Luca Pergola - IEEE Xplore Author Profile

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Dual band systems operating in the ISM and U-NII unlicensed bands are of growing interest. LTCC with its outstanding three-dimensional packaging capability is one of the most suitable technologies for the realization of high performance, compact WLAN transceivers. In this paper we describe the design of a diplexer for IEEE 802.11 a/b/g compliant front-ends. The proposed structure utilizes a lumped...Show More
The design of a dual band base station for IEEE 802.11 a/b/g WLANs, using a radio over fiber approach, is presented. For the first time LTCC technology is being used to couple a graded index polymer optical fiber (GI-POF) to a vertical electroabsorption transceiver. The presented approach enables full optical transceiving functionalities and employs only one optical fiber to connect the base stati...Show More
This paper describes the realization of a low-temperature co-fired ceramic (LTCC)-based wireless transceiver with optical interface for radio-over-fiber applications involving several standards. The RF front-end including an antenna is fabricated in LTCC technology, while the optical transceiver with a single-mode optical interface is built on a silicon motherboard. The front-end operates in the 5...Show More
This paper describes the realization of an LTCC based optical wireless-transceiver using radio-over-fiber (RoF) techniques. For the first time, single mode optical fibers are employed, making this device particularly attractive for indoor and outdoor distributed antenna systems. The operating frequencies are in the 5-6 GHz bandShow More
We report the design, assembly and measurement of an active RF-frontend module based on LTCC technology. The frontend is part of a 16 element array for a channel sounder operating in the frequency range between 5.15 GHz and 5.875 GHz. The active module includes the antenna, an LNA, a band pass filter for the image rejection and a mixer; a directional coupler is also incorporated for calibration pu...Show More
We developed an efficient method to extract a large-signal lookup table model for InP high electron-mobility transistors that takes impact ionization into account. By measuring the device on a logarithmic frequency scale, we obtain high resolution at lower frequencies to accurately characterize impact ionization, and a sufficient number of data points at millimeter-wave frequencies to extract the ...Show More
We have developed a procedure to extract a look-up table based large-signal model for InP HEMTs which achieves good performances up to 110 GHz. The model is derived from a previous work with some modifications in order to take into account impact ionization and millimeter-wave effects. A logarithmic frequency sweep is used to speed up both the measurements and the data processing. In this way we r...Show More
We developed an efficient method to determine a large-signal look-up table model for InP HEMTs. By performing the measurements on a logarithmic frequency scale, we have a high resolution at lower frequencies to accurately characterise impact ionisation, and sufficient data points at millimetre wave frequencies to extract the non-quasi-static parameters.Show More