A review of the electromagnetic properties and the full-wave analysis of the guiding structures in MMIC
Article Abstract:
A general overview of the basic electromagnetic phenomena that rule the behavior of strip transmission lines, the basic building blocks of monolithic microwave/millimeter integrated circuit technology, leads to a description of a versatile analytical method for treating guiding structures. Wave behavior is dispersive, making exact analysis a difficult task, because the structure is inhomogeneous. Circuit designers require accurate data on key circuit parameters like propagation constants, characteristic impedance and S-parameters of discontinuities, in order to design in a single pass. The designer must also be able to anticipate and prevent parasitic coupling occurring between circuit components. Methods that provide accurate modeling of electromagnetic field behavior as it propagates down the line use static approximations, but they deteriorate at high frequencies. Better methods are still needed.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1991
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Antennas and other electromagnetic applicators in biology and medicine
Article Abstract:
The use of antennas and other electromagnetic devices in biology and medicine is a dynamic field that is benefitting from improvements in computer technology and advances in numerical electromagnetic techniques. The use of antennas in biology and medicine can be placed in two categories: therapeutic and informational/diagnostic. Generally speaking most medical applications involve electromagnetic coupling into or out of the body, a procedure that requires an antenna or other applicator. The most significant difficulty with these procedures is the coupling of electromagnetic energy into the body without harming the surface. Among the uses of electromagnetic devices in biology are hyperthermia for cancer therapy, and in combination with balloon angioplasty to soften arterial plaque.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1992
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Multifunction W-band MMIC receiver technology
Article Abstract:
A description of the evolution of a W-band (75 to 110 GHz) four-channel monolithic receiver front-ends is given. Monolithic Microwave Integrated Circuit (MMIC) technology is followed by multifunctional MMIC technology. Of major importance to development of the monolithic front-end was to ensure the process compatibility between individual components and the careful partitioning of the chip architecture. Further enhancement of component performance and extension of flexibility in defining future system architectures that are small in size and affordable can be obtained by the utilization of heterostructure technology; this complements the successful development of the MMIC.
Publication Name: Proceedings of the IEEE
Subject: Electronics
ISSN: 0018-9219
Year: 1991
User Contributions:
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