A layer-encoded interactive evolutionary algorithm (IEA) for optimization of design parameters of a monolithic microwave integrated circuit (MMIC) low noise amplifier is presented. The IEA comprises a combination of the genetic algorithm (GA) and the particle swarm optimization (PSO) technique. The layer-encoding structure allows human intervention in order to accelerate the process of evolutio...

This paper presents a new structure for a six-port reflectometer which due to its simplicity can be implemented very easily in monolithic microwave integrated-circuit (MMIC) technology. It uses nonmatched diode detectors with a high input impedance which are placed around a phase shifter in conjunction with a power divider for the reference detector. The circuit has been fabricated using the F2...

This paper discusses the application of computational electromagnetics (CEM) for electromagnetic compatibility (EMC) problems of integrated circuits (ICs). It is known that the application of CEM is versatile in solving a wide range of problems. This paper focuses on the electromagnetic study of quad flat non-lead (QFN) packaged ICs, one monolithic microwave integrated circuit (MMIC) and anothe...

In this paper, we present new results in the development of a broad-band spatial power-combining system implemented in a standard X-band waveguide environment. Using 24 off-the-shelf GaAs monolithic-microwave integrated-circuit (MMIC) power amplifiers integrated with tapered-slot antenna arrays, the new combining circuit produced up to 126-W maximum power output with a gain variation of 1.9 dB ...

This thesis addresses integrated circuit component, packaging, and microwave design for both AC and DC Josephson voltage standard (JVS) systems. The components developed in this work combine techniques from both the distributed and lumped-element microwave design in the frequency range 0–40 GHz. The National Institute of Standards and Technology (NIST) JVS systems rely on 10 000 to 300 000 micr...

We report experimental and analytical results of a fiber-optic link that supports simultaneous transmission of baseband data and subcarrier multiplexed control-data channels. A novel transmitter design is used to optoelectronically combine baseband and subcarrier channels onto the optical carrier using a differential Mach–Zehnder (MZ) interferometer modulator. Microwave direct detection of the ...

An efficient metal-insulator-metal (MIM) capacitor simple scalable model for use in monolithic-microwave integrated circuit (MMIC) design is presented in this paper. This model is based on transmission-line theory. Analytical expressions based on physical parameters have been given in detail. Nine different physical dimension capacitors are fabricated to verify the validity of the proposed mode...

A single-chip dual-band power amplifier monolithic microwave integrated circuit (MMIC) operating at 3.5V single supply has been developed for both WLAN 2.4GHz and 5.2GHz with IEEE 802.11b/g/a standards applications. The MMIC utilizes the process of WINs Corp. with an InGaP/GaAs HBT process. The dual-band power amplifier constructed based on the design of adaptive RF bias choke circuits and prop...