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A key issue impacting the transmit to receive (TXRX) isolation in Electrical Balance (EB) duplexers is dynamic matching of the antenna impedance by the balancing network. Circuit simulations including embedded antenna measurements have been used to investigate the variation in TX-RX isolation due to device motion, and to study the effect of the operational environment, device speed, and the duplexer...
There is now significant interest in the use of signal cancellation based architectures in an attempt to replace frequency domain filtering within the duplexing function for next generation wireless transceivers. This approach can potentially eliminate the need for band specific filters, which inhibits global operation of LTE handsets due to the diverse band plan. Further, using such methods in-band...
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...
A key issue impacting the transmit to receive (TX-RX) isolation in Electrical Balance (EB) Duplexers is dynamic matching of the antenna impedance by the balancing network. Circuit simulations including embedded antenna measurements have been used to investigate the variation in TX-RX isolation due to interaction with the user and the local environment. Simulated results at 847MHz and 1960MHz show...
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