This article focuses on the design considerations and trade-offs of the RF part of a typical dual-band TDMA transceiver, including: RF specifications, mobile phone modules, receiver specifications, structure, design trade-offs, parasitic response suppression, etc. It is suitable for (Chinese) mobile phone design engineers and technicians. TIA/EIA/ANSI-136 is the current cellular/PCS standard for dual-band time division multiple access (TDMA) mobile phones in the North American market. The standard has been upgraded to facilitate the transition to 3G communication applications with wireless data/voice terminals. The new UWCC136 standard of the Universal Wireless Communications Association will allow future data phones to have multimedia and wireless Internet access functions. These additional functions require higher data transmission rates and RF bandwidth. Currently, the transmission frequency band for cellular services in mobile base stations is allocated from 824.04 to 848.97MHz, and the PCS band is 1,850.01 to 1,909.95MHz. Mobile...
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