Highly Linear mm-Wave CMOS Power Amplifier

A 29-to-57GHz AM-PM compensated class-AB power amplifier for 5G phased arrays in 0.9V 28nm bulk CMOS

“…specifications, this PA delivers 5.9dB and 4.7dB higher average P OUT than [1] and [3] respectively, despite the lower V DD . The PA in [2] is the only work that achieves higher P OUT under modulated signal but with a much higher (x2.4) supply voltage and much lower modulation bandwidth (less than 32%). Moreover, the very low AM-PM distortion of the presented PA enables state-of-the-art ACPR and up to 6Gb/s data rate at 5.9dBm P OUT with EVM<-25dBc.…”

“…The frequency spectrum above 24GHz will be a key enabler for future Gb/s fifth generation (5G) wireless communication systems [1,2]. To maximize the data rate, high order modulation schemes (e.g.…”

“…However, the BW, average P OUT and ACPR under modulated signal considerably limit the achievable link distance and coexistence with adjacent channels. 2 nd harmonic shorts are introduced in [2] to enhance the PA linearity, achieving excellent PAE under modulated signal but with very limited bandwidth. Clearly, the effectiveness of harmonics traps increase with their quality factor, directly trading with bandwidth.…”

DESIGN AND SIMULATION OF CURRENT FEEDBACK OPERATIONAL AMPLIFIER IN 180nm AND 90nm CMOS PROCESSES

“…In analog systems, design and implementing analog filters carry significance, particularly in signal processing applications. In analog filters, which are active filters where operational amplifiers form the active element, design criteria are too critical for varying requirements and linearity plays a pivotal role in design [2]. The high gain amplifiers, as operational amplifiers are commonly attributed, it offers good bandwidth at the cost of temperature performance, power dissipation etc.…”

“…A topology employing CFA-OTA as input stage cascaded with class AB cross coupled buffer as output stage in .35 µm is discussed in paper [1]. A Ka band linear power amplifier is implemented in 28 nm bulk technology in paper [2]. Also another CMOS CFOA design with 100 MHz bandwidth is presented in paper [11].…”