High performance CPW embedded passive components using photoimageable thick film technology

Samanta, Kamal K.; Robertson, I.D.

doi:10.1109/eumc.2005.1608818

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…So forth, establishing the correct method is crucial to obtain accurate values of the dielectric parameters of the sample. Thereupon, different methods have been thoroughly studied [10,19,20] and the microstrip ring resonator method has been selected for our measurements. This method has been exploited for different configurations such as liquid crystal polymers [20][21][22][23].…”

Section: Methodsmentioning

confidence: 99%

“…Thereupon, different methods have been thoroughly studied [10,19,20] and the microstrip ring resonator method has been selected for our measurements. This method has been exploited for different configurations such as liquid crystal polymers [20][21][22][23]. For our study, to be able to characterize our samples, we have adapted the resonator ring method by adding grounded coplanar waveguide (GCPW) for microwave access as described below [24].…”

Section: Methodsmentioning

confidence: 99%

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New low loss soft thermoplastic blends for microwave applications

Sghaier¹,

Gibari²,

Guiffard³

2020

J. Phys. D: Appl. Phys.

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All organic soft dielectrics are growing more and more interest in the electronic industry owing to their light weight, low cost and the flexibility they yield compared to the rigid devices. In the specific field of microwave communicating devices planar printed (patch) antennas on a soft dielectric substrate are sought for their conformability and advantageous compactness. In this article, two soft thermoplastic elastomer blends based on polypropylene (PP) or lowdensity polyethylene (LDPE) were tested. The fabrication process and the established characterization steps have been fully presented. More specifically, in order to characterize the dielectric film up to 40 GHz, the microstrip ring resonator with coplanar waveguide access has been adapted to a new configuration specimen sample. The results of the characterizations obtained showed very encouraging performances for microwave applications. Indeed, the measured dielectric constant and loss tangent up to 40 GHz were found to be ε r ≈ 2.45 and tan δ ≈ 0.01 for both blends. The fabrication and the radiation characteristics of a patch antenna on a new performing PP or LDPEbased elastomer blends as the soft dielectric substrate was demonstrated and analysed. The proof of the concept of the investigated device consists of a microstrip patch antenna with an operation frequency of about 10 GHz. These dielectric features render the polyolefin based blends very promising as a soft material for microwave engineering, which is confirmed by the measured antenna properties: the gain, the directivity as well as the efficiency have been calculated from the measured radiation pattern and were recorded as 4.6 dB, 7.7 dB and 46% respectively for the rPP based blend and 4.8 dB, 8.1 dB and 51% for the LDPE based blend.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

New low loss soft thermoplastic blends for microwave applications

Sghaier¹,

Gibari²,

Guiffard³

2020

J. Phys. D: Appl. Phys.

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“…Coplanar waveguides (CPWs) on dielectric substrates were introduced in 1969 [11] and they are commonly used in microwave monolithic integrated circuits (MMICs) [12]. A multitude of CPW components have emerged with high performances: CPW inductors [13][14][15], CPW capacitors [16,17], microstrip lines and slotlines [18]. CPW components allow fast and inexpensive fabrication and characterization of RF circuits such as filters, couplers and amplifiers [19].…”

Section: Capacitance Variationsmentioning

confidence: 99%

Design and fabrication of a continuously tuned capacitor by microfluidic actuation

Habbachi

Boussetta

Boukabache

et al. 2018

J. Micromech. Microeng.

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This paper presents the design and the fabrication of a continuously tunable RF MEMS capacitor using micro fluidics as a tuning parameter. The impedance variation principle is based on the modification of the capacitor gap permittivity produced by the presence of deionized water and its displacements in a channel inserted between electrodes. In addition, the electric field distribution changes in equiponderant way according to the DI water positions in the channel. This change modifies the capacitive coupling, the stored energy and consequently the self-resonant frequency. The fabrication process is based on two parts: metallic paths having a spiral form, and obtained by electroplating a 7 µm thick gold layer to constitute electrodes; and fluidic channels, realized by super imposing two SU-8 films. The measurements show a non-linear variation of the capacitor value according to the water positions. The tuning range is very large, reaching up to 4650% for the capacitance, and 335% for the resonant frequency. However, the quality factor reaches Qmax = 79 at 550 MHz if the capacitor is empty and decreases with the fluid displacements to Qmin = 3.13.

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“…To keep the size minimum, the track width (W) was set to 25 ȝm keeping the spacing (S) at 100 ȝm. The design details of the inductor and MIM capacitor are described in [9]. To predict the behavior, as several high frequency phenomena like surface roughness, finite conductor thickness, etc., start to play a significant role, the equivalent circuit parameters were extracted for the equivalent circuit model described in [9].…”

Section: The Effect Of Dielectric Height and Ground Widthmentioning

confidence: 99%

The Effect of Dielectric Height and Ground Plane Width on Multilayer MCM FGCPW Lumped Elements

Samanta¹,

Robertson²

2008

2008 38th European Microwave Conference

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This paper investigates the effect of dielectric height and ground plane width on the performance of multilayer CPW transmission lines, lumped elements and circuits fabricated using photoimageable thick film technology. The effective dielectric constant and characteristic impedance are extracted to investigate the effect on transmission line dispersion. The equivalent circuit parameters for lumped elements are investigated for various dielectric thicknesses and ground plane widths. Finally, the practical effect of dielectric height is investigated for a 3GHz lumped element low pass filter.

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High performance CPW embedded passive components using photoimageable thick film technology

Cited by 6 publications

References 9 publications

New low loss soft thermoplastic blends for microwave applications

New low loss soft thermoplastic blends for microwave applications

Design and fabrication of a continuously tuned capacitor by microfluidic actuation

The Effect of Dielectric Height and Ground Plane Width on Multilayer MCM FGCPW Lumped Elements

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