Miniature multilayer spiral inductors for GaAs MMICs

Geen, M.W.; Green, G.J.; Arnold, R.G.; Jenkins, J.A.; Jansen, R.H.

doi:10.1109/gaas.1989.69348

Cited by 43 publications

(16 citation statements)

References 3 publications

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“…A patterned ground shield has been demonstrated to be especially useful when attempting to realize an inductor on very low-resistivity substrates (i.e., cm, [12]). Inductor chip area is reduced by connecting (overlaid) spiral inductors on multiple levels of metal in series, thereby increasing the inductance per unit area [13]. However, the factor is adversely affected by the nonuniform metal thickness in most VLSI technologies and increased interwinding and parasitic capacitances to the conductive substrate for multilevel spirals.…”

mentioning

confidence: 99%

Differentially driven symmetric microstrip inductors

Danesh

Long

2002

IEEE Trans. Microwave Theory Techn.

223

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Abstract-A differentially excited symmetric inductor that enhances inductor quality ( ) factor on silicon RF ICs is presented. Compared with an equivalent single-ended configuration, experimental data demonstrate that the differential inductor offers a 50% greater factor and a broader range of operating frequencies. Predictions from full-wave simulations and a physics-based SPICE-compatible model are validated by experimental measurements on an inductor fabricated in a triple-level metal silicon technology. Application of the symmetric inductor to a cross-coupled oscillator improves output voltage swing and phase noise by 75% and 1.8 dB, respectively (for a given power consumption), while chip area is reduced by 35% compared to conventional inductor equivalents.

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mentioning

confidence: 99%

Differentially driven symmetric microstrip inductors

Danesh

Long

2002

IEEE Trans. Microwave Theory Techn.

223

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“…In this type k-factors close to 0.9 could be achieved. Figure 2c shows the stacked type transformer in which both edge and broadside magnetic coupling influence mutual inductance and k-factor [14]. The advantage of this type of windings is very high mutual inductance as well as high self-inductances.…”

Section: Methodsmentioning

confidence: 99%

Numerical investigation of magnetic sensor for DNA hybridization detection using planar transformer

Azimi¹,

Bahmanyar²,

Zolgharni³

et al. 2007

The International Journal of Multiphysics

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“…The resonators are coupled as a transformer. Four types of structure can implement coupled inductors: a parallel conductor coil [23] (also known as a Shibata type), an interactive wound coil [24] (also known as a Frlan type), a stack coupled coil [25] (also known as a Finlay type), and a concentric spiral coil. In the proposed filters, stacked coupled coils are adopted because of their high coupling efficiency, permitting a great reduction of the bandpass filter.…”

Section: Resonator Analysismentioning

confidence: 99%

Miniaturization Design of Full Differential Bandpass Filter With Coupled Resonators Using Embedded Passive Device Technology

Kuo²,

Lyu³

et al. 2011

PIER

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Abstract-This paper presents two full differential bandpass filters with small occupied areas. Both filters are designed with the same basic structure which consists of two double coupled resonators with magnetic coupling. The resonators are stacked up and have the advantage of high coupling efficiency, reducing the area. Nevertheless, in the basic structure, the insertion loss in the high stopband is above −10 dB and therefore does not meet the requirement for bandpass filter design. Thus, two solutions are introduced to form the proposed filters. The first one integrates the ground plane, while the second one makes the use of an extra transmission zero. With the help of these solutions, two types of full differential bandpass filters are implemented on an FR4 using the embedded passive device technology, with the additional purpose of being designed for SiP applications. The passband of the filters conforms to the WLAN IEEE 802.11a (5 GHz) standard. Most importantly, the occupied areas of the two proposed bandpass filters are only 6 mm × 6.7 mm and 6.6 mm × 8.3 mm respectively. Compared with previous research, area reductions of up to 98.05% and 97.76% can be achieved.

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Miniature multilayer spiral inductors for GaAs MMICs

Cited by 43 publications

References 3 publications

Differentially driven symmetric microstrip inductors

Differentially driven symmetric microstrip inductors

Numerical investigation of magnetic sensor for DNA hybridization detection using planar transformer

Miniaturization Design of Full Differential Bandpass Filter With Coupled Resonators Using Embedded Passive Device Technology

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