A Novel p-i-n Inductor for Tunable Wideband Matching Network Application

Lee, Chie-In; Lin, Wei‐Cheng

doi:10.1109/ted.2013.2271053

Cited by 14 publications

(9 citation statements)

References 23 publications

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“…From the data, we can observe that the proposed impedance matcher has a good performance in terms of stability and impedance matching, with the added benefit of the miniaturised size. [10] diode + + + 0.2-1 Easy [11] pin inductor --- [12] transistor + + + 0.4-10 Easy [13,14] RF…”

Section: Resultsmentioning

confidence: 99%

“…Then, aluminium electroplating is used to increase the thickness of the previous layer, and therefore originating the bridge with the desired thickness. (11): removing the photoresist that served as a support for the bridge's deposition -from this step results a bridge suspended above transmission lines that is supported by nickel columns.…”

Section: Fabrication Processmentioning

confidence: 99%

See 1 more Smart Citation

Modelling, design and fabrication of a novel reconfigurable ultra‐wide‐band impedance matching based on RF MEMS technology

Jmai

Dinis²,

Anacleto³

et al. 2019

IET Circuits, Devices & Systems

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This study proposes an adaptive impedance-matching network with tremendously reduced dimensions and presents its fabrication process. The proposed radio-frequency micro-electromechanical system (RF MEMS) device is based on a coplanar waveguide design and relies on suspended bridges for impedance tuning. The tuning is controlled by a variable applied DC voltage to the bridges. Preliminary tests validate the device's operation mechanism, and simulations were performed on both the mechanical aspects of the device (bridge gap manipulation) and tuning capabilities. This device presents the possibility of operating in a wide band of frequencies, namely [1-6] GHz, and for load impedances in the interval of [30-90] Ω for the real part and [−10-30] for the imaginary part. The device's resonant frequency and its bandwidth can be modified easily by changing the bridge gap in the RF MEMS.

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Section: Resultsmentioning

confidence: 99%

Section: Fabrication Processmentioning

confidence: 99%

Modelling, design and fabrication of a novel reconfigurable ultra‐wide‐band impedance matching based on RF MEMS technology

Jmai

Dinis²,

Anacleto³

et al. 2019

IET Circuits, Devices & Systems

View full text Add to dashboard Cite

show abstract

“…Because the fixtured devices used are small in [18] and the operating frequency is low in [19], the open-short method is still valid in our previous research. However, the characterization for large-sized DUTs at high frequencies is necessary especially in the areas of high-power and high-frequency device modeling.…”

Section: Introductionmentioning

confidence: 96%

“…Our previous research was devoted to the small-signal model parameter extraction of MOSFETs in the breakdown regime [18] and the characterization of a wideband tunable matching network up to 10 GHz [19] based on a open-short deembedding method. Because the fixtured devices used are small in [18] and the operating frequency is low in [19], the open-short method is still valid in our previous research.…”

Section: Introductionmentioning

confidence: 99%

A Simple and Accurate Pad-Thru-Short Deembedding Method Based on Systematic Analysis for RF Device Characterization

Lee

Lin

2015

IEEE Trans. Electron Devices

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In this paper, a practical scalable cascade-based pad-thru-short deembedding methodology with the characteristic of wave propagation considered is presented for RF device characterization for the first time. Through an analysis, it is found that nonshielding thru and leg lines operate in quasi-transverse electromagnetic and quasi-transverse magnetic modes of wave propagation, respectively. To subtract the leg effect in different lengths based on transmission line parameters without shielding, this difference in operating modes between the thru and leg is addressed in this new method. Compared with a conventional scalable method with shielding, the presented method without violating the process design rules can achieve comparable results. Deembedding accuracy can be maintained without using numerous dummies. Therefore, this scalable deembedding method with simpler layout design and fabrication process is more practical for automatic ON-wafer measurements of different sized devices.

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“…Other works about silicon devices focused on p–n junction mixed breakdown characterization and MOSFET breakdown modeling . This concept was applied to the implementation of a wideband tunable matching network suitable for RF PA applications . In this article, a RF direct down‐conversion Doppler radar system comprising a low power PA with the power management technique has been realized, and experimental verification of this radar system considering simultaneous switching noise has been conducted.…”

Section: Introductionmentioning

confidence: 99%

Direct conversion Doppler radar vital sign detection system using power management technique

Lee

Lin

Chen

et al. 2014

Micro & Optical Tech Letters

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Furthermore, the tunable operation frequency range of the proposed impulse generator is experimentally studied. This impulse generator can work well at any input frequency around 1-15 MHz. Figure 4 displays the experimental results of the final output impulses at operation frequencies of 1, 5, 10, and 15 MHz. It can be recognized that the lower frequency, the slightly higher amplitude. This is attributed to the recovery time of the RC-circuit of the collector resistance and the output coupling capacitor. When frequency is higher the period is shorter so that the output coupling capacitor has shorter time for recovery. Consequently, the output amplitude is lower. Therefore, by adjusting the values of the collector resistance and the output coupling capacitor, we can broaden the working frequency range. In addition, the fabricated impulse generator was checked by HP 8593E RF spectrum analyzer with generated high-order harmonic up to 10 GHz.With such output UWB short impulses, the impulse generator can be used for many practical applications in electronics and optics. By utilizing the fast leading edge characteristic of the generated short impulses for driving actively mode-locked fiber lasers, we may anticipate a possible generation of shorter optical pulses than reported in [6]. This issue is currently under investigation and will be reported elsewhere. CONCLUSIONIn this article, we have described a method for generating UWB picosecond impulses with fast fall-time based on the fast switchon characteristic of a broadband bipolar transistor and the edge compression characteristic of a NLTL comb generator. The experimental results showed that the generated short impulses had a pulse-width of about 725 ps, a fall-time of 180 ps, and a peak power of 1 W at 50 X. ABSTRACT: This article is the first to present a low power consumption direct conversion Doppler radar vital sign detection system using a power management technique to detect biomedical signals. The optimal pulse bias with simultaneous switching noise considered was designed to decrease power consumption of the sensor. A noncontact vital sign detection measurement using the optimal pulse bias was performed on a human subject. Based on experimental results, the presented simple and low power system can accurately detect human cardiopulmonary activity, including respiration and heartbeat. Calculated physiological signal amplitudes based on a spectral analysis validates the detection result from presented work. When compared with the sensor using a power amplifier, the proposed sensor can achieve low power dissipation for biomedical monitoring and green energy applications.

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A Novel p-i-n Inductor for Tunable Wideband Matching Network Application

Cited by 14 publications

References 23 publications

Modelling, design and fabrication of a novel reconfigurable ultra‐wide‐band impedance matching based on RF MEMS technology

Modelling, design and fabrication of a novel reconfigurable ultra‐wide‐band impedance matching based on RF MEMS technology

A Simple and Accurate Pad-Thru-Short Deembedding Method Based on Systematic Analysis for RF Device Characterization

Direct conversion Doppler radar vital sign detection system using power management technique

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