triangular subcarrier generation where triangular frequency f1 represents data 0 and f2 represents 1; followed by RF frequency modulation (FM) for UWB signal generation using an RF oscillator with the centre frequency f c calibrated [1]. A high ratio of frequency deviation ( f2 2 f1) to data rate (DR) relaxes the receiver design. For example, it is easier for the receiver to make a difference between data 0 and 1 from a frequency deviation of +300 kHz (b sub ¼ 6) than from that of +50 kHz (b sub ¼ 1) during a 10 ms period for 100 kbit/s DR. However, the existing DDFS method [1] based on phase accumulation for subcarrier generation has low b sub . Also, the existing f c calibration circuit [1] using closed-loop frequency deviation detection and open-loop frequency deviation compensation requires complex modules such as a phase-locked loop (PLL), an analogue-to-digital converter, a digital-to-analogue converter (DAC) and a read-only memory. In this Letter, with DS fractional-N PLL based subcarrier generation and a duty-cycled frequency-locked loop (FLL) based f c calibration, we propose a 100 kbit/s FM-UWB transmitter with digitally configurable b sub , B RF and f c , which avoids the above problems.

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A 7.2 – 7.7 GHz FM-UWB transceiver prototype

Cited by 12 publications

References 10 publications

A Survey on FM-UWB Transceivers

A Survey on FM-UWB Transceivers

A Low-Power Low-Complexity Transmitter for FM-UWB Systems

Reconfigurable FM-UWB transmitter

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