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Direct RF undersampling technique has been focused to realize compact and low power consumption receiver. This architecture does not require the LO section and downconverter, but it requires relatively high gain LNA. In this paper, we investigate the usage of power switching (intermittent-mode) LNA to reduce the power consumption. When we simply apply the intermittent-mode LNA, the SNR of the RF undersampling...
We have developed a high speed gate switching type Ku-band CMOS amplifier for direct RF undersampling receiver. This amplifier will synchronize its d.c. power switch timing to the sampling clock of the direct RF undersampling receiver. For Ku-band VSAT application, we designed the sampling clock frequency of undersampling receiver as 600 MHz, therefore the power switching time (Turn-On Time) of less...
The design and measured results of a 120 GHz / 140 GHz dual-channel amplitude shift keying (ASK) receiver are presented in this paper. Because a signal with very wide frequency width of over 10 GHz is difficult to process in a single-channel transceiver, a dual-channel configuration with channel selection is adopted in the proposed receiver. The proposed receiver is fabricated using standard 65 nm...
The design and measured results of a 120 GHz / 140 GHz dual-channel amplitude shift keying (ASK) receiver are presented in this paper. Because a signal with very wide frequency width of over 10 GHz is difficult to process in a single-channel transceiver, a dual-channel configuration with channel selection is adopted in the proposed receiver. The proposed receiver is fabricated using standard 65 nm...
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