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This paper presents the design of a wideband class AB cascode Power Amplifier (PA) using UMC 0.18µm CMOS process for UWB applications covering lower band of 3–5 GHz. Designed class AB PA delivers an output power of 1.80267 dBm at an input 1-dB compression point of −11.144 dBm for a 4 GHz frequency. It achieves a good gain flatness of 13.3±1.0 dB over the entire 3–5 GHz. The matching networks are designed...
Fourth-generation mobile devices use wide channel bandwidths and OFDM modulation to achieve high data rates. In particular, OFDM modulation in LTE20 creates up to 100 Resource Blocks (RB) each containing 12 subcarriers with 15kHz spacing, spread over the channel bandwidth. For an RB with frequency offset fs from the LO, transmitter non-linearity causes counter-intermodulation (CIM) products at −3f...
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