The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Tunable coplanar interdigital capacitors (IDC) based on Barium-Strontium-Titanate (BST) thick-films are evaluated for their suitability for high power applications, such as tunable impedance matching networks of power amplifiers. The design process has been reviewed with respect to the nonlinearity of the varactors. Various devices have been fabricated and their performance has been verified by measurements...
A VCO is fabricated in 0.35 mum CMOS technology for tuner application as a proof of concept for a novel method of resistively tuning the inductance of an LC VCO. By employing a transformer as inductor, L is varied by changing the secondary coil current using active resistors. This eliminates the need for using multiple inductors to cover the frequency spectrum of 1.1 to 1.9 GHz, resulting in large...
This paper gives a short introduction into tunable dielectrics for microwave applications based on nematic liquid crystal and Barium-Strontium-Titanate (BST) thin- and thick-films. Due to their tuning voltage dependent electromagnetic properties, both are very promising material candidates for tunable passives in the microwave and millimeter-wave regions. For applications, such as frequency-agile...
A very wide tuning range CMOS MMIC bandpass filter is implemented using active coupled resonators and experimentally demonstrated. It can realise a 0.51 GHz frequency tuning range around 1.8 GHz using a single control voltage, with an ultra-compact size of 0.28 mm and a very low DC power consumption of 41 mW.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.