&lt;title&gt;Photonic bandgap (PBG) technology for antennae&lt;/title&gt;

Jasper, Louis J.; Tran, George T.

doi:10.1117/12.255395

SPIE Proceedings

1996

DOI: 10.1117/12.255395

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<title>Photonic bandgap (PBG) technology for antennae</title>

Louis J. Jasper

George T. Tran

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1998

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“…Original PBG research was done in the optical region [9], but PBG properties are scalable and applicable to a wide range of frequencies. In the microwave region, PBG structures have been used in design of antennas [10], cavities [11], frequency-selective surfaces, and many other structures. In this paper, two-dimensional (2-D) structure based on etching a periodic 2-D pattern in the microstrip ground plane is used [12].…”

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Novel architectures for high-efficiency amplifiers for wireless applications

Radisic

Qian

Itoh

1998

IEEE Trans. Microwave Theory Techn.

143

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This paper presents three novel architectures for high-efficiency amplifiers relying on new harmonic-tuning techniques. These methods yield high-efficiency power amplifiers and reduce unwanted harmonic radiation from the transmitter front end. The first method uses the active integrated-antenna approach to perform harmonic tuning. The second method uses a nontraditional periodic microstrip filter, which allows broadband harmonic tuning. Finally, the third method combines the previous two approaches. Each technique is illustrated by a design example of a power amplifier integrated with an antenna. Guidelines for choosing the appropriate antenna structure and for designing the periodic structures are also presented. Another design issue is inclusion of the antenna and/or periodic structures into the amplifier simulation. To do this, a hybrid approach combining the finite-difference time-domain (FDTD) analysis and harmonic-balance simulation is employed.

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confidence: 99%

Novel architectures for high-efficiency amplifiers for wireless applications

Radisic

Qian

Itoh

1998

IEEE Trans. Microwave Theory Techn.

143

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<title>Photonic bandgap (PBG) technology for antennae</title>

Cited by 1 publication

References 0 publications

Novel architectures for high-efficiency amplifiers for wireless applications

Novel architectures for high-efficiency amplifiers for wireless applications

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