Mixer-First MIMO Receiver With Reconfigurable Multi-Port Decoupling and Matching
| Autor: | Charley Wilson, Jacob Dean, Brian Floyd |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Computer science
020208 electrical & electronic engineering MIMO Magnetic monopole 02 engineering and technology Noise figure Computer Science::Other Broadband 0202 electrical engineering electronic engineering information engineering Baseband Electronic engineering Polyphase system Electrical and Electronic Engineering Wideband Electrical impedance Decoupling (electronics) Computer Science::Information Theory |
| Zdroj: | IEEE Journal of Solid-State Circuits. 55:1401-1410 |
| ISSN: | 1558-173X 0018-9200 |
| Popis: | This article presents architectures to realize mutual impedance tuning for N -path mixer-first multiple-input multiple-output (MIMO) receivers. A coupled response at baseband is upconverted to radio frequency to realize the tunable mutual impedance. This enables the dynamic decoupling of coupled-antenna systems. The impedance of a multi-port receiver is analyzed and shown to be able to provide a wideband tunable and broadband coupled response with an array of RC baseband networks. A two-port mixer-first MIMO receiver is realized in a 45-nm silicon on insulator (SOI) CMOS and includes polyphase baseband resistive-coupling networks. The two receivers consume 16 mW and operate over 0.1–3 GHz. Each receiver achieves 3–6-dB noise figure and 14–40-dB conversion gain. The MIMO system with $N$ -path decoupling was measured with two cases: two monopole antennas and a two-port single-aperture antenna. Signal-to-noise ratio was increased by 7 and 5.2 dB, respectively. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|