A 1–3 GHz CMOS mixer-first receiver frontend with dual-feedback OTA achieving 306 MHz IF bandwidth, 2.1 dB NF, and 33 dB gain

Author:

Guo Benqing1ORCID,Wang Haishi1,Wang Huifen2,Wang Yao3

Affiliation:

1. College of Communication Engineering, Chengdu University of Information Technology, Chengdu 610225, China

2. Department of Civil Engineering and Architecture, Zhengzhou 450000, China

3. School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China

Abstract

In this paper, a mixer-first receiver frontend with dual-feedback baseband is proposed. The negative resistive and positive capacitive feedback paths are both applied to single-stage inverter-based operational transconductance amplifier (OTA) with fewer poles, to cover a wide BB frequency range. The [Formula: see text]-path filtering at the RF side and second-order filtering at the BB side inhibit out-of-band blocker interferences. The receiver frontend is designed in 65 nm CMOS. Simulation results display an NF of 2.1 dB across 306 MHz IF bandwidth, and a maximum gain of 33 dB from 1 to 3 GHz LO frequency range. The in-band and out-of-band IIP3 are -13 and 16 dBm, respectively. The receiver core draws 40 mW at 1 GHz LO frequency.

Funder

National Natural Science Foundation of China

Publisher

World Scientific Pub Co Pte Ltd

Subject

Condensed Matter Physics,Statistical and Nonlinear Physics

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