A kind of local oscillator signal configuration circuit and local oscillator signal configuration method
A local oscillator signal and circuit technology, applied in the direction of electrical components, automatic power control, etc., can solve the problems of high chip cost and power consumption, multiple currents, large area, etc., to reduce chip power consumption, reduce chip area, The effect of reducing chip cost
Active Publication Date: 2019-05-03
SANECHIPS TECH CO LTD
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Problems solved by technology
In a transceiver, the VCO and PLL usually occupy a larger area in the entire chip and consume more current, which requires the chip to have a large area to ensure the generation of local oscillator signals, resulting in cost and power consumption of the chip. consumption is too high
Method used
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[0034] In the embodiment of the present invention, local oscillator signals of different frequencies are generated by the local oscillator signal generation circuit; local oscillator signals of the same frequency or different frequencies are configured by the local oscillator signal control circuit.
[0035] The local oscillator signal generating circuit in the embodiment of the present invention includes at least two local oscillator signal generators capable of providing local oscillator signals of different frequencies. When the radio frequency transceiver works in the carrier aggregation mode, the local oscillator signal generating circuit outputs Local oscillator signals of two different frequencies; and when the RF transceiver works in the multiple-input multiple-output mode, since the RF transceiver only needs a single-frequency local oscillator signal, it is necessary to turn off the output circuit of one of the local oscillator signals, Drive multiple RF transceivers w...
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A circuit, configuring local oscillator signals, comprises: a local oscillator signal generation circuit (11) and a local oscillator signal control circuit (12), wherein the local oscillator signal generation circuit (11) is configured to generate the local oscillator signals at different frequencies; and the local oscillator signal control circuit (12) is configured to configure, according to operating modes of radio frequency transceivers (13), local oscillator signals for the radio frequency transceivers (13) to be at different frequencies or at an identical frequency. In addition, the present invention also provides a method of configuring a local oscillator signal, and a radio frequency transceiver and storage medium utilizing the same. The present invention effectively reduces a size of the generation circuit of the local oscillator signal in the radio frequency transceiver having carrier aggregation and multi-input and multi-output functions and reduces an area and power consumption of a chip.
Description
technical field [0001] The invention relates to the technical field of circuit design, in particular to a local oscillator signal configuration circuit and a local oscillator signal configuration method applied to carrier aggregation and multiple-input multiple-output radio frequency transceivers. Background technique [0002] With the popularization of mobile terminals, the market has a great demand for multi-mode and multi-band RF transceivers. During the working process, multi-mode and multi-band RF transceivers usually need multiple local oscillator signals of different frequencies or multiple same frequencies; For example, the current carrier aggregation and MIMO RF transceivers are the most widely used RF transceivers; when carrier aggregation and MIMO RF transceivers are used as carrier aggregation RF transceivers, voltage-controlled oscillators (VCO, Voltage-Controlled Oscillator) provides at least two local oscillator signals of different frequencies; when carrier a...
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IPC IPC(8): H03L7/099
CPCH03L7/099
Inventor 曾义
Owner SANECHIPS TECH CO LTD