Invention Grant
US08682269B1 Method, system and apparatus for coupling multiple radio receivers to a receiving antenna
有权
用于将多个无线电接收机耦合到接收天线的方法,系统和装置
- Patent Title: Method, system and apparatus for coupling multiple radio receivers to a receiving antenna
- Patent Title (中): 用于将多个无线电接收机耦合到接收天线的方法,系统和装置
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Application No.: US13723884Application Date: 2012-12-21
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Publication No.: US08682269B1Publication Date: 2014-03-25
- Inventor: Gireesh Rajendran
- Applicant: Texas Instruments Incorporated
- Applicant Address: US TX Dallas
- Assignee: Texas Instruments Incorporated
- Current Assignee: Texas Instruments Incorporated
- Current Assignee Address: US TX Dallas
- Agent Ronald O. Neerings; Wade James Brady; Frederick J. Telecky, Jr.
- Main IPC: H04B1/16
- IPC: H04B1/16

Abstract:
A first radio receiver may be configured to receive an RF signal from an RF port and may comprise a first cascode amplifier configured to provide a primary RF signal on a primary path for processing by the first RF receiver and a bypass RF signal on a bypass path. A second radio receiver may be configured to receive a sum of the bypass RF signal and an amplified primary RF signal. As a result, the second radio receiver is coupled to the same RF port and the signal received by the second receiver is maintained constant irrespective of the RF signal current drawn by the first receiver. The product of the impedance of the tuned load of the first radio receiver and the gain of the amplifier amplifying the primary RF signal is set to unity.
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