| 1. |
- Hassona, Ahmed Adel, 1988, et al.
(author)
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Nongalvanic Generic Packaging Solution Demonstrated in a Fully Integrated D-Band Receiver
- 2020
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In: IEEE Transactions on Terahertz Science and Technology. - 2156-342X .- 2156-3446. ; 10:3, s. 321-330
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Journal article (peer-reviewed)abstract
- This article presents a packaging technique for monolithic microwave integrated circuits (MMIC) demonstrated in a fully integrated receiver (Rx) module at the D -band (110–170 GHz). The solution consists of an MMIC-to-waveguide transition realized using an on-chip probe mounted in the E -plane of a split-block waveguide module. An artificial magnetic conductor structure is implemented to suppress cavity modes and achieve better coupling from the waveguide to the probe. The transition's performance is experimentally verified using a back-to-back test chip, and measurement results show that the proposed packaging solution achieves a low insertion loss of only 0.7 dB and covers a very wide frequency range extending from 105 to 175 GHz. The proposed transition is also integrated with an in-phase/quadrature-phase (I/Q) Rx on the same chip. The Rx is realized in a 250-nm indium phosphide double heterojunction bipolar transistor technology and consists of a low-noise amplifier, an I/Q mixer, and a frequency tripler. Measurement results show that the Rx module achieves an average conversion gain of 23 dB across the frequency range of 110–145 GHz and has an average noise figure of 10.6 dB. The Rx MMIC has a dc power consumption of 440 mW and occupies an area of 1.6 × 1.6 mm 2 . This article addresses one of the main challenges in systems operating above 100 GHz and presents a fully integrated packaging solution that suits large integrated circuits and does not require any galvanic contacts nor impose any limitations on MMIC dimensions.
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| 2. |
- Strömbeck, Frida, 1990, et al.
(author)
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A 40 Gbps QAM-16 communication link using a 130 nm SiGe BiCMOS process
- 2022
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In: IEEE MTT-S International Microwave Symposium Digest. - 0149-645X. ; 2022-June, s. 1013-1016
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Conference paper (peer-reviewed)abstract
- In this work a high data rate transmitter and receiver link is presented using a 130 nm SiGe BiCMOS process. The communication link has demonstrated transmissions up to 40 Gbps QAM-16 at D-band (110-170 GHz) over a one meter polymer microwave fiber (PMF). The peak output power of the transmitter (Tx) is 3 dBm at 135 GHz and the 3-dB bandwidth of both Tx and receiver (Rx) is between 115 - 145 GHz, resulting in a 30 GHz bandwidth. Total chip area for Tx and Rx combined, including pads, is 4.2 mm2.
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| 3. |
- Vosoogh, Abbas, 1984, et al.
(author)
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A Compact Mass-producible E-band Bandpass Filter Based on Multi-layer Waveguide Technology
- 2020
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In: 14th European Conference on Antennas and Propagation, EuCAP 2020.
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Conference paper (peer-reviewed)abstract
- This paper presents the design, implementation and experimental validation of a bandpass filter for high-data rate point-to-point link applications at E-band. The proposed design is developed in multilayer waveguide (MLW) technology, where an air-filled waveguide transmission line is formed by stacking several unconnected thin metal plates. Our MLW bandpass filter is designed by combining low-pass and high-pass filtering structures, and consists of 19 separate metal layers. An array of glide-symmetric holes, which act as an electromagnetic band gap (EBG) structure, are used to prevent any possible field leakage due to the air gaps between the layers. The fabricated filter provides a bandpass from 71.5 to 76 GHz with measured return loss better than 15 dB, and insertion loss better than 1.3 dB. These results confirm the advantages of MLW technology for implementing ultra-compact bandpass filters showing low loss and potential for being mass-produced at millimeter-wave frequencies.
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| 4. |
- Yu, Weihua, et al.
(author)
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Substrateless Packaging for a D-Band MMIC Based on a Waveguide with a Glide-Symmetric EBG Hole Configuration
- 2022
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In: Sensors. - : MDPI AG. - 1424-8220. ; 22:17
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Journal article (peer-reviewed)abstract
- This paper presents a novel substrateless packaging solution for the D-band active e mixer MMIC module, using a waveguide line with a glide-symmetric periodic electromagnetic bandgap (EBG) hole configuration. The proposed packaging concept has the benefit of being able to control signal propagation behavior by using a cost-effective EBG hole configuration for millimeter-wave- and terahertz (THz)-frequency-band applications. Moreover, the mixer MMIC is connected to the proposed hollow rectangular waveguide line via a novel wire-bond wideband transition without using any intermediate substrate. A simple periodical nail structure is utilized to suppress the unwanted modes in the transition. Additionally, the presented solution does not impose any limitations on the chip's dimensions or shape. The packaged mixer module shows a return loss lower than 10 dB for LO (70-85 GHz) and RF (150-170 GHz) ports, achieving a better performance than that of traditional waveguide transitions. The module could be used as a transmitter or receiver, and the conversion loss shows good agreement in multiple samples. The proposed packaging solution has the advantages of satisfactory frequency performance, broadband adaptability, low production costs, and excellent repeatability for millimeter-wave- and THz-band systems, which would facilitate the commercialization of millimeter-wave and THz products.
