发明授权
- 专利标题: Apparatus and method for isolation and power handling in a radio frequency switch
- 专利标题(中): 射频开关中隔离和功率处理的装置和方法
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申请号: US12426395申请日: 2009-04-20
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公开(公告)号: US08064847B2公开(公告)日: 2011-11-22
- 发明人: Glen B. Backes
- 申请人: Glen B. Backes
- 申请人地址: US NJ Morristown
- 专利权人: Honeywell International Inc.
- 当前专利权人: Honeywell International Inc.
- 当前专利权人地址: US NJ Morristown
- 代理机构: Fogg & Powers LLC
- 主分类号: H04B1/44
- IPC分类号: H04B1/44
摘要:
A transmit/receive switching circuit is provided. The transmit/receive switching circuit comprises a first transformer to split a transmission signal into a first split transmission signal and a second split transmission signal. The first split transmission signal is out of phase with the second split transmission signal. The transmit/receive switching circuit also comprises a second transformer to split a received signal into a first split received signal and a second split received signal and to combine the first split transmission signal and the second split transmission signal. The first split received signal is out of phase with the second split received signal. The combined transmission signal is supplied to an antenna port and the received signal is received from the antenna port. The transmit/receive switching circuit also comprises a third transformer to combine the first split received signal and the second split received signal and to supply the combined received signal to a receive port of the transmit/receive switch. Finally, the transmit/receive switching circuit comprises first and second switches. Both the first and second switches are coupled to the first transformer and to the second transformer. The first switch switches between coupling the first split transmission signal to the second transformer and coupling the first split received signal to the third transformer. The second switch switches between coupling the second split transmission signal to the second transformer and coupling the second split received signal to the third transformer.
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