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This paper presents a fully integrated dual-mode 6 to 9 GHz transmitter for both WiMedia and China MB-OFDM UWB applications.The proposed transmitter consists of a dual-mode I/Q LPF,an up-conversion mixer, a two-stage power driver amplifier and a broadband high-speed frequency divider with LO buffers for I/Q LO carrier generation.The measurement results show that the gain ripple of the transmitter is within±1.5/±2.8 dB from 6 to 8.7/9 GHz.The output IP3 is about+13.2 dBm,the output 1dBCP is around +2.8 dBm,and the LO leakage/sideband rejection ratio is about-35/-38 dBc.The ESD protected chip is fabricated with a TSMC 0.13μm RFCMOS process with a die size of 1.6×1.3 mm~2 and the core circuit consumes only 46 mA under a 1.2 V supply.
This paper presents a fully integrated dual-mode 6 to 9 GHz transmitter for both WiMedia and China MB-OFDM UWB applications. The proposed transmitter consists of a dual-mode I / Q LPF, an up-conversion mixer, a two-stage power driver amplifier and a broadband high-speed frequency divider with LO buffers for I / Q LO carrier generation. The measurement results show that the gain ripple of the transmitter is within ± 1.5 / ± 2.8 dB from 6 to 8.7 / 9 GHz. The output IP3 is about + 13.2 dBm, the output 1dBCP is around +2.8 dBm, and the LO leakage / sideband rejection ratio is about -35 / -38 dBc. The ESD protected chip is fabricated with a TSMC 0.13 μm RFCMOS process with a die size of 1.6 × 1.3 mm ~ 2 and the core circuit consumes only 46 mA under a 1.2 V supply.