A CMOS amplitude detector for RF-BIST and calibration

Bou-Sleiman, Sleiman; Ismail, Mohammed

doi:10.1109/icecs.2009.5410778

Cited by 12 publications

(7 citation statements)

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“…Note also that a differential 5 th -order RC passive lowpass filter has been used for the phase detection method. A BJT-based amplitude detector circuit in Figure 11 (developed from [35], [36]) has been used for amplitude detection with a single supply of 5 V. Discrete transistors BC547 and BC558 have been employed in this work. Figure 10.…”

Section: A Polyphase Filter and An Envelope Detectormentioning

confidence: 99%

A 27-MHz frequency shift keying wireless system resilient to in-band interference for wireless sensing applications

Boonrungruedee

Khumsat²

2023

IJECE

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<span lang="EN-US">A 27-MHz wireless system with binary frequency shift keying (BFSK) modulation at 400-kHz is reported. The receiver has been designed to handle in-band interference corrupting the BFSK signal with the use of complex filters and amplitude comparison method. The BFSK modulation is carried out with a voltage-controlled oscillator before up-converting with a 27-MHz local oscillator. The bipolar junction transistors (BJT-based) power amplifier with 30% efficiency pumps 220 mW into a spiral antenna. The inductive-degenerated low-noise amplifier with a voltage of more than 30 dB amplifies an incoming signal before feeding into a mixer for complex direct down conversion. With deliberate Gaussian interference injection, the minimum ratios between the signal with interference and the interference only at the distance of 2.5, 10 and 15 m are 3.3, 8.5 and 11.5 dB, respectively at a maximum data rate of 20 kbps. Without any interference included, the system can achieve a data rate of 40 kbps at the maximum transmission distance of 15 m. Conceptually agreed with the presented bit-error-rate (BER) analysis, the BER measurements with Gaussian and single-tone/two-tone in-band interferences also confirm superiority offered by the amplitude comparison method where the signal-to-noise ratio is at 1 dB for BER=10<sup>-3</sup> at 10 kbps (10 dB better than the phase detection counterpart).</span>

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Section: A Polyphase Filter and An Envelope Detectormentioning

confidence: 99%

A 27-MHz frequency shift keying wireless system resilient to in-band interference for wireless sensing applications

Boonrungruedee

Khumsat²

2023

IJECE

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“…Also a measurement technique aimed at the intermodulation spec IP3, supported by spectral analysis of the RF detector response at low frequency, was presented [77]. Recently, sub-ranging detectors with increased gain and dynamic range have been proposed [41,80] and efforts toward more measurements with RF detectors were demonstrated, such as quadrature mismatch, RF isolation or intermodulation distortions (IMD) [42]. Since these measurements are sensitive to PVT variations and are used to derive the essential RF specs, calibration or adjustment of the detector characteristics appear imperative.…”

Section: Wideband Rf Detector Design For On-chip Testmentioning

confidence: 99%

“…For a detector with enhanced conversion gain the RF-DC transfer characteristic cannot cover the entire input range. To address this problem the sub-ranging technique using a digitally controlled bias network was proposed in [41,42].…”

Section: Introductionmentioning

confidence: 99%

“…The detector benefits from gain boosting mechanism and sub-ranging technique, which supported by high gain VGA, provides the dynamic range (DR) in excess of 60 dB and the minimum detectable signal (MDS) < -50 dBm. Unlike in [41,42] the detector input impedance is not compromised and at maximum frequency it is > 4 k having a negligible effect on the circuit under test (CUT). The detector is intended for on-chip calibration to tolerate PTV variations and ensure good measurement accuracy [43].…”

Section: Introductionmentioning

confidence: 99%

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Efficient Integrated Circuits for Wideband Wireless Transceivers

