This chapter starts with a review of the prevailing channel-selection techniques utilized so far in the design of wireless transceiver analog frontends (AFEs), followed by the presentation of a novel Two-Step Channel- Selection technique. It handles the traditionally unwanted image, in RF-to-IF (or IF-to-RF) frequency conversion, as a useful adjacent of the desired channel, and selects deliberately either of them from IF to baseband (or baseband to IF). Thus, one additional possibility for selecting channels will be created for both low-IF receivers and two-step-up transmitters, resulting in two types of benefits. First, many design specifications of the RF frequency synthesizer (e.g., settling time) and local oscillator (e.g., phase noise) can be substantially relaxed.
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(2007). Two-Step Channel Selection – A Technique For Multistandard Transceiver Front-Ends. In: Analog-Baseband Architectures And Circuits For Multistandard And Lowvoltage Wireless Transceivers. Analog Circuits and Signal Processing. Springer, Dordrecht. https://doi.org/10.1007/978-1-4020-6433-3_3
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