CAD Models of Connectors and Transitions used in Hybrid Microwave Integrated Circuits

Chramiec, J.; Janiczak, B.J.; Komisarczuk, J.; Piotrowski, J.; Gwarek, W.

doi:10.1109/euma.1998.338032

Cited by 11 publications

(7 citation statements)

References 1 publication

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“…As can be observed, the measured sensitivity decreases with the increase of the frequency, which will result in the increased error between the presented 2D model and the measurements at high frequency. The reason is that when the frequency is high, the electromagnetic coupling loss of the CPW transmission line and the parasitic loss of the load resistor become larger [17,18].…”

Section: Microwave Performance Measurementmentioning

confidence: 99%

Modeling of the terminating-type power sensors fabricated by GaAs MMIC process

Yi¹,

Liao²,

Wu³

2013

J. Micromech. Microeng.

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In this paper, a two-dimensional (2D) model of the terminating-type power sensor is established under different input powers. The 2D heat transfer equation is applied to describe the temperature distribution, and Fourier series is used to obtain the solution based on the boundary conditions. In order to demonstrate the validity of the 2D model, finite-element method (FEM) simulation using ANSYS software was performed. The sensitivity from the 2D model and FEM is 0.25 mV mW −1 and 0.28 mV mW −1 respectively, while the sensitivity from the 1D model is 0.34 mV mW −1 , which indicates that the presented 2D model is closer to the simulation than the 1D model. The terminating-type power sensor was designed and fabricated by MEMS technology and the GaAs MMIC process. The measured return loss is less than −26 dB for a frequency up to 10 GHz. The power measurement was performed and a good linearity of the output thermovoltage with respect to the input power is obtained. The measured sensitivity is close to 0.26 mV mW −1 , 0.23 mV mW −1 and 0.16 mV mW −1 at 0.1, 1 and 10 GHz, respectively. Moreover, the frequency dependence measurement demonstrates that the measured thermovoltage decreases with increasing the frequency. The measurements demonstrate that the measured results agree with the presented 2D model for low frequency while the measured thermovoltage deviates from the expectation at high frequency. The reason is that the electromagnetic coupling loss of the coplanar waveguide and the parasitic loss of the load resistor become higher at high frequency.

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Section: Microwave Performance Measurementmentioning

confidence: 99%

Modeling of the terminating-type power sensors fabricated by GaAs MMIC process

Yi¹,

Liao²,

Wu³

2013

J. Micromech. Microeng.

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“…As the frequency increases, the CPW suffers from dispersion loss caused by air-dielectric material discontinuity which is inherent to substrate-supported transmission lines. In addition, in the microwave frequency range [14], the load resistor is not a pure resistor due to the parasitic effect, which includes parasitic capacitance and parasitic inductance. The capacitance and the inductance will store some microwave power.…”

Section: Frequency Dependence Measurementmentioning

confidence: 99%

A terminating-type MEMS microwave power sensor and its amplification system

Wang¹,

Liao²

2010

J. Micromech. Microeng.

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A terminating-type MEMS microwave power sensor and its amplification system are presented in this paper. A SPICE model is introduced to simulate temperature distribution of this power sensor, and the model has a reference value to estimate the sensitivity of the power sensor. This power sensor is designed and fabricated using MEMS technology and the GaAs MMIC process. It is measured in the frequency range up to 20 GHz with an input power in the 0 to 50 mW range. Over the 50 mW dynamic range, the sensitivity is about 0.29, 0.24 and 0.22 mV mW −1 at 5, 10 and 15 GHz, respectively. The output voltage of the power sensor ranges from 0.64 to 15.2 mV at 5 GHz. After amplification, the output voltage ranges from 0.19 to 6.56 V. The amplification gain is about 437.5, and the sensitivity is increased to 1274 mV mW −1 . At 15 GHz, the output voltage of the power sensor ranges from 0.57 to 11.69 mV. After amplification, the output voltage ranges from 0.146 to 5.02 V. The amplification gain is about 438, and the sensitivity is increased to 974.8 mV mW −1 . The measurement results show that the amplification system can amplify the output weak signal of the power sensor well and have good linearity.

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“…Modeling of transition A has been done following the procedure described in Ref. 6. Stripline model available in Ref.…”

Section: Structure Of Balun and Modeling Proceduresmentioning

confidence: 99%

A novel compact broadband 5–35 GHz balun

Chramiec

Janiczak

Kitliński

2007

Micro & Optical Tech Letters

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In this study, we investigated the yield and physicochemical properties of the high molecular weight extracellular polymeric substance (HMW–EPS) produced by Halomonas sp. strain TG39 when grown on different types and ratios of substrates. Glucose (1% w/v) and a peptone/yeast extract ratio of 5.1 (0.6% w/v final concentration) yielded an EPS fraction (HMW‐glucose) exhibiting the highest anionic activity (20.5) and specific emulsifying activity (EI24 = 100%) compared to EPS produced by cells grown on mannitol, sucrose, malt extract or no carbon source. The HMW–EPS fractions were capable of binding ≈255–464 mg of methylene blue (MB) per gram of EPS, which represents the highest reported binding of MB by a bacterial EPS. A comparative evaluation of these properties to those of commercial hydrocolloids indicated that the combined effect of protein and anionic residues of the HMW–EPS contributed to its ability to emulsify n‐hexadecane. Liquid chromatography revealed the HMW‐glucose EPS to be a heterogeneous polymer with a polydispersity index of 1.8. This work presents evidence of a correlation between the anionic nature and protein content of bacterial EPS with its emulsifying qualities, and identifies EPS produced by strain TG39 as a high MB‐binding bacterial sorbant with potential biotechnological application. Biotechnol. Bioeng. 2009;103: 207–216. © 2008 Wiley Periodicals, Inc.

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CAD Models of Connectors and Transitions used in Hybrid Microwave Integrated Circuits

Cited by 11 publications

References 1 publication

Modeling of the terminating-type power sensors fabricated by GaAs MMIC process

Modeling of the terminating-type power sensors fabricated by GaAs MMIC process

A terminating-type MEMS microwave power sensor and its amplification system

A novel compact broadband 5–35 GHz balun

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