Name
Title | ||
|---|---|---|
A 919 MHz-923 MHz, 21 dBm CMOS Power Amplifier With Bias Modulation Linearization Technique Achieving PAE of 29% for LoRa Application |
Abstract | ||
|---|---|---|
This paper presents a bias modulation linearization technique for a 919 MHz -923 MHz CMOS power amplifier which employs driver voltage modulation and main amplifier split bias. Through the proposed linearization technique, it is observed that the peak third-order intercept point (OIP3) across the output power is shifting according to the bias conditions of the split-bias power amplifier (SBPA). The third-order transconductance (g(m3)) terms are suppressed at the output by phase cancellation achieved by optimization of the bias voltages of the PA. A high dynamic range bias circuit is integrated at the driver and split main to enhance the linearity of the CMOS PA, eradicating the need for pre-distortion linearizers. The two-stage SBPA is designed and fabricated in a 180 nm CMOS process with six-metal layers and a chip size of 1.820 x 1.771 mm(2) to operate at the supply voltage of 3.3 V. The bias voltages of both driver and split main stages are varied from 0 V to 2.0 V with a linear step size of 0.2 V. The proposed SBPA delivers a saturated output power (P-out) of 27 dBm with maximum power-added efficiency (PAE) of 44.4% and peak 01P3 of 39 dBm. A maximum linear P-out of 21 dBm with 29% PAE is achieved at an adjacent channel leakage ratio (ACLR) of -30 dBc and 4% error vector magnitude (EVM), satisfying the LoRa specifications. |
Year | DOI | Venue |
|---|---|---|
2022 | 10.1109/ACCESS.2022.3193689 | IEEE ACCESS |
Keywords | DocType | Volume |
Adjacent channel leakage ratio (ACLR), bias circuit, complementary metal-oxide-semiconductor (CMOS), error vector magnitude (EVM), intermodulation distortion (IMD), long-range (LoRa), power amplifier, radio frequency power amplifier (RFPA), third-order intercept point (OIP3) | Journal | 10 |
ISSN | Citations | PageRank |
2169-3536 | 0 | 0.34 |
References | Authors | |
0 | 6 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Arvind Singh Rawat | 1 | 0 | 0.34 |
| Jagadheswaran Rajendran | 2 | 0 | 0.34 |
| Selvakumar Mariappan | 3 | 0 | 0.34 |
| Pravinah Shasidharan | 4 | 0 | 0.34 |
| Narendra Kumar | 5 | 3 | 1.02 |
| Binboga Siddik Yarman | 6 | 12 | 4.51 |