一种单路开环对消电路设计

Design of a Novel Open Ring Cancellation Circuit

文中设计一种形式新颖的开环对消电路 ,用于提高收发天线的隔离度 .它由耦合器、衰减器、移相电路和加法器组成。具有宽频带 ,结构简单 ,体积小等特点。试验结果表明 ,此对消电路可在 40 0 MHz工作频段内实现 1 0 d

In the paper, a novel open ring cancellation circuit is designed to improve isolation between antennas. It is composed of directional coupler, controllable attenuator, delay line and adder.It has the specialty of broadband,simple configuration and small size. This cancellation circuit provides 10dB cancellation ratio in 400MHz.