Airoha Technology Corporation

Hsinchu, Taiwan

Airoha Technology Corporation

Hsinchu, Taiwan

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Patent
Airoha Technology Corporation | Date: 2016-07-21

A voice trigger method for an electronic apparatus is provided. The voice trigger method includes the following steps. Receive a current voice signal. Extract a current voice feature from the current voice signal. Determine whether a previous voice feature of a previous voice signal is stored. When the previous voice feature is stored, at least one of adjusting a confidence threshold and determining whether to wake up the electronic apparatus is performed according to whether the previous voice feature is corresponding to a false acceptance situation or a false rejection situation and the similarity between the current voice feature and the previous voice feature.


Patent
Airoha Technology Corporation | Date: 2016-07-06

A low-noise amplifier (LNA), a folded low-noise amplifier (folded LNA) and an amplifier circuit module are provided. The LNA includes a plurality of radio frequency (RF) input stages, at least one bias transistor and at least one radio frequency (RF) output stage. The bias transistor is connected to the RF input stages to provide a DC bias source to one of the RF input stages for isolating others of the RF input stages. The RF output stage is connected in parallel with the RF input stages, which share an adjustable input inductor.


Patent
Airoha Technology Corporation | Date: 2017-01-13

A switched-capacitor circuit is provided in the present disclosure. The switched-capacitor circuit includes a first capacitor, a first switch, an amplifier circuit, a second switch, and a second capacitor. The first capacitor includes a first end and a second end. The first switch is coupled between an input end and the first end of the first capacitor. The amplifier circuit includes a first input end, a second input end and an output end. The second switch is coupled between the second end of the first capacitor and the first input end of the amplifier circuit. The second capacitor is coupled between the first capacitor and a ground end. Wherein in a first cycle, the first switch is turned on and the second switch is turned off. And in a second cycle, the first switch is turned off and the second switch is turned on.


Patent
Airoha Technology Corporation | Date: 2017-01-13

A frequency divider and a control method thereof are provided. The frequency divider includes a phase selector and a control circuit. The phase selector receives N input signals, and selects a first input signal from the N input signals as an output signal according to N selection signals. The frequency of the N input signals are the same, and the phase of the N input signals are different, and every adjacent two of the N input signals have a phase difference of 360/N, wherein N is a positive integer larger than 2. The control circuit updates the N selection signals according to the output signal, such that the phase selector switches the output signal from the first input signal to a second input signal of the N input signals, wherein the phase of the second input signal leads the phase of the first input signal by 360/N.


The present invention is related to a communication device capable of self-detecting operation status and detecting method thereof. The communication device comprises at least one communication module and a control module. The communication module is capable of self-detecting operation status, so as to generate at least one status information. The control module is allowed to read out the status information of the communication module via a Mobile Industry Processor Interface (MIPI). When the need for the adjustment of operation status of the communication module is diagnosed by the control module, a control signal is generated, and the control signal is transmitted to the communication module via the MIPI, so as to adjust operation status of the communication module. As such, the communication module may be operated under its best status, and also reduce the probability of overheating or abnormal operation.


Patent
AIROHA TECHNOLOGY Corporation | Date: 2016-03-18

A wideband front-end device comprises a wideband amplifying module and a plurality of narrow band filters. The wideband amplifying module comprises an input end, a plurality connecting ends and at least one receiving end. A wideband transmitting RF signal can be transmitted to one of the connecting ends from the input end according to the frequency band thereof. Thus, the wideband transmitting RF signal can be divided into several narrow band signals with different frequency bands. Each narrow band signal with different frequency bands is transmitted to different connecting ends and narrow band filters respectively. Therefore, each narrow band filter can be used to filter wideband transmitting RF signal or narrow band signals with different frequency bands respectively to reduce production costs of the wideband front-end device.


Patent
AIROHA TECHNOLOGY Corporation | Date: 2016-03-08

The present invention relates to a control method of an RF switch module. The RF switch module comprises a control device and a switch device. The control device is electrically connected to the switch device, and the control device is able to provide a control voltage to the switch device, and turn on or turn off the switch device. Further, the control device determines frequency or voltage value of the control voltage provided to the switch device according to the power or frequency of an RF signal transmitted by the switch device.


Patent
AIROHA TECHNOLOGY Corporation | Date: 2016-01-07

A method for improving circuit stability is disclosed. In the method of the present invention, the circuit is analyzed to find the frequency band in which the input impedance at a target node behaves as a negative resistance, and then find the signal path of the frequency band in the matching circuit in front of the target node and add an attenuator in the signal path. This prevents the circuit from oscillation and improves the stability of the circuit. Furthermore, the signal on the main signal path will not be attenuated and the performance of the circuit will be maintained.


Patent
AIROHA TECHNOLOGY Corporation | Date: 2016-02-17

The present invention relates to a power control method of an amplifying module. The amplifying module comprises a control device and an amplifying device, wherein the control device is electrically connected to the amplifying device and provides a bias current and a supply voltage to the amplifying device. Further, the control device is able to adjust the supply voltage, the bias current or the bias voltage provided to the amplifying device according to the power mode of the amplifying device.


Patent
AIROHA TECHNOLOGY Corporation | Date: 2016-01-20

The present invention relates to a low loss antenna switch. The antenna switch comprises a plurality of switch module and a plurality of transmitting/receiving terminals, wherein one end of each switch module is connected to an antenna unit and the other end of each switch module is connected to each transmitting and receiving end respectively. Further, each switch module comprises a plurality of switch units in series, wherein the width of at least one switch unit is smaller than other switch units of each switch module. Thus, the parasitic capacitance of the off-stage switch modules can be reduced, and VSWR (Voltage Standing Wave Ratio) of the antenna switch also can be improved.

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