In the short-wave range, size of antenna become large and therefore is a major constraint. Magnetic Loop Antenna provides an advantage over other antennas in terms smaller size, higher quality factor better signal to noise ratio. It works on principle resonance with inductor provided by loop external tuning capacitor operating like tank circuit. The tunable magnetic designed work high frequency...

A proof-of-concept for a new and entirely CMOS compatible tunable nanobeam cavity is demonstrated in this paper. Preliminary results show that a compact nanobeam cavity (~20 μm(2)) with high Q-factor (~50,000) and integrated with a micro-heater atop, is able of tuning the resonant wavelength up to 15 nm with low power consumption (0.35nm/mW), and of attaining high modulation depth with only ~10...

The working frequencies of telecommunication systems are rapidly increasing and sub-THz applications will soon be required. In that context, the current article presents synthesis a tunable ring filter. considered filter introduces new degree freedom allows to meet targeted specifications in terms central frequency bandwidth. Thanks capacitor displacement, equivalent characteristic impedance ca...

In this work, we report a SU-8-based fully integrated miniaturized inductively powered LC transponder for generic implantable wireless sensor applications. It consists of a 1 mm diameter octagonal spiral inductor and a micro fabricated MIM (metal insulator metal) capacitor. Polyvinylidene Fluoride–Trifluoroethylene (PVDF–TrFE) copolymer is applied as a dielectric material for the capacitor fabr...

S. Weiss, T. Uelzen, G. Pantel, J. Mueller Philips Research Laboratories, Hamburg, Germany, Department of Micro Systems Technology, Hamburg University of Technology, Hamburg, Germany, MRI Devices Daum GmbH, Schwerin, Germany Objective: The motivation for the application of intravascular imaging coils is to gain high SNR images from a local area. To maximize SNR, proper tuning and matching of su...

A silicon micromachining method that is able to create deep silicon dioxide blocks at selected locations in a silicon substrate is presented. The process combines deep-reactive-ion etching (DRIE), thermal oxidation, deposition of silicon dioxide and optional planarization. Design issues and parameters for the creation of such blocks are discussed. The selectively defined silicon dioxide blocks ...

This paper describes a new association of a high-Q pseudo 8-path switched-capacitor (S-C) bandpass filter and its command circuit made up by a ring VCO with ‘XOR’ gates. The proposed circuit presents the possibility of tuning over a radio-frequency (RF) broadband allowing to sweep different channels with a high quality factor. Designed with CMOS process (0.35μm, for instance), this circuit is i...

1 4 Proarammable Current Mirror A general configurable analog block (CAB) is presented, which consists of the programmable OTA, programmable capacitor and MOSFET switches. Using the CABs, the universal tunable and field programmable analog array (FPAA) can be constructed, which can realize many signal-processing functions, including filters. A prototype 5x8 CAB array has been fabricated. The ch...