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| 5. |
- An, Sining, 1991, et al.
(author)
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A D-band Dual-Mode Dynamic Frequency Divider in 130nm SiGe Technology
- 2020
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In: IEEE Microwave and Wireless Components Letters. - 1558-1764 .- 1531-1309. ; 30:12, s. 1169-1172
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Journal article (peer-reviewed)abstract
- In this work, a dual-mode (divide-by-2 and divide-by-3) dynamic frequency divider is presented. A tunable delay gated ring oscillator (TDGRO) topology is proposed for dual-mode operation and bandwidth extension. It uses a 130 nm gate length SiGe BiCMOS technology with ft and fmax of 250 GHz and 370 GHz, respectively. Verification shows that it works at W-band from 70 GHz to 114 GHz (47.8% bandwidth) for divide-by-2 and works at D-band from 105 GHz to 160 GHz (41.5% bandwidth) for divide-by-3. This divider can be used in integrated phase lock loops (PLLs) at millimeter-wave frequencies.
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| 6. |
- An, Sining, 1991, et al.
(author)
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Coded Pilot Assisted Baseband Receiver for High Data Rate Millimeter-Wave Communications
- 2020
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In: IEEE Transactions on Microwave Theory and Techniques. - 0018-9480 .- 1557-9670. ; 68:11, s. 4719-4727
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Journal article (peer-reviewed)abstract
- A coded pilot assisted high data rate millimeter-wave receiver topology is presented in this article. A low data rate and low power pseudorandom noise (pn) coded pilot signal is superimposed at the transmitter, and the receiver can use such pilot for carrier recovery (CR) and/or channel estimation regardless of modulation scheme or communication data rate. The proposed baseband receiver has an analog-digital hybrid structure where a low-cost digital signal processor is used. This structure requires only a low-cost analog-to-digital converter (ADC) with a sampling rate of 40 MSPS. A proof-of-concept communication link at E-band is demonstrated with 18 Gbps 64-quadrature amplitude modulation (QAM) and 24 Gbps 16-QAM.
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| 7. |
- An, Sining, 1991, et al.
(author)
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Micrometer Accuracy Phase Modulated Radar for Distance Measurement and Monitoring
- 2020
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In: IEEE Sensors Journal. - 1558-1748 .- 1530-437X. ; 20:6, s. 2919-2927
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Journal article (peer-reviewed)abstract
- An enhanced accuracy random binary phase modulated radar is proposed. It can be used in high accuracy monitoring in manufacturing. Compared with the traditional high accuracy radar using frequency modulated continuous wave (FMCW), the proposed radar system can be used in a multi-user scenario without occupying more bandwidth. A two-step distance estimation method is introduced to estimate the distance. First, the distance estimation accuracy is narrowed down to a half carrier wavelength by analyzing the envelope of the phase modulated signal. Then the carrier phase information increases the distance accuracy to several micrometers. An equalization method is introduced to solve the I/Q imbalance problem. The proposed radar system is demonstrated at a carrier frequency of 80 GHz with a bandwidth of 2 GHz. The measured distance error was within ±7 μm. In addition, a high measurement repetition rate of 500 kHz was reached which is suitable for real-time monitoring in automatic manufacturing.
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| 8. |
- An, Sining, 1991, et al.
(author)
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Millimeter-Wave Multi-Channel Backscatter Communication and Ranging with an FMCW Radar
- 2022
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In: Sensors. - : MDPI AG. - 1424-8220. ; 22:19
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Journal article (peer-reviewed)abstract
- A multi-channel backscatter communication and radar sensing system is proposed and demonstrated in this paper. Frequency modulated continuous wave (FMCW) radar ranging is integrated with simultaneous uplink data transmission from a self-packaged active radio frequency (RF) tag. A novel package solution is proposed for the RF tag. With the proposed package, the RF tag can transmit a 32-QAM signal up to 2.5 Gbps and QPSK signal up to 8 Gbps. For a multi-tag scenario, we proposed using spread spectrum code to separate the data from each tag. In this case, tags can be placed at arbitrary locations without adjacent channel interference. Proof-of-concept simulations and measurements are demonstrated. A 625 Mbps data rate is achieved in a dual-tag scenario for two tags.
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| 9. |
- Bao, Husileng, 1991, et al.
(author)
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Automatic Distributed MIMO Testbed for beyond 5G Communication Experiments
- 2021
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In: IEEE MTT-S International Microwave Symposium Digest. - 0149-645X. ; 2021-June, s. 697-700
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Conference paper (peer-reviewed)abstract
- This paper demonstrates an automated testbed suitable for beyond-5G distributed MIMO experiments, where bandwidth, number of transmitters and precoding methods are flexible and configured through a central unit. This is based on an all-digital radio-over-fiber approach to communication through 12 fully coherent, low-complexity remote radio transmitters. An automated robot receiver is implemented to facilitate efficient communication data collection in realistic environments. Using the proposed system, co-located and distributed MIMO communication antenna configurations are compared in a real in-door environment. The results show that distributed MIMO provides more significantly more uniform power distribution and better overall MIMO capacity compared to co-located MIMO.
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| 10. |
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