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Design Of Analog Cmos Integrated Circuits

In general, Micropower Impulse Radar (MIR) depends on Ultra-Wideband (UWB) transmission systems. UWB technology can supply innovative new systems and products that have an obvious value for radar and communications uses. Important applications include bridge-deck inspection systems, ground penetrating radar, mine detection, and precise distance resolution for such things as liquid level measurement. Most of these UWB inspection and measurement methods have some unique qualities, which need to be pursued. Therefore, in considering changes to Part 15 the FCC needs to take into account the unique features of UWB technology. MIR is applicable to two general types of UWB systems: radar systems and communications systems. Currently LLNL and its licensees are focusing on radar or radar type systems. LLNL is evaluating MIR for specialized communication systems. MIR is a relatively low power technology. Therefore, MIR systems seem to have a low potential for causing harmful interference to other users of the spectrum since the transmitted signal is spread over a wide bandwidth, which results in a relatively low spectral power density.

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Response to FCC 98-208 notice of inquiry in the matter of revision of part 15 of the commission's rules regarding ultra-wideband transmission systems

Resonance conditions for a substrate-superstrate printed antenna geometry which allow for large antenna gain are presented. Asymptotic formulas for gain, beamwidth, and bandwidth are given, and the bandwidth limitation of the method is discussed. The method is extended to produce narrow patterns about the horizon, and directive patterns at two different angles.

Gain enhancement methods for printed circuit antennas

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Design Of Integrated Circuits For Optical Communications

This expanded and thoroughly revised edition of Thomas H. Lee's acclaimed guide to the design of gigahertz RF integrated circuits features a completely new chapter on the principles of wireless systems. The chapters on low-noise amplifiers, oscillators and phase noise have been significantly expanded as well. The chapter on architectures now contains several examples of complete chip designs that bring together all the various theoretical and practical elements involved in producing a prototype chip. First Edition Hb (1998): 0-521-63061-4 First Edition Pb (1998); 0-521-63922-0

The Design of CMOS Radio-Frequency Integrated Circuits: RF CIRCUITS THROUGH THE AGES

A reduced profile directional and high gain slot antenna loaded with Electromagnetic Band Gap (EBG) cavity and anisotropic negative permeability medium (NPM) is proposed which is investigated numerically as well as experimentally. Measured result shows a good agreement with the simulation result. Bandwidth of the proposed antenna extends from 3.4 GHz–4.1 GHz (Fractional Bandwidth (FBW) of 19%). Significant improvement in gain about 7 dB is achieved as compared to the conventional slot antenna with E and H plane beam-width of 35.30 and 36.80, respectively.

http://ieeexplore.ieee.org/iel7/7295716/7304376/07304624.pdf

A high gain EBG backed slot antenna loaded with anisotropic mu-negative superstrate

Optimizing Gain of an RF Amplifier using Design of Experiments (DOE), is presented. The constraints of keeping minimum deviations in both frequency and Noise Figure (NF) is taken in to account by ANOVA and nominal-the-best approach of Taguchi Methods. Gain of the amplifier is improved by 2.4 dB with frequency and NF deviations of 0% each.

Optimizing Gain of 5 GHz RF amplifier keeping minimum deviation in center frequency and noise figure

We experimentally demonstrate a modeling methodology for inductive parasitics of RFIC interconnects. The method exploits the equivalence between a microstrip line and the cross section of a multi metal layer CMOS fabrication process. The proposed model is applied on an oscillator fabricated in a standard 0.18 mum mixed mode CMOS process. We compare the experimental results of the phase noise of the oscillator so fabricated with the simulation results using the microstrip equivalent model for the interconnects. The simulation and experimental results match very closely.

Microstrip equivalent parasitics modeling of RFIC interconnects

A high‐isolation linear folded mixer for ISM band in UMC 180NM CMOS technology

A novel and compact multi mode resonator (MMR) based ultra-wideband (UWB) (31 GHz-106 GHz) filter is proposed Modified split ring resonator (MSRR) is used as multi-mode resonator (MMR) to achieve desired UWB pass band response by feeding thorough inter-digital coupled lines Couple of shorted stubs is incorporated in order to improve sharp roll off at the pass band edges of the UWB pass band Strongly coupled inter-digital coupled lines ensure low insertion loss in the pass band Filter is fabricated on RT/Duroid 5880 substrate (e r =22 and h=0785) with effective geometrical area 26 × 9 sq mm Excellent correlation between measured and simulated results ensures legitimacy of the device for UWB communications

Jayanta Mukherjee

Papers

A high gain EBG backed slot antenna loaded with anisotropic mu-negative superstrate

Optimizing Gain of 5 GHz RF amplifier keeping minimum deviation in center frequency and noise figure

Microstrip equivalent parasitics modeling of RFIC interconnects

A high‐isolation linear folded mixer for ISM band in UMC 180NM CMOS technology

A novel and compact ultra-wide band (UWB) filter using modified split ring resonator (MSRR)