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介绍如何利用SA601或SA620芯片实现433MHz频率应
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2009-06-04
杨平
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Although designed for 1GHz, the SA601 and SA620 can also be
used in the 433MHz ISM band. The SA601 performs amplification
of the antenna signal and down conversion to a first IF. The SA620
has the same functionality, but also has a VCO on-chip. This VCO
drives the mixer, so no external LO signal is required.
Applying the SA601 or SA620 means that a receiver with high
sensitivity and wide dynamic range can be built without a lot of
external components. The design will be easier compared with
discrete Front Ends.
used in the 433MHz ISM band. The SA601 performs amplification
of the antenna signal and down conversion to a first IF. The SA620
has the same functionality, but also has a VCO on-chip. This VCO
drives the mixer, so no external LO signal is required.
Applying the SA601 or SA620 means that a receiver with high
sensitivity and wide dynamic range can be built without a lot of
external components. The design will be easier compared with
discrete Front Ends.
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