A 18-pJ/Pulse OOK CMOS Transmitter for Multiband UWB Impulse Radio

Phan, Tuan-Anh; Lee, Jeongseon; Krizhanovskii, V.; Han, Sehee; Lee, Sang‐Gug

doi:10.1109/lmwc.2007.903464

Cited by 59 publications

(33 citation statements)

References 6 publications

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“…on the 3.1-10.6 GHz band, some pulse generators target for other bands [33,47,57,[59][60][61]. The way to generate pulses for high-frequency band UWB applications can be classified into three categories.…”

Section: Discussionmentioning

confidence: 99%

Gaussian pulse approximation using standard CMOS and its application for sub‐GHz UWB impulse radio

Zhang

El-Gamel

Bayoumi

2008

Circuit Theory & Apps

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SUMMARYGaussian pulse is widely used in communication systems. The true Gaussian function is not physically realizable, but it can be approximated through linear functions. This paper presents a Gaussian pulse approximation approach to generate a quasi-Gaussian pulse by using the transient response of a CMOS inverter. The basic structure of the proposed design includes a digital variable square pulse generator, a Gaussian pulse generator and a small antenna model. The digital variable square pulse generator makes the amplitude and width of the generated quasi-Gaussian pulse tunable. The proposed pulse generator works well for three different electrical small antenna models. The simulation results show that the generated pulse approximates the Gaussian shape very well and the radiated signal at the antennas is compliant with the Federal Communication Commission's spectral mask for the 0-960 MHz band. The simple structure of this Gaussian pulse generator lends itself to a low-power, single-chip UWB transceiver solution.

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Section: Discussionmentioning

confidence: 99%

Gaussian pulse approximation using standard CMOS and its application for sub‐GHz UWB impulse radio

Zhang

El-Gamel

Bayoumi

2008

Circuit Theory & Apps

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“…Generally, there have been three major methods to generate short pulses which can comply with FCC's spectral mask: carrier-based method [2], [4], [6], using pulse shaping filter [5], using ON/OFF pulsed oscillator [3]. First of all, the carrier-based method is not suitable for simple structure and low power operation.…”

Section: A Short Pulse Generatormentioning

confidence: 99%

“…For last several years, there have been many reports on Ultra-wideband (UWB) systems such as 3 -10 GHz UWB communication system [1] - [3] and 22 -29 GHz UWB pulse radar system [4] - [7]. Especially, UWB pulse radar system is approved for short range radar (SRR) for automotive, which is defined by Federal Communications Commission (FCC) in 2002 [8].…”

Section: Introductionmentioning

confidence: 99%

A CMOS Ultra-wideband radar transmitter with pulsed oscillator

Lee

Sim

Hong

2010

2010 IEEE Radio Frequency Integrated Circuits Symposium

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A design of Ultra-wideband (UWB) radar transmitter is presented. The transmitter which uses a pulsed oscillator consists of pulse generator, switching buffers and control signal generator. The control signal generator includes modulators of binary-phase shift keying (BPSK) and pulse position modulation (PPM) for spreading the spectral lines. It is fabricated using 0.13 μm CMOS technology and the chip size is 910 × 485 μm 2 . The output spectrum is centered at the 22.0 GHz with the 10-dB bandwidth of 2.48 GHz and the pulse width of output pulse is tunable from 630ps to 830ps. Also, the BPSK and PPM modulations are confirmed. In conclusion, the generated pulse complies with FCC's spectral mask.Index Terms -Ultra-wideband (UWB), UWB radar transmitter, CMOS RFIC, pulse generator, automotive radar, short range radar (SRR), binary-phase shift keying (BPSK), pulse position modulation (PPM)

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“…Further, it is equally challenging to generate baseband pulses with large bandwidth, and hence the up-converted UWB pulses typically only occupy either the low band or part of the high band. Some clever circuit techniques can be applied to simplify the architecture and reduce the power consumption, e.g., by directly switching on and off an RF oscillator using the modulated baseband data instead of up-conversion using a mixer [12]. Due to the transient time to start and stop the oscillator, however, the generated pulse width is usually quite large (more than 3 ns in [12]), and hence generated UWB pulses can only occupy a small bandwidth (528 MHz in [12]).…”

Section: Uwb Pulse Generation Approachesmentioning

confidence: 99%

Distributed Waveform Generator: A New Circuit Technique for Ultra-Wideband Pulse Generation, Shaping and Modulation

Zhu

Zuegel

Marciante

et al. 2009

IEEE J. Solid-State Circuits

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Abstract-A new circuit technique, the distributed waveform generator (DWG), is proposed for low-power ultra-wideband pulse generation, shaping and modulation. It time-interleaves multiple impulse generators, and uses distributed circuit techniques to combine generated wideband impulses. Built-in pulse shaping can be realized by programming the delay and amplitude of each impulse similar to an FIR filter. Pulse modulation schemes such as on-off keying (OOK) and pulse position modulation (PPM) can be easily applied in this architecture. Two DWG circuit prototypes were implemented in a standard 0.18 m digital CMOS technology to demonstrate its advantages. A 10-tap, 10 GSample/s, single-polarity DWG prototype achieves a pulse rate of 1 GHz while consuming 50 mW, and demonstrates OOK modulation using 16 Mb/s PRBS data. A 10-tap, 10 GSample/s, dual-polarity DWG prototype was developed to generate UWB pulses compliant with the transmit power emission mask. Based on the latter DWG design, a reconfigurable impulse radio UWB (IR-UWB) transmitter prototype was implemented. The transmitter's pulse rate can be varied from 16 MHz range up to 2.5 GHz. The bandwidth of generated UWB pulses is also variable, and was measured up to 6 GHz ( 10 dB bandwidth). Both OOK and PPM modulation schemes are successfully demonstrated using 32 Mb/s PRBS data. The IR-UWB transmitter achieves a measured energy efficiency of 45 pJ/pulse, independent of pulse rate.

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A 18-pJ/Pulse OOK CMOS Transmitter for Multiband UWB Impulse Radio

Cited by 59 publications

References 6 publications

Gaussian pulse approximation using standard CMOS and its application for sub‐GHz UWB impulse radio

Gaussian pulse approximation using standard CMOS and its application for sub‐GHz UWB impulse radio

A CMOS Ultra-wideband radar transmitter with pulsed oscillator

Distributed Waveform Generator: A New Circuit Technique for Ultra-Wideband Pulse Generation, Shaping and Modulation

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