A Widely Tunable Full Duplex Transceiver Combining Electrical Balance Isolation and Active Analog Cancellation
A Widely Tunable Full Duplex Transceiver Combining Electrical Balance Isolation and Active Analog Cancellation
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结合电气平衡隔离和有源模拟消除的宽范围可调全双工收发器
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
J. Haine
中科院分区：
文献类型：
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作者：
L. Laughlin;Chunqing Zhang;M. Beach;K. Morris;J. Haine
电平衡双工器可以提供高发送接收隔离度，同时促进从单个天线的发送和接收，可以在芯片上实现，并且可广泛调谐，这使其成为在小型设备中实现全双工架构的有吸引力的技术。本文介绍了结合电气平衡和有源模拟消除的新型硬件原型全双工收发器架构的测量结果。该原型双工器在 890MHz 和 1890MHz 的 20MHz 带宽上实现了 >80dB 的发射到接收隔离，超过了天线隔离架构的性能，其中天线隔离仅限于手持设备可实现的水平。
Electrical balance duplexers can provide high transmit-to-receive isolation whilst facilitating transmission and reception from a single antenna, can be implemented on-chip, and are widely tunable, making this an attractive technology for implementing full duplex architectures in small form factor devices. This paper presents measurements from a novel hardware prototype full-duplex transceiver architecture combining electrical balance and active analog cancellation. The prototype duplexer achieves >80dB transmit-to-receive isolation over a 20MHz bandwidth at both 890MHz and 1890MHz, exceeding the performance of antenna separation architectures where the antenna isolation is limited to the levels achievable in hand held devices.