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A novel surface acoustic wave (SAW) duplexer module called a converged Rx duplexer module is proposed. The Rx ports of two duplexers for different frequency bands are combined using passive matching components in the module, which reduces the number of Rx pins by half. A feasibility study including the issue of isolation between the bands is discussed and a prototype composed of four duplexers (two...
This paper presents the design of a high efficiency, 950 MHz fully differential power amplifier for wireless communications in a standard 0.18 μm CMOS technology. The power amplifier employs a fully differential class-E topology to achieve high power efficiency by exploiting its soft-switching property. The concept of mode locking is used in the design, in which the amplifier acts as an oscillator...
A passive RF signal receiving and power switch ASIC is proposed, designed and verified for remote AC power switch. This IC receives 915 MHz RF signals containing power switching commands, and switches on/off the AC power relay of a household appliance accordingly. The proposed ASIC only uses energy recovered from the received RF signal, and it consumes almost zero stand-by current. The wireless identification...
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