Industrial Technology Research Institute

Chang-Ming Lai

Ping-Hsun Wu

Jian-Yu Li

Je-Kuan Jau

Sheng-Feng Lee

Chia-Hao Tu

An RF receiver/transmitter apparatus for carrier aggregation is disclosed, to provide a routing circuitry formed by a plurality of mixer modules for achieving both the function of carrier aggregation and the mixing frequency process of signals. This architecture allows sharing an RF front-end, improving degree of integration, and reducing hardware cost and circuitry power consumption. In addition, in the process of reception and transmission, the apparatus may perform different processing and configuration for each sub-channel to increase circuit design flexibility. The receiver apparatus includes at least one antenna, a first signal processing unit, a routing mixer device, a second signal processing unit and a digital signal processor (DSP); and the routing mixer device includes a plurality of mixer module and a plurality of current/voltage adders to achieve signal routing control through opening or closing of the mixer, switching the signal transmission path or switching the signal synthesizer.

Receiver and transmitter apparatus for carrier aggregation

A multi-carrier receiver, multi-carrier transmitter and a multi-carrier transceiver system are provided. The multi-carrier receiver includes a first processing unit, a router and a second processing unit. The first processing unit has M first processing paths, applies intensity processing on at least a RF signal for outputting sub-carrier signals. The router has M input terminals and N output terminals, where the M input terminals are respectively coupled to the M first processing paths and receive the sub-carrier signals. The router outputs the sub-carrier signals to the N output terminals and the received signal at each output terminal of the router includes the sub-carrier signal at each input terminal. The second processing unit has N second processing paths respectively coupled to the N output terminals for demodulating the sub-carrier signals and applies an analog-to-digital conversion on the demodulated signals for generating digital signals, where M and N are greater than 0.

Multi-carrier receiver, multi-carrier transmitter and multi-carrier transceiver system

A multi-carrier receiver, multi-carrier transmitter and a multi-carrier transceiver system are provided. The multi-carrier receiver includes at least a first processing unit, a routed switch and a second processing unit. The first processing unit has M first processing paths, performs intensity processing to at least one RF signal for outputting sub-carrier signals. The routed switch has M input terminals and N output terminals, where the M input terminals are respectively coupled to the M first processing paths and receive the sub-carrier signals. The routed switch connects each input terminal to at least one output terminal or none of the output terminals according to a control signal. The second processing unit has N second processing paths respectively coupled to the N output terminals for demodulating the sub-carrier signals and performing an analog-to-digital conversion to the demodulated signals for generating digital signals, where M and N are greater than 0.

A power amplifier system, a control method thereof, and a control device thereof are provided. The power amplifier system operates in a non-linear switching mode according to an envelope amplitude of an input signal under control of the control device. When the power amplifier is operated in the non-linear switching mode, a supply voltage and an input signal of the power amplifier are provided to the power amplifier by the control device according to pre-measured properties of the power amplifier so as to equip the power amplifier with a high power-added efficiency (PAE) and a better linearity.

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Chiayi, Taiwan

Chang-Ming Lai