Duong

2016

Linköping Studies in Science and Technology. Dissertations

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The proliferation of portable communication devices combined with the relentless demand for higher data rates has spurred the development of wireless communication standards which can support wide signal bandwidths. Benefits of the complementary metal oxide semiconductor (CMOS) process such as high device speeds and low manufacturing cost have rendered it the technology of choice for implementing wideband wireless transceiver integrated circuits (ICs). This dissertation addresses the key challenges encountered in the design of wideband wireless transceiver ICs. It is divided into two parts. Part I describes the design of crucial circuit blocks such as a highly selective wideband radio frequency (RF) front-end and an on-chip test module which are typically found in wireless receivers. The design of high-speed, capacitive DACs for wireless transmitters is included in Part II. The first work in Part I is the design and implementation of a wideband RF frontend in 65-nm CMOS. To achieve blocker rejection comparable to surface-acousticwave (SAW) filters, the highly selective and tunable RF receiver utilizes impedance transformation filtering along with a two-stage architecture. It is well known that the low-noise amplifier (LNA) which forms the first front-end stage largely decides the receiver performance in terms of noise figure (NF) and linearity (IIP3/P1dB). The proposed LNA uses double cross-coupling technique to reduce NF while complementary derivative superposition (DS) and resistive feedback are employed to achieve high linearity. The resistive feedback also enhances input matching. In measurements, the front-end achieves performance comparable to SAW filters with blocker rejection greater than 38 dB, NF 3.2-5.2 dB, out-of-band IIP3 > +17 dBm and blocker P1dB > +5 dBm over a frequency range of 0.5-3 GHz. The second work in Part I is the design of an RF amplitude detector for on-chip test. As the complexity of RF ICs continues to grow, the task of testing and debugging Preface This Ph.D thesis presents my research work during the period January 2011 to January 2016 at the Division of Integrated Circuits and Systems (EKS), Department of Electrical Engineering (ISY), Linköping University, Sweden. I have spent 4 years (80% of the total 5 years) on research and course work of at least 90 Europen Credit Transfer System (ECTS). The 20% left which is 1 year is used for full-time teaching duties. The dissertation is mainly based on the following peer-reviewed journal articles and conference publications:

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“…26.4.2. A pseudo-differential amplitude detector [5] is used for the RFED. To increase the RFED gain, a 1:N external balun transformer, X1, is used, and the input transistors M1 and M2 are cross-coupled through the coupling capacitors C2 and C3.…”

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confidence: 99%

An interference-aware 5.8GHz wake-up radio for ETCS

Choi

Lee²,

Yun³

et al. 2012

2012 IEEE International Solid-State Circuits Conference

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Wake-up radios have been a popular transceiver architecture in recent years for battery-powered applications such as wireless body area networks (WBANs) [1], wireless sensor networks (WSNs) [2,3], and even electronic toll collection systems (ETCS) [4]. The most important consideration in implementing a wake-up receiver (WuRX) is low power dissipation while maximizing sensitivity. Because of this requirement of very low power, WuRX are usually designed by a simple RF envelope detector (RFED) consisting of Schottky diodes [1,3] or MOSFETs in the weak inversion region [2] without active filtering or amplification of the input signal. Therefore, the performance of the RFED itself is critical for attaining good sensitivity of the WuRX. Moreover, the poor filtering of the input signal renders the WuRX vulnerable to interferers from nearby terminals with high transmit power such as mobile phones and WiFi devices, and this can result in false wake-ups [1]. Although the RFED has very low power, a false wake-up will increase the power consumption of the wake-up radio as it will enable the powerhungry main transceiver.An RF SAW filter can be used in front of the RFED to reduce false wake-ups [2], but it has wider bandwidth in the GHz range and is not sufficient to reject interferers. Furthermore, its insertion loss degrades sensitivity. A narrowband BPF also can be used to remove interference after the RFED [3]. However, it is usually implemented by a passive R-C filter due to the requirement of low power, and also has poor selectivity [1,2]. To overcome these challenges of WuRX, a low-power, high-gain RFED and a low-power delay-based BPF (DBPF) that has a narrow and sharp frequency response that is sufficient to reject interferers are newly proposed in this paper. The IC reported here is a fully integrated wake-up radio for ETCS compliant with the GB/T 20851-2007 Chinese dedicated shortrange communication (DSRC) standard [4].

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A CMOS amplitude detector for RF-BIST and calibration

Cited by 12 publications

References 11 publications

A 27-MHz frequency shift keying wireless system resilient to in-band interference for wireless sensing applications

A 27-MHz frequency shift keying wireless system resilient to in-band interference for wireless sensing applications

Efficient Integrated Circuits for Wideband Wireless Transceivers

An interference-aware 5.8GHz wake-up radio for ETCS

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