In the recently developed Flexible Wireless System (FWS), the same platform needs to deal with different wireless systems. This increases nonlinear distortion in its wideband power amplifier (PA) because the PA needs to concurrently amplify multi-band signals. By taking higher harmonics as well as interand cross-modulation distortion into consideration, we have developed a method to analyticall...

The design of a 3.0-7.5 GHz UWB CMOS power amplifier (PA) for group 1~3 MB-OFDM UWB applications in TSMC 0.18-μm CMOS technology is presented. The UWB PA proposed in this paper uses a current-reused technique to enhance the gain at the upper end of the desired band, and the resistive feedback at the second stage is used to obtain gain flatness. The shunt-shunt feedback is used to enhance bandwi...

In this paper, we propose an inductorless CMOS wideband low noise amplifier (LNA), operated in the range from 100 to 900MHz, with current reuse, mirror bias, gain control and input matching device using noise-cancellation technologies. The traditional wideband LNAs have different input reflection coefficient parameters (S11) at different gain control modes, and they always implement with induct...

Low Noise Amplifier (LNA) is one of the essential components in Ultra Wideband (UWB) devices. Conventional LNA suffers from large chip area, high power consumption and inadequate Noise Figure (NF). A compact UWB LNA in the bandwidth of 3.1 to 10.6 GHz is proposed. The design is based on inductor-less configuration using the resistive shunt feedback topology and noise canceling techniques for wi...

This paper describes a symmetric ultra lowvoltage (ULV) rail-to-rail CMOS amplifiers using floating gates. Simulation of a compact differential ULV amplifier is presented.

This paper presents a 60 GHz CMOS I/Q receiver for the high-speed wireless communication system. It consists of low noise amplifier, single-to-differential (S2D) passive mixer, buffer amplifier with generator, and wideband baseband (BBA) stage. The measured conversion gain 51 dB is achieved. bandwidth 300 MHz achieved from 57 to GHz. 90° tandem coupler was implemented signal generation, which h...

An phase-sensitive amplifier (PSA) is capable of low-noise optical amplification. A frequency non-degenerate PSA (ND-PSA) requires idler light co-propagating with signal light. Therefore, spectral efficiency reduced by at least half compared to the system using phase-in-sensitive amplifiers such as an erbium-doped fiber amplifier. In this letter, we propose and demonstrate inter-band amplificat...