Here we report on the world's first monolithically integrated HEMT-HBT MMIC receiver. The S-band receiver MMIC is the first of its kind, integrating a 2-stage HEMT LNA RF amplifier and a HEMT LO amplifier with an ...
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Here we report on the world's first monolithically integrated HEMT-HBT MMIC receiver. The S-band receiver MMIC is the first of its kind, integrating a 2-stage HEMT LNA RF amplifier and a HEMT LO amplifier with an HBT double-balanced Gilbert cell mixer using selective MBE. The MMIC achieves greater than 18 dB conversion gain over an RF input band from 1.4-2.6 GHz, a minimum DSB noise figure of 2.3 dB and an IF3 of -0.5 dBm with no IF amplification. In addition, LO-IF and RF-IF isolations in excess of 22 dB and a 2-2 Spur suppression of 40 dBc are obtained due to the use of the double balanced HBT Gilbert cell mixer. The compact MMIC is 7.7/spl times/2.9 mm/sup 2/ and is self-biased from /spl plusmn/5 V supplies with a total dc power consumption of 735 mW. This HEMT-HBT MMIC represents the highest complexity design achieved using the HEMT-HBT selective MBE IC technology and demonstrates size and RF performance advantages over single-technology MMIC and hybrid integrated approaches.
To set designers free from needing to become expert users of a baffling array of complex CAD tools, design environments, including simplified mechanisms to view and control CAD tools, emerged. designers only need to b...
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ISBN:
(纸本)0780325702
To set designers free from needing to become expert users of a baffling array of complex CAD tools, design environments, including simplified mechanisms to view and control CAD tools, emerged. designers only need to be concerned with higher-level design tasks. In this paper we address CAD framework services, with special emphasis on tool management. We present three new tools: AUTOCAP, which deals with tool characterization, invocation and encapsulation;STAR, which makes the task of controlling tools status trivial;and BALANCE, which offers automatic dynamic load balancing.
A discrete-time dynamic model of closed-loop switched mode electronic regulators is derived. No small-ripple approximations are required. The same model serves for both local and global stability study: by discarding ...
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ISBN:
(纸本)0780325702
A discrete-time dynamic model of closed-loop switched mode electronic regulators is derived. No small-ripple approximations are required. The same model serves for both local and global stability study: by discarding the nonlinear terms (like products of small-signal perturbations in the converter state variables) and using the z-transform, a local stability criteria is formulated. Applying the condition that the eigenvalues of the z-domain characteristic matrix have to be situated inside the unit circle, a design constraint on the feedback gains is found. An example of a boost converter operating in continuous conduction mode with inductor current and output voltage feedback is presented.
Optimal application of design for Testability techniques depends on an efficient testability analysis. Circuit complexity does not allow traditional testability analysis approach to perform efficiently. Therefore an h...
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ISBN:
(纸本)0780325702
Optimal application of design for Testability techniques depends on an efficient testability analysis. Circuit complexity does not allow traditional testability analysis approach to perform efficiently. Therefore an higher abstraction level must be considered. This paper presents a methodology for controllability and observability verification at a functional level, starting from a VHDL description of the system architecture. Since efficiency is a primary goal for industrial application of such technique, a representation based on Binary Decision Diagrams has been introduced and its effectiveness is presented on telecom applications.
In this paper a CMOS preamplifier for capacitive sources is presented. The 20 dB gain preamplifier achieves a dynamic range of 54 dB while the total harmonic distortion is below to -50 dB. Monte Carlo analyses have sh...
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In this paper a CMOS preamplifier for capacitive sources is presented. The 20 dB gain preamplifier achieves a dynamic range of 54 dB while the total harmonic distortion is below to -50 dB. Monte Carlo analyses have shown output random offset voltages below to 40 mvolts. The power consumption of the proposed preamplifier is 24 μwatts. All this has been achieved due to the use of a novel resistor and linearized OTAs.
