A 60 GHz high-Q tapered transmission line resonator in 90nm CMOS

Marcu, Cristian; Niknejad, Ali M.

doi:10.1109/mwsym.2008.4632947

Cited by 11 publications

(7 citation statements)

References 5 publications

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“…Clearly, Q TL >10 is only achievable with a tapered TL. It is about 50% more than the quality factor for the MS or CPW TLs, which is in agreement with results obtained in [10]. For area limited designs, MS TL is a good option, where the consumed area<0.18mm 2 is possible.…”

Section: Simulation Resultssupporting

confidence: 90%

Integrated transmission lines for complementary cross-coupled bandpass filters in ΣΔ modulators

Zahabi

Anis

Ortmanns

2012

10th IEEE International NEWCAS Conference

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In this paper, the properties of various types of transmission lines (TLs) intended for an integrated RF TL based sigma delta modulator (ITLSDM) are extracted. The EM simulator is used to achieve accurate models for TLs in a 180nm CMOS technology. The effects of TL parameters are compared and studied in order to achieve the guidelines, which save the area and power consumption of the modulator. The results are verified with an architecture, which is based on complementary crosscoupled bandpass filter (C-BPF) with an auxiliary negative transconductance (ANG). This filter is employed in a 9.6GHz 4 th order f s /4 bandpass SDM tuned at a center frequency of 2.4GHz. Index Terms -integrated transmission line (ITL), sigmadelta modulator (SDM), resonator, complementary crosscoupled bandpass filter (C-BPF).

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Section: Simulation Resultssupporting

confidence: 90%

Integrated transmission lines for complementary cross-coupled bandpass filters in ΣΔ modulators

Zahabi

Anis

Ortmanns

2012

10th IEEE International NEWCAS Conference

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“…In microwave matching circuit design, especially when one needs to match real load impedances, one of the most useful network is a tapered microwave matching network which can be considered as a series of cascaded quarter wavelength transmission lines. The design for tapered lines is usually done by using computer algorithms for continuous sections [40], [41]. For this kind of structure design optimization using nature-inspired metaheuristic methods, namely, particle swarm optimization, was done [10].…”

Section: Microwave Tapered Matching Circuit Designmentioning

confidence: 99%

Core Levels Algorithm for Optimization: Case of Microwave Models

Haydar¹,

Ülker²,

Dimililer³

et al. 2017

ijacsa

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Abstract-Metaheuristic algorithms are investigated and used by many researchers in different areas. It is crucial to find optimal solutions for all problems under study especially for the ones which require sensitive optimization. Especially, for real case problems, solution quality and convergence speed of the algorithms are highly desired characteristics. In this paper, a new optimization algorithm called Core Levels Algorithm (COLA) based on the use of metaheuristics is proposed and analyzed. In the algorithm, two core levels are applied recursively to create new offsprings from the parent vectors which provides a desired balance on the exploration and exploitation characteristics. The algorithm's performance is first studied on some well-known benchmark functions and then compared with previously proposed efficient evolutionary algorithms. The experimental results showed that even at the early stages of optimization, obtained values are very close or exactly the same as the optimum values of the analyzed functions. Then, the performance of COLA is investigated on real case problems such as some selected microwave circuit designs. The results denoted that COLA produces stable results and provides high accuracy of optimization without high parameter dependency even for the real case problems.

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“…A concept of tapering a TL based on the voltage and current distribution along the TL to improve the TL's quality factor has been used for different applications, especially for obtaining high quality factor resonators [11], [12]. Since there is a similar current distribution along the SRR rings [5], as schematically shown with arrows in Fig.…”

Section: Tapered Split Ring Resonatormentioning

confidence: 99%

Split Ring Resonators With Tapered Strip Width for Wider Bandwidth and Enhanced Resonance

Horestani

Al-Sarawi

Abbott

2012

IEEE Microw. Wireless Compon. Lett.

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Abstract-This article presents a modified edge-coupled split ring resonator (SRR). The proposed SRR is composed of two concentric metallic rings with a nonuniform strip width, which is tapered based on the current and voltage profile in the SRR structure. In contrast to other SRR miniaturization methods, which are based on increasing the equivalent capacitance of the SRR, the proposed SRR benefits from both increased capacitance and inductance to preserve the strength and bandwidth of the resonance. It is also shown that compared to a uniform SRR, a tapered SRR with the same electrical size provides a stronger resonance with 84% wider bandwidth, as desired in wideband filter design. The theory and simulation results are validated through measurement.Index Terms-Metamaterials, split ring resonator (SRR).

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A 60 GHz high-Q tapered transmission line resonator in 90nm CMOS

Cited by 11 publications

References 5 publications

Integrated transmission lines for complementary cross-coupled bandpass filters in ΣΔ modulators

Integrated transmission lines for complementary cross-coupled bandpass filters in ΣΔ modulators

Core Levels Algorithm for Optimization: Case of Microwave Models

Split Ring Resonators With Tapered Strip Width for Wider Bandwidth and Enhanced Resonance

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A 60 GHz high-Q tapered transmission line resonator in 90nm CMOS

Cited by 11 publications

References 5 publications

Integrated transmission lines for complementary cross-coupled bandpass filters in &#x03A3;&#x0394; modulators

Integrated transmission lines for complementary cross-coupled bandpass filters in &#x03A3;&#x0394; modulators

Core Levels Algorithm for Optimization: Case of Microwave Models

Split Ring Resonators With Tapered Strip Width for Wider Bandwidth and Enhanced Resonance

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Product

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Integrated transmission lines for complementary cross-coupled bandpass filters in ΣΔ modulators

Integrated transmission lines for complementary cross-coupled bandpass filters in ΣΔ modulators