-Enhanced LC Bandpass Filters for Integrated Wireless Applications
نویسندگان
چکیده
Q-enhanced LC filter technology offers an alternative to the use of direct conversion techniques for implementing fully integrated receivers. Design and performance issues for QE LC filters are discussed and a fully integrated 850-MHz, two-pole, bandpass filter with an 18-MHz 3-dB bandwidth is reported. The prototype design is implemented in a standard 0.8m CMOS process and achieves a rejection of over 50 dB at 100 MHz offset, an in-band dynamic range of 75 (90) dB when used in a system with a 1-MHz (30-kHz) final IF bandwidth, and a third-order intercept point that exceeds +25 dBm at an 80-MHz offset from the passband center.
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