CN106953661A - A kind of binary channels low-power consumption transceiver - Google Patents

Abstract

The invention discloses a kind of binary channels low-power consumption receiver, including low-noise amplifier, phase-synchronized oscillator, quadrature oscillator, inphase mixer, orthogonal mixer, with phase variable gain amplifier, orthogonal variable gain amplifier, adder, positive frequency complex filter and negative frequency complex filter.The output of phase-synchronized oscillator is mixed with input signal in inphase mixer, and the output of quadrature oscillator is mixed with input signal in orthogonal mixer.The output of two frequency mixers is respectively by same phase variable gain amplifier and orthogonal variable gain amplifier, and the output of two amplifiers is added in adder.The output of adder by positive frequency complex filter and negative frequency complex filter, obtains the output of two passages respectively.The present invention uses a set of receiving device, while receiving the signal of two passages, saves hardware spending, reduces the complexity of system, reduce power consumption, is adapted to the receive-transmit system of multi channel signals.

Description

A kind of binary channels low-power consumption transceiver

Technical field

The present invention relates to radio communication and radio circuit design field, especially receiver radio frequency front end system structure.ThisInvention is specifically related to a kind of while the receiver of two channel signals of reception, by the way of frequency division multiplexing, uses a receptionMachine receives two paths of signals simultaneously, and to this two paths of signals while down coversion, converts it to low frequency, be easy to digital circuit to carry outProcessing.

Background technology

Communication system can be communicated by the way of frequency division multiplexing, to improve the efficiency of communication.But to different frequenciesThe signal of section, or by the way of multi-frequency multi-mode, by different configurations, timesharing receives signal, or for different hairsSignal is penetrated, a few set receiving devices are respectively adopted, are received in different frequency ranges, to improve the efficiency of system.Multi-frequency multi-mode connectsReceipts machine is using a receiver, although by different settings, can receive the signal of different frequency range, but can not receive simultaneously notWith the signal of frequency range, and need to switch local frequency, start wave filter etc., the time for setting up receiving channel is longer, and rightEach road signal is unable to global optimization.To many set receiver systems, while multiple signals are received, as a result of many set circuit mouldsBlock, power consumption is multiplied.

The content of the invention

It is an object of the present invention to provide a kind of receiver system structure, low-power consumption is wanted to meet wireless radio frequency receiversAsk.

In order to solve the above problems, the present invention provides a kind of two-channel receiver system, including:Low-noise amplifier, togetherOscillator phase, quadrature oscillator, inphase mixer, orthogonal mixer, with phase variable gain amplifier, orthogonal variable gain amplificationDevice, adder, positive frequency complex filter and negative frequency complex filter.

The rf inputs of inphase mixer and orthogonal mixer all connect the output of low-noise amplifier, inphase mixerLocal oscillator port connect the output of phase-synchronized oscillator, the local oscillator port of orthogonal mixer connects the output of quadrature oscillator.

The output of inphase mixer and orthogonal mixer is directly added, and exports multiple to positive frequency complex filter and negative frequencyWavenumber filter.

Positive frequency complex filter reserve channel I inband signaling, suppresses out-of-band interference；Negative frequency complex filter retainsPassage Q inband signaling, suppresses out-of-band interference.

Brief description of the drawings

Fig. 1 is the low work(receiver system structure chart of binary channels.

Embodiment

The present invention is described in detail below in conjunction with the accompanying drawings, as shown in figure 1, the low work(receiver system of binary channels, by low-noise amplifier,Phase-synchronized oscillator, quadrature oscillator, inphase mixer, orthogonal mixer, with phase variable gain amplifier, orthogonal variable gain is putBig device, adder, positive frequency complex filter and negative frequency complex filter composition.

Radio-frequency input signals, which is directly inputted, gives low-noise amplifier (01), and the output connection of low-noise amplifier (01) is orthogonalThe input of oscillator (02) and inphase mixer (03).

The local oscillator input of the output connection inphase mixer (04) of phase-synchronized oscillator (02), the output of quadrature oscillator (03)Connect the local oscillator input of orthogonal mixer (05).

The output of inphase mixer (04) connects the input with phase variable gain amplifier (06), orthogonal mixer (05)The input of output connection orthogonal variable gain amplifier (07).

Output with phase variable gain amplifier (06) with the output of orthogonal variable gain amplifier (07) is connected adder(08) two inputs.

The output of adder (08) connects input and the negative frequency complex filter of positive frequency complex filter (09) simultaneously(10) input.

Positive frequency complex filter (09) is output as passage I output, and negative frequency complex filter (10) is output asPassage Q output.

The foregoing is only presently preferred embodiments of the present invention, it is all structure disclosed in this invention is made any simply repairChange, change and equivalent structure change, belong within the protection domain of technical solution of the present invention.

Claims (4)

1. a kind of binary channels low-power consumption receiver, it is characterised in that a kind of described binary channels low-power consumption receiver, including low noiseAcoustic amplifier, phase-synchronized oscillator, quadrature oscillator, inphase mixer, orthogonal mixer is orthogonal with phase variable gain amplifierVariable gain amplifier, adder, positive frequency complex filter and negative frequency complex filter, using a set of receiving device, togetherWhen receive two passages signal.

2. a kind of binary channels low-power consumption receiver according to claim 1, it is characterised in that distinguish two by orthogonal mixingRoad signal.

3. a kind of binary channels low-power consumption receiver according to claim 1, it is characterised in that in analog domain first to mutually mixedFrequency signal is added with quadrature mixing signals, then is made a distinction by complex filter.

4. a kind of binary channels low-power consumption receiver according to claim 1, it is characterised in that pass through positive frequency complex filterDevice and negative frequency complex filter respectively obtain the signal of two passages.