A Widely-Tunable, Reconfigurable CMOS Analog Baseband IC for Software-Defined Radio

作者：Kitsunezuka Masaki^*; Hori Shinichi; Maeda Tadashi

来源：IEEE Journal of Solid-State Circuits, 2009, 44(9): 2496-2502.

DOI：10.1109/JSSC.2009.2023275

• Analog baseband
• discrete-time filter
• duty-cycle control
• reconfigurable filter
• software-defined radio

This paper describes a reconfigurable analog base-band (ABB) for a software-defined radio (SDR). A wide variety of filter characteristics needed for SDR can be obtained by a reconfigurable filter based on a newly developed duty-cycle controlled discrete-time transconductor. The ABB, implemented in a 90 nm CMOS process, provides second- and fourth-order Butterworth, Chebyshev, and elliptic responses with bandwidths from 400 kHz to 30 MHz. The chip draws only 12 mA and achieves a P(1dB) of 7 dBm with a 1.0 V supply. The input-referred integrated in-band noise is 0.31 m V(rms) and the die area is as small as 0.57 mm(2).

• 出版日期2009-9