A Compact Integration of a 77 GHz FMCW Radar System Using CMOS Transmitter and Receiver Adopting On-Chip Monopole Feeder

Kwon, Ohyun; Cui, Chenglin; Kim, Jun-Seong; Park, Jae-Hyun; Song, Reem; Kim, Byung‐Sung

doi:10.1109/access.2018.2890268

Cited by 15 publications

(15 citation statements)

References 31 publications

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“…11, the conversion gain has a peak of 30.1 dB at 78.75 GHz and a 3 dB bandwidth of 77.5 to 82 GHz. Rx noise figure (NF) was roughly estimated using the spectrum analyzer as in the previous work [5]. The measured NF is 13 dB at 1 MHz IF signal.…”

Section: Tx and Rx Measurement Resultsmentioning

confidence: 99%

“…Their architectures are shown in Fig. 1, similar to those of the previous works [5], [9]. However, all circuit blocks, including an low noise amplifier (LNA), power amplifier (PA), and frequency multiplier, have been newly designed for a wide bandwidth of 5 GHz.…”

Section: Circuit Designmentioning

confidence: 88%

“…Although the operation of the seven-push multiplier is similar to that of the previous work [11], this work newly adds pulse generators to reduce power consumption. In the previous work, the adder was driven by 50% duty pulse directly buffered from the ring OSC [5]. It consumes a lot of currents because every common source (CS) field-effect transistor (FET) in the adder carries the current during the half period of the reference signal with a little phase offset.…”

Section: A Frequency Multipliermentioning

confidence: 99%

“…Compared to a low-loss substrate for mm-wave applications such as liquid-crystal polymers [4], ceramics, and RT/Duriod [5], a low-cost FR-4 substrate has not been an option to implement mm-wave front-end systems. FR-4 substrate has good mechanical and electrical properties.…”

Section: Introductionmentioning

confidence: 99%

“…1. The series patch array antenna on FR-4 substrate is directly fed from the backside through aperture coupling by on-chip feeders on Tx and Rx chips developed in the previous work [5]. These Tx and Rx chips are newly developed for highratio frequency multiplication and wideband operation using a 65-nm low-power (LP) RF CMOS process.…”

Section: Introductionmentioning

confidence: 99%

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79 GHz Active Array FMCW Radar System on Low-Cost FR-4 Substrates

Kim

Shin

et al. 2020

IEEE Access

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This work, for the first time to our best knowledge, presents a W-band multi-channel frequency-modulated continuous-wave (FMCW) radar system on low-cost FR-4 substrates. A center-fed patch array antenna on an FR-4 substrate can achieve a maximum gain of 10.8 dBi. It is enabled by aperture coupled feeding using an on-chip feeder implemented on a CMOS radar transmitter (Tx) and receiver (Rx). The proposed radar system consists of one Tx and four Rx channels placed in the back cavity of a microstrip array antenna like an active array antenna system. Additionally, Tx and Rx chipsets include a wideband frequency multiplier with high multiplication ratio of 63, making it easy to distribute reference FMCW waveform synthesized at a very low frequency about 1.25 GHz for 79 GHz output using direct digital synthesis (DDS). Extending the number of channels and implementing various waveforms can be easily accomplished with very good phase noise. The functionality of the proposed radar system on low-cost substrates is confirmed by distance and angle measurements.

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Section: Tx and Rx Measurement Resultsmentioning

confidence: 99%

Section: Circuit Designmentioning

confidence: 88%

Section: A Frequency Multipliermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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79 GHz Active Array FMCW Radar System on Low-Cost FR-4 Substrates

Kim

Shin

et al. 2020

IEEE Access

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The Potentials, Challenges, and Future Directions of On-Chip-Antennas for Emerging Wireless Applications—A Comprehensive Survey

et al. 2019

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The ever-growing demand for low power, high performance, cost-effective, low-profile, and highly integrated wireless systems for emerging applications has triggered the need for the enormous innovations in wireless transceiver systems, components, architectures and technologies. This is especially valid for the antenna which is an integral component of the wireless transceiver systems and contributes significantly in determining their overall performance. Antenna-on-Chip (AoC) is an alternative antenna technology, which has drawn a substantial attention in recent days because of its various benefits over off-chip antenna technology. A few of these benefits include miniaturization, low power, low cost, and high integration of the wireless modules. Motivated by these valuable advantages and to unveil the true potential of the AoCs, this article presents, for the first time, a comprehensive survey of the suitability, advantages, and challenges of the AoCs for the emerging wireless applications such as 5th generation (5G) Wireless Systems, Internet-of-Things (IoT) Wireless Devices and Systems, Wireless Sensor Networks (WSNs), Wireless Interconnects, Wireless Energy Transfer, Radio Frequency (RF) Energy Harvesting, Biomedical Implants, Unmanned Aerial Vehicles (UAVs), Autonomous vehicles, Innovative characterization methods for Integrated Circuits (ICs) and Antennas, and Smart City. In addition, this article presents the current stateof-the-art of the AoC's applications by classifying their applications in Millimeter-Wave (MM-Wave) band, Terahertz (THz) band, and low-frequency bands. The article also investigates and describes some useful methods for the mitigation of the challenges and issues posed by the emerging applications for the realization of the AoCs in a systematic manner. A concise description of the future directions of the AoCs with respect to each emerging application is also a part of this article. It is expected that this well-structured and organized survey will not only act as an excellent source of scholarship for the relevant research community, but also open up a world of novel research opportunities.

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A highly integrated E-band radar

Wen²

2020

2020 9th Asia-Pacific Conference on Antennas and Propagation (APCAP)

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A Compact Integration of a 77 GHz FMCW Radar System Using CMOS Transmitter and Receiver Adopting On-Chip Monopole Feeder

Cited by 15 publications

References 31 publications

79 GHz Active Array FMCW Radar System on Low-Cost FR-4 Substrates

79 GHz Active Array FMCW Radar System on Low-Cost FR-4 Substrates

The Potentials, Challenges, and Future Directions of On-Chip-Antennas for Emerging Wireless Applications—A Comprehensive Survey

A highly integrated E-band radar

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