Performance of Cu‐ and Ag‐based microstrips up to millimetre wave frequencies

Kemppinen, E.; Mikkonen, Petri; Collander, Paul; Leppävuori, S.

doi:10.1108/13565369810370319

Cited by 7 publications

(4 citation statements)

References 6 publications

(5 reference statements)

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“…The presence of radiation was verified by electromagnetic simulator, HP Momentum. Typically, the measured values of the attenuation coefficient of the microstrip transmission lines have been obtained to be larger than the calculated ones [11].…”

Section: Resultsmentioning

confidence: 98%

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Effective permittivity and attenuation coefficient of microstrip transmission line determined by 1-port and 2-port measuring methods

Kemppinen

1999

Meas. Sci. Technol.

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Both 1-port and 2-port measuring methods have been demonstrated and compared to determine the real part of the frequency-dependent effective relative permittivity, re (f ), of microstrip lines fabricated on an alumina substrate. Signal flow diagram analysis has been used to derive equations from which re (f ) was calculated at discrete frequencies for the substrate with a known dielectric constant, r = 9.5. Both methods gave similar results for re (f ) from 45 MHz to 50 GHz. In addition, the measured frequency dependence of re (f ) was in agreement with the Kirschning-Jansen dispersion model within better than 2%. From the measured S -parameter data it was also possible to determine approximately the attenuation coefficient of the microstrips. Measured values obtained by the 2-port method were about 1.5-2 times the calculated values whereas the 1-port method suffered from radiation loss at the open end of the microstrips in the millimetre wave region. Both 1-port and 2-port methods can be used, for example, for quality checking purposes to verify how well the r value of the substrate material employed is within the specified range in a broad frequency band. However, the 1-port method can be more easily used to determine r of the substrate material at low microwave frequencies because it is faster than the 2-port method, the test structure is simpler and the calibration routine is easier to perform.

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Section: Resultsmentioning

confidence: 98%

“…Microstrip lines made on 95% alumina substrates were manufactured using the direct copper bond method (AIT, England) with subsequent etching [11]. Thus, the conductivity of copper was expected to be very close to the bulk copper conductivity, σ Cu = 5.85 × 10 7 S m −1 [12].…”

Section: Test Circuits and Measuring Methodsmentioning

confidence: 99%

Effective permittivity and attenuation coefficient of microstrip transmission line determined by 1-port and 2-port measuring methods

Kemppinen

1999

Meas. Sci. Technol.

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“…[ 138 ] Gravure is capable of printing high‐frequency transmission lines up to 40GHz using silver and copper inks. [ 286 ] It is possible to manufacture multilayer films with this technique in multiple gravure cylinders in a series configuration. Making a hybrid line with other roll‐to‐roll(R2R) configuration techniques, e.g., screen printing, is also possible.…”

Section: Printed Electronics Techniques Applications In Energy Harves...mentioning

confidence: 99%

Printed Electronics in Radiofrequency Energy Harvesters and Wireless Power Transfer Rectennas for IoT Applications

Skarżyński

Słoma

2023

Adv Elect Materials

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The Internet of Things is currently one of the fastest-growing branches in electronics. The development of energy storage systems and the miniaturization of dedicated printed circuit boards significantly influence that growth. However, the need for batteries and traditional printed circuit boards still limits devices' minimum size, weight, and cost, narrowing the application area. Energy harvesters and wireless power transfer systems fabricated with printed electronics can significantly reduce such devices' weight, size, and cost. Printed electronics technology provides scalable tools for many electronics applications, shortening the validation time and enabling new low-cost or disposable solutions on lightweight and flexible substrates embedded inside 3D printed structures and directly on device housings. Energy harvesting and wireless power transfer systems in electronic devices can provide enough power to minimize battery capacity and size or even eliminate the need for batteries in low-power applications. This review presents an adaptation of printed electronics technology in the fabrication of radio frequency energy harvesters and wireless power transfer rectennas for IoT applications. Last, perspectives for development towards greater integration with microsystems, transient electronics with ecofriendly materials, adaptation for next-generation telecommunication systems, and 3D structural electronics solutions are briefly discussed.

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“…Traditional thick film technology was unable to compete with thin film technology considering microwave specifications due to poor line resolution and high losses of thick films. Rapid development in novel thick-film material systems and advanced thick film circuit patterning techniques have changed this view and proved that thick film technology reaches beyond former limitations (Barnwell et al, 1998;Barnwell and O'Neil, 1997;Kemppinen et al, 1997).…”

Section: Introductionmentioning

confidence: 99%

Low cost high performance microwave structures fabricated by advanced thick film techniques

Dziurdzia

Nowak

Cież³

et al. 1999

Microelectronics International

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The paper presents the application of two advanced thick‐film techniques: etching of fired thick‐films and photoimaging of photosensitive thick‐films for fabrication bandpass microwave filters operating in the frequency range from 6 to 14 GHz. Modified screen printing through ultra‐thin calendered screens is used for comparative goals. Advanced techniques are combined with novel thick‐film conductors including photosensitive pastes and etchable pastes.

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Performance of Cu‐ and Ag‐based microstrips up to millimetre wave frequencies

Cited by 7 publications

References 6 publications

Effective permittivity and attenuation coefficient of microstrip transmission line determined by 1-port and 2-port measuring methods

Effective permittivity and attenuation coefficient of microstrip transmission line determined by 1-port and 2-port measuring methods

Printed Electronics in Radiofrequency Energy Harvesters and Wireless Power Transfer Rectennas for IoT Applications

Low cost high performance microwave structures fabricated by advanced thick film techniques

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