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Wei Hong

Articles by Wei Hong
Transmitter/Receiver Manages MIMO

Fast data transfers usually require large bandwidths. But the use of multiple-input, multiple-output (MIMO) antenna techniques can also boost data rates for available bandwidths, as shown with this high-performance two-way transmitter and receiver design operating with a 100-MHz bandwidth at 8.05 GHz. It boasts excellent performance, with a receiver noise figure of 2.7 dB and transmitter output power of +17 dBm at 8.05 GHz and associated third-order intermodulation (IM3) level of −41.4 dBc.

Front End Fits SDR Picocells
This compact RF front end meets the needs of multi-band, multimode transmit and receive requirements in software-defined-radio (SDR) picocell stations.
Tune Out