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Microstrip Technology (microstrip + technology)

Distribution by Scientific Domains
Engineering100%

Selected Abstracts

Average power handling capability of multilayer microstrip lines

INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING, Issue 6 2001
Inder J. Bahl
Abstract This article describes the average power handling capability (APHC) of multilayer microstrip lines, including the effect of mismatch at the terminations. The data presented herein are validated by considering an example of a 12-W monolithic microwave integrated circuit power amplifier fabricated using multilayer low-loss microstrip technology. The calculated value of APHC for a 50-, line of a 75-,m-thick GaAs substrate is 1445 W at 10 GHz, whereas the corresponding value for a multilayer microstrip that has 10-,m-thick polyimide is only 44 W. At 40 GHz, these values are reduced by a factor of 2. © 2001 John Wiley & Sons, Inc. Int J RF and Microwave CAE 11: 385,395, 2001. [source]

Application of metamaterial unit cell in bandpass filter

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 9 2007
Li Jiusheng
Abstract Using microstrip technology, a novel metamaterial unit cell is presented. The metamaterial unit cell consists of microstrip gaps and via hole whose behavior is equivalent to the combination of series capacitors and shunt inductors, respectively. A new chamfered band structure bandpass filter is designed and fabricated using the presented metamaterial unit cell. The transmission loss S21 and return losses S11 of the proposed bandpass filter are equal to ,0.41 and ,25.5 dB, respectively. The experimental and simulation results closely correspond to each other. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2109,2111, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22659 [source]

Optimization of metamaterial based subwavelength cavities for ultracompact directive antennas

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 12 2006
A. Ourir
Abstract Artificial magnetic conductors (AMC) are proposed for the fabrication of subwavelength cavities in the microstrip technology. These metamaterials can simultaneously present a low phase value at reflection and a high impedance for normal incident waves over a wide frequency band. Planar cavities using AMC-based reflectors are applicable to the design of ultracompact directive antennas. An optimized cavity structure is presently shown to provide a significant enhancement of the gain and directivity of a microstrip antenna near 10 GHz. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 2573,2577, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21996 [source]

Novel microstrip backward coupler with metamaterial cells for fully planar fabrication techniques

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 6 2006
E. Jarauta
Abstract By using a recently proposed approach to synthesize 1D metamaterials in planar circuit technology, compatible with fully planar fabrication techniques, a novel backward coupler has been designed and fabricated. It has been implemented in microstrip technology by means of complementary split-ring resonators (CSRRs), etched in the ground plane, and series capacitive gaps. This way, we obtain the necessary left-handed properties for reversing the forward coupling (typical of co-directional coupled-line couplers) into backward coupling. The simulation as well as measurement results confirm the enhanced properties of the proposed couplers. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 48: 1205,1209, 2006; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21579 [source]

Microstrip antennas for cellular and wireless communication systems

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 5 2002
obodzian
Abstract The Letter describes problems related to use of microstrip antennas in cellular and wireless telecommunications systems. Because of the unique properties, microstrip technology is nowadays often used to manufacture small internal antennas for portable terminals as well as antenna arrays for base stations. It also seems to be a very promising technology for multisystem antennas, for which there is an ever-growing demand. The Letter also presents a short overview of currently available solutions and ones under development by the authors, along with some key problems related to their design. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 34: 380,384, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10468 [source]