A novel reconfigurable DGS cell for multi-stopband filter on CPW technology

El-Shaarawy, Heba B.; Coccetti, Fabio; Plana, R.; El-Said, Mostafa; Hashish, Essam A.

doi:10.1109/apmc.2008.4958689

Cited by 11 publications

(9 citation statements)

References 5 publications

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“…A shift in the resonance frequencies of the transmission zeros, between the measurement results with PIN diodes, and simulation and measurement results reported in [14], where diodes have been modeled as open and short circuits, can be observed. The effect of the diode has not been initially considered, to facilitate obtaining clear design rules for the transmission zeros using the slotline design equations.…”

Section: Discussionmentioning

confidence: 61%

“…As a first iteration, we modeled the diodes as ideal ones, i.e., the diodes are modeled as short or open circuits, where simulation and measurement results for the three different diode configurations have been reported in [14]. In this article, we give the equivalent circuit model of the structure in each configuration, and we present the measurement results when PIN diodes are used for the sake of reconfigurability in the fabrication of the DGS cell and complete explanation for the obtained measurement results.…”

Section: Introductionmentioning

confidence: 99%

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Reconfigurable defected ground structure cell using PIN diodes on Coplanar Waveguide technology

El-Shaarawy

Coccetti

Plana

et al. 2010

Micro & Optical Tech Letters

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whereas in the proposed VCO, the equivalent capacitance of the varacter and CPW resonator will decrease, which results in the higher FTR of the proposed VCO. Table 1 shows the comparison of the parameters of the proposed VCO using on-chip CPW resonator with VCO employing LC-resonator. From the table, it is noted that the VCO using CPW resonator has advantages in terms of chip size and frequency-tuning range (FTR) and comparable phase noise, and chip size is 20% less than that of the LC-VCO. Please note that the LC-VCO presented here was also designed and fabricated in the same technology by the authors for comparison purpose. CONCLUSIONA 5 GHz-band VCO employing on-chip CPW resonator instead of LC-tank resonator was proposed, designed, and fabricated using TSMC 0.18 lm CMOS technology. The advantages of employing CPW resonator is the wide frequency-tuning range, and it also saves about 20% of chip size. The measured phase noise of the proposed VCO is comparable to the LC-VCO. Furthermore, the CPW resonator in meander structure can be designed to exploit the vacant space of the layout so the chip size can be further reduced. ACKNOWLEDGMENTS

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Section: Discussionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

Reconfigurable defected ground structure cell using PIN diodes on Coplanar Waveguide technology

El-Shaarawy

Coccetti

Plana

et al. 2010

Micro & Optical Tech Letters

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“…To the authors' knowledge, there is limited research in this area [8], which shows great promise for using DGS to achieve slowwave and filtering effects in millimeter-wave circuits. We have shown how unit cell and cascaded dumbbell and spiral DGS operate at millimeter-wave frequencies on low-loss substrates.…”

Section: Discussionmentioning

confidence: 99%

Silicon integrated defected ground structures

Schlieter

Henderson

2010

2010 Topical Meeting on Silicon Monolithic Integrated Circuits in RF Systems (SiRF)

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In this paper we study the impact of two common defected ground structures fabricated in finite ground coplanar waveguide on silicon and alumina substrates useful for monolithic and hybrid designs. The single defects resonate at 30GHz and have bandwidth differences due to the nature and size of the defect. On-wafer measurements up to 40GHz are included for the silicon designs and show good agreement with simulation.

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“…Many techniques have been used to reduce the size of antenna, such as using dielectric substrates with high permittivity [12], applying resistive or reactive loading [13], utilizing strategically positioned notches on the patch antenna [14], or increasing the electrical length of antenna by optimizing its shape [15], namely, electromagnetic bandgap (EBG) structures [16,17], DGS and DMS [18,19], because of their interesting properties of miniature size, suppression of surface waves and arbitrary stopbands.…”

Section: Defected Microstrip Structurementioning

confidence: 99%

“…DGS can be used for size reduction which is studied in [8], harmonic suppression and etc. [19,20]. But the radiation from the ground plane is the major constraint to design a DGS based circuit.…”

Section: Defected Microstrip Structurementioning

confidence: 99%

Miniaturized Microstrip Patch Antenna With Spiral Defected Microstrip Structure

Elftouh¹,

Touhami²,

Adnane³

2015

PIER Letters

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Abstract-Use of discontinuities in microstrip lines is currently employed to improve the performance of different passive circuits, including size reduction of amplifiers, enhancement of filter characteristics and applications to suppress harmonics in patch antennas. This paper presents an improved method of size reduction of a microstrip antenna using Defected Microstrip Structure (DMS) that it is used to perform serious LC resonance property in certain frequency. The DMS is integrated in antenna structure, and therefore this method keeps the antenna size unchanged and makes a resonance frequency. This resonance is due to the abrupt change of current path of antenna that resonates at 5.8 GHz which is shifted to 2.69 GHz thanks to spiral DMS. A prototype of the antenna was fabricated with an FR4 substrate and tested.

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A novel reconfigurable DGS cell for multi-stopband filter on CPW technology

Cited by 11 publications

References 5 publications

Reconfigurable defected ground structure cell using PIN diodes on Coplanar Waveguide technology

Reconfigurable defected ground structure cell using PIN diodes on Coplanar Waveguide technology

Silicon integrated defected ground structures

Miniaturized Microstrip Patch Antenna With Spiral Defected Microstrip Structure

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