A single-transistor tunable filter for bluetooth applications

Author

Pantoli, L. ; Stornelli, V. ; Leuzzi, G.

Author_Institution

Dept. of Electr. & Inf. Eng., Univ. of L´Aquila, L´Aquila, Italy

fYear

2012

fDate

Oct. 29 2012-Nov. 1 2012

Firstpage

1269

Lastpage

1272

Abstract

In this paper a wide dynamic range, high-Q, tunable filter realized with a single-transistor active inductor (AI) is presented. A single-transistor amplifier combined with a compensation network allows the control both of the equivalent inductance and of its series resistance in a wide frequency range. The proposed AI has been used in the design of a first-order band-pass filter with a central frequency of 2400MHz with a -3dB bandwidth less than 15MHz in a frequency range of 100MHz around the central frequency. Both attenuation and resonant frequency can be controlled. A dynamic range of 75dB is obtained with a noise figure of 10dB.

Keywords

Bluetooth; UHF amplifiers; UHF filters; UHF transistors; active filters; band-pass filters; inductors; AI; Bluetooth application; equivalent inductance; first-order band-pass filter; frequency 100 MHz; frequency 2400 MHz; gain 3 dB; gain 75 dB; noise figure 10 dB; resonant frequency control; series resistance; single-transistor active inductor; single-transistor amplifier; single-transistor tunable filter; Active inductors; Artificial intelligence; Band pass filters; Dynamic range; Impedance; Microwave filters; Resonator filters; Active filter; gyrator; high dynamic range; single device active inductor;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2012 42nd European

Conference_Location

Amsterdam

Print_ISBN

978-1-4673-2215-7

Electronic_ISBN

978-2-87487-026-2

Type

conf

Filename

6459288