Phase shifters and phase shifting methods
A phase shifter and adder technology, applied in the communication field, can solve the problems of high oscillator design complexity and high power consumption, and achieve the effect of reducing design complexity, reducing power consumption, and achieving low complexity
Active Publication Date: 2016-06-08
HUAWEI TECH CO LTD
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Problems solved by technology
[0005] Embodiments of the present invention provide a phase shifter and a phase shifting method to solve the problem that in the prior art, the oscillation frequency of the oscillator increases with the increase of the required phase, resulting in higher design complexity and lower power consumption of the oscillator. big problem
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[0051] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0052] figure 2 It is a schematic structural diagram of the first embodiment of the phase shifter of the present invention, such as figure 2 As shown, the device of this embodiment may include: a divide-by-two frequency divider 1 and at least one vector adder 2 connected to the divide-by-two frequency divider 1, where the vector adde...
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The embodiment of the invention provides a phase shifter and a phase shifting method. The phase shifter comprises a divide-by-2 frequency divider and at least one vector adder connected with the divide-by-2 frequency divider; the divide-by-2 frequency divider is used for generating four orthorhombic initial signals in sequence according to two input inversed phase signals; the vector adder is used for adjusting the amplitude proportion of every two orthorhombic initial signals in four initial signals, conducting the vector addition on every two orthorhombic signals after adjusting the amplitude proportion, and generating four orthorhombic local oscillator (LO) signals in sequence. With the adoption of the phase shifter and the phase shifting method, the design complexity and the power consumption of an oscillator can be reduced; furthermore, the LO signals at various phase positions can be flexibly generated.
Description
Technical field [0001] The embodiment of the present invention relates to communication technology, and in particular to a phase shifter and a phase shift method. Background technique [0002] Existing communication systems often need to use oscillators, such as voltage-controlled oscillators (VoltageControlled Oscillator, hereinafter referred to as: VCO) output signals to generate local oscillators (LocalOscillation, hereinafter referred to as: LO) signals of different phases, so that they can be used in signal transmission and reception. The LO signal of the required phase is modulated and demodulated. [0003] In the prior art, a two-frequency division method is often used to generate various phase-shifted LO signals. figure 1 A schematic diagram of the circuit structure that generates LO signals with multiple phases for the existing two-frequency division, such as figure 1 As shown, the two phase differences produced by the VCO are 180° and the frequency is f 0 The signal is in...
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IPC IPC(8): H03H11/22
Inventor 袁海泉陈永权杨帆高鹏
Owner HUAWEI TECH CO LTD