US 10,541,715 B1Granted

Dual-mode wireless transceiver device

AssigneeRealtek Semiconductor Corp.

InventorWei-Chen Lin

Life of this patent

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Abstract

A wireless transceiver device includes an operation amplification circuit, a transmitter circuit, a receiver circuit, and a transceiver control circuit. The operation amplification circuit, according to a rate parameter and a filtering parameter, filters and amplifies an input signal and outputs a processed signal. The transmitter circuit selectively uses a first ratio or second ratio as the amplification parameter, converts an input signal into an analog signal, inputs the analog signal into the operation amplification circuit, mixes the processed signal with a local oscillating frequency and then output an output signal. The receiver circuit mixes an external signal with another local oscillating frequency, inputs the mixed signal into the operation amplification circuit, and converts the processed signal into a digital signal. The transceiver control circuit selectively and electrically connects the operation amplification circuit with the transmitter circuit or the receiver circuit.

Claims16

Dependent claims

A dual-mode wireless transceiver device, comprising:

a digital-to-analog conversion circuit, adapted to be operated in a first mode and a second mode, wherein in the first mode, the digital-to-analog conversion circuit is configured to convert a first input signal into an input analog signal;
and in the second mode, the digital-to-analog conversion circuit is configured to convert a second input signal into the input analog signal;
a second mixer circuit, adapted to be operated in a third mode and a fourth mode, wherein in the third mode, the second mixer circuit is configured to mix a first external signal and a third local frequency to output an intermediate-frequency signal;
and in the fourth mode, the second mixer circuit is configured to mix a second external signal and a fourth local frequency to output the intermediate-frequency signal;
a filter amplifier circuit, adapted to be operated in the first, the second, the third, and the fourth mode, wherein in the first and the second mode, the filter amplifier circuit is configured to filter and amplify the input analog signal to output a processed signal;
and in the third and the fourth mode, the filter amplifier circuit is configured to filter and amplify the intermediate-frequency signal to output the processed signal;
a first mixer circuit, adapted to be operated in the first and the second mode, wherein in the first mode, the first mixer circuit is configured to mix the processed signal and a first local frequency to output an output signal;
and in the second mode, the first mixer circuit is configured to mix the processed signal and a second local frequency to output the output signal;
an analog-to-digital conversion circuit, adapted to be operated in the third and the fourth mode, wherein the analog-to-digital conversion circuit is configured to convert the processed signal into a digital signal;
and
a transceiver control circuit, configured to control the digital-to-analog conversion circuit, the second mixer circuit, the filter amplifier circuit, the first mixer circuit, and the analog-to-digital conversion circuit to be operated in the first, the second, the third, or the fourth mode.

8 more elements

A dual-mode wireless transceiver device, comprising:

an operation amplification circuit, having an input end and an output end, wherein after the operation amplification circuit filters and amplifies, according to a rate parameter and a filtering parameter, a signal input from the input end, the operation amplification circuit outputs the signal from the output end;
a transmitter circuit, having a first rate and a second rate, wherein the transmitter circuit performs digital-to-analog conversion processing, performs filtering and amplification by using the operation amplification circuit, and performs first mixing on the input signal by using the first or the second rate as the rate parameter selectively, to output an output signal;
a receiver circuit, having a third rate and a fourth rate, wherein the receiver circuit performs second mixing, performs filtering and amplification by using the operation amplification circuit, and performs analog-to-digital conversion processing on an external signal by using the third or the fourth rate as the rate parameter selectively, to output a digital signal;
and
a transceiver control circuit, selectively and electrically connecting the operation amplification circuit to the transmitter circuit or the receiver circuit.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application: 16/371,602Filed 1 Apr 2019
Priority: TW 107125794 A25 Jul 2018
Published: US 2020/0036407 A130 Jan 2020
Granted: 21 Jan 2020
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

H04B 1/401
Circuits: for selecting or indicating operating mode
H03F 1/56
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements: modifications of…
H03F 3/45
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements: differential amplifiers
H03F 3/45475
Characterised by the way of implementation of the active amplifying circuit in the differential amplifier: using IC blocks as the active…