H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 1/18 (2006.01) H04B 1/48 (2006.01) H04B 7/08 (2006.01)
Patent
CA 2125817
ABSTRACT OF THE DISCLOSURE An antenna switching circuit comprises a first amplifier including a first FET (T1) receiving a first receive signal from a first antenna (41) at a gate of the FET, and amplifying the first receive signal, and outputting the amplified signal via a drain of the first FET to an output terminal (13), and a second amplifier including a second FET (T2) receiving a second receive signal from a second antenna (42) at a gate of the second FET, and amplifying the second receive signal and outputting the amplified signal via a drain of the second FET to the output terminal (13). The first and second FETs are coupled to receive, at their drains, first and second control signals complementary to each other so that one of them is made active while the other is made inactive depending on values of the first and second control signals. The consumption current is reduced, and in addition, an amplifier in a receiver provided to receive the output of the antenna switching circuit may be omitted.
Ando Hiroshi
Katsuyama Tsutomu
Fetherstonhaugh & Co.
Oki Electric Industry Co. Ltd.
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