Stacked Inductors and Transformers in CMOS Technology
نویسندگان
چکیده
A modification of stacked spiral inductors increases the self-resonance frequency by 100% with no additional processing steps, yielding values of 5 to 266 nH and self-resonance frequencies of 11.2 to 0.5 GHz. Closed-form expressions predicting the self-resonance frequency with less than 5% error have also been developed. Stacked transformers are also introduced that achieve voltage gains of 1.8 to 3 at multigigahertz frequencies. The structures have been fabricated in standard digital CMOS technologies with four and five metal layers.
منابع مشابه
Analysis of Eddy-Current Losses Over Conductive Substrates with Applications to Monolithic Inductors and Transformers
In this paper, a closed-form integral representation for the eddy-current losses over a conductive substrate is presented. The results are applicable to monolithic inductors and transformers, especially when such structures are realized over an epitaxial CMOS substrate. The technique is verified against measured results from 100 MHz to 14 GHz for spiral inductors.
متن کاملLow-power current-reused RF front-end based on optimized transformers topology
This paper discusses the design, analysis and performance of a 2.4 GHz fully integrated low-power current-reused receiver front-end implemented in 0.18 μm CMOS technology. The front-end is composed of a single-to-differential low-noise amplifier (LNA), using high-Q differential transformers and inductors and a coupled switching mixer stage. The mixer transconductor and LNA share the same DC cur...
متن کاملA High Gain and Forward Body Biastwo-stage Ultra-wideband Low Noise Amplifier with Inductive Feedback in 180 nm CMOS Process
This paper presents a two-stage low-noise ultra-wideband amplifier to obtain high and smooth gain in 180nm CMOS Technology. The proposed structure has two common source stages with inductive feedback. First stage is designed about 3GHz frequency and second stage is designed about 8GHz. In simulation, symmetric inductors of TSMC 0.18um CMOS technology in ADS software is used.Simulations results ...
متن کاملDesign, measurement and modeling process of Si integrated inductors for implanted transmitters
This work shows the process of characterization and modeling of integrated inductors in CMOS silicon technology for biotelemetry applications [1]. Three planar square inductors with different geometrical characteristics were designed, using the 2 μm CMOS technology of AMS. With physical models [2, 3] and the software ASITIC, was possible to define the geometrical characteristics of the inductor...
متن کاملMonolithic Transformers and Their Application in a Differential CMOS RF Low-Noise Amplifier
A 900 MHz low-noise amplifier (LNA) utilizing three monolithic transformers to implement on-chip tuning networks and requiring no external components has been integrated in 2.88 mm in a standard digital 0.6 m CMOS process. A bias current reuse technique is employed to reduce power dissipation, and process-, voltage-, and temperature-tracking biasing techniques are used. At 900 MHz, the LNA diss...
متن کامل