Wireless systems often make use of the quadrature relationship between pairs of signals to
effectively cancel out-of-band and interfering in-band signal components. The …

(57) ABSTRACT A reconfigurable receiver is disclosed, operating in accor dance with a two-
step channel selection. The first step pro vides for a coarse radio frequency (RF) channel …

Quadrature Doppler radar is widely utilized in micro-motion monitoring due to its advantages
of noncontact, miniaturization, and excellent environmental adaptability. However, the …

US8019290B2 - Two-step channel selection for wireless transmitter front-ends - Google Patents
US8019290B2 - Two-step channel selection for wireless transmitter front-ends - Google Patents …

In a double-sampling quadrature bandpass sigma-delta modulator, path mismatch between
the double-sampling branches and between the I/Q paths occurs. In this paper, an analytical …

Receiver technology has evolved significantly over the past decades. A variety of receiver
architectures have been developed for addressing different applications. In general, more …

This paper starts with a review of the prevailing channel-selection techniques utilized so far
in the design of wireless transceiver analog front-ends before describing a novel two-step …

This paper presents a technique to suppress the mismatch between the in-phase (I) and
quadrature-phase (Q) channels of a switched-capacitor complex sigma-delta modulator that …

Quadrature sampling of intermediate frequency (IF) signals is subject to the well-known
problem of gain and phase mismatches between the in-phase (I) and quadrature (Q) …

This paper presents a low-IF/zero-IF reconfigurable receiver for multistandard applications
based on a two-step channel selection (2-SCS) technique. Such technique is mainly …