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This paper discusses motivation and design of an offset mixer and investigates its optimum placement in loopback test setup for on-chip RF test. Based on this study, design and implementation of an offset mixer for on-chip RF testing of radio front ends is presented. The offset mixer is passive in nature reducing silicon area and power overheads. Mixer is implemented in 0.13 μm CMOS process and the...
One of the critical blocks in OFDM based transmitter is its power amplifier and the design is aimed for high linearity with maximum power efficiency. This paper describes the design and fabrication of S-band solid state high power amplifier using GaAs power MESFET device for OFDM transmitters. The amplifier operates at center frequency of 2.3 GHz with a bandwidth of 200 MHz. The typical output power...
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