The proceedings contains 185 papers. Topics discussed include robotics and adaptive control, machine control and simulation, converters and inverters, digital signal processing applications, testability issues for dig...
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The proceedings contains 185 papers. Topics discussed include robotics and adaptive control, machine control and simulation, converters and inverters, digital signal processing applications, testability issues for digital circuits and systems, mixed signal integrated circuits, digital hardware design and applications, VLSI design and automation, adaptive systems, image and video coding, data converters and sigma delta modulators, continuous-time circuits, fuzzy systems, digital signal processing in communications, electronicdesign in multimedia, high performance chip designs, high performance analog signal processors, adaptive filters, analog system building blocks, current mode circuits, pattern recognition, power transformer, equipment and control, wavelets and filter banks, multimedia architecture, testing mixed-signal integrated circuits, analog and digital circuits and systems, circuit theory, analysis and design, signal compression, signal processing for communication, implementation of DSP system, modeling for power system analysis and design, analog signal processing and biomedical engineering.
A novel 9 - 16 GHz monolithic HEMT low noise amplifier with on-chip limiters has been designed, fabricated, and measured. This paper presents the design topology, the new fabrication technology, and the on-wafer measu...
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A novel 9 - 16 GHz monolithic HEMT low noise amplifier with on-chip limiters has been designed, fabricated, and measured. This paper presents the design topology, the new fabrication technology, and the on-wafer measurements of this circuit. The limiter consists of one PIN diode and one Schottky diode. The low noise amplifier itself is a single stage balanced amplifier with one limiter embedded in each single-ended amplifier.
This paper presents a low-power large-capacity ATM switching system design and modules (LSI and MCM). The design uses MCM technology with a copper-polyimide substrate, 150-μm pitch outer lead TAB and 98-highway flexi...
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This paper presents a low-power large-capacity ATM switching system design and modules (LSI and MCM). The design uses MCM technology with a copper-polyimide substrate, 150-μm pitch outer lead TAB and 98-highway flexible printed circuit cables for high-density packaging and high-speed operation. Using these technologies, a 160 Gbit/s ATM switching system with a power dissipation of about 1.3 kW can be achieved for future Broadband ISDN systems. This power is 65% of that of the reported system which uses ECL I/Os, and can be cooled by forced air with conventional fin-structures.
Off-line modeling of electronic circuitry including power supply circuitry is available in several software packages. These packages can be hosted on personal computer or workstation platforms. Modeling of power suppl...
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ISBN:
(纸本)0780326229
Off-line modeling of electronic circuitry including power supply circuitry is available in several software packages. These packages can be hosted on personal computer or workstation platforms. Modeling of power supply circuit configurations allows the circuit designer to analyze the circuit for stability and component stress and to select components. circuits are typically modelled as 5 to 15 components where a component may be one or more physical components. While simulation and modeling are necessary for power supply design and design analysis, the use of simulation tools for power supply testing is not widely recognized. Simulation allows a fault to be inserted without damaging the power supply under test. This benefit is particularly important because failures in power supplies often have an avalanche effect. One failure can propagate to damage several other components. This paper explores the application of simulation to the design of diagnostic fault trees of the Test Program Set.
A 2-32 GHz InAlAs/InGaAs-InP HBT CPW distributed amplifier (DA) has been demonstrated which benchmarks the highest bandwidth reported for an HBT DA. The DA combines a 100 GHz fmax and 60 GHz fT HBT technology with a c...
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A 2-32 GHz InAlAs/InGaAs-InP HBT CPW distributed amplifier (DA) has been demonstrated which benchmarks the highest bandwidth reported for an HBT DA. The DA combines a 100 GHz fmax and 60 GHz fT HBT technology with a cascode coplanar waveguide DA topology to achieve this record bandwidth. The cascode CPW DA demonstrates both design techniques and technology capability which can be applied to more complex circuit functions such as active baluns for mixers, active combiners/dividers, and low dc power-broadband amplification at millimeter-wave frequencies.
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