A Broadband-Matched Load Using Multiwalled Carbon Nanotubes

Chuang, Jiun-Kai; Fang, Ruei-Ying; Li, Tzu-Hao; Lee, Yuan-Chun; Wang, Chun-Long; Lee, Kuei‐Yi

doi:10.1109/tnano.2013.2285576

Cited by 5 publications

(2 citation statements)

References 15 publications

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“…However, these approaches require an accurate model for the parasitics of the resistive elements and they do not compensate for the manufacturing variations in the value of the intrinsic resistor, limiting their usefulness. More recently, the emerging use of carbon nanotubes [10] and 2-D inkjet printing [11] have also facilitated unconventional methods to fabricate wideband loads.…”

Section: Introductionmentioning

confidence: 99%

Accurate and Process-Tolerant Resistive Load

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2020

IEEE Trans. Microwave Theory Techn.

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Resistive terminations cannot preserve high-quality matching at high frequencies due to the parasitic effects of the nonideal resistor. Moreover, resistance values of the termination resistors in integrated circuits are subject to process variations. Therefore, it is difficult to obtain accurate and process-tolerant terminations that are crucial for high performance in microwave circuits. We propose a new resistive network that compensates for the high-frequency parasitic effects of the resistors to improve the bandwidth of the termination. In addition to maintaining accuracy, the presented network provides tolerance to variation in the resistor values. The accuracy and tolerance of the proposed structure is analytically shown and experimentally verified by three test structures at the X-band fabricated on a GaN technology. The experimental results show that a small size and wideband 50-load with a return loss better than 25 dB can be obtained, while the resistor value changes ±30%.

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Section: Introductionmentioning

confidence: 99%

Accurate and Process-Tolerant Resistive Load

Sütbaş

Özbay

Atalar

2020

IEEE Trans. Microwave Theory Techn.

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“…The planar lumped resister matched load developed in [2] performs quite well from dc to 20 GHz; but it is difficult to operate at higher frequency owing to the increased parasitic effects of the lumped resistor. Moreover, the resistive thin film (RTF) and carbon nanotubes have been utilized to enhance bandwidth of matched loads [3,4]. A NiCr alloys coaxial matched load even achieves a benchmark frequency range from dc to 110 GHz [5].…”

Section: Introductionmentioning

confidence: 99%

Matched loads using substrate integrated waveguide and shaped absorbing material for KA‐/Q‐band applications

Huang

Peng

Jiang

et al. 2017

Micro & Optical Tech Letters

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Two planar matched loads using substrate integrated waveguide (SIW) and absorbing material are presented. The magneticloss absorbing material is cut into horn and concave shapes and loaded into SIW sections respectively to form two SIW matched loads. Measured results of the proposed SIW matched loads show comparable agreement with their corresponding simulations. Moreover, the proposed matched loads exhibit fractional bandwidths of 46.1 and 68%, respectively with a return loss over 18.5 dB, as well as system integration capability, low complexity and low cost, which demonstrate their suitability for Ka-and Q-band applications. Figure 3 Detailed configurations and optimized dimensions of (a) horn-shaped and (b) concave-shaped SIW matched loads. [Color figure can be viewed at wileyonlinelibrary.com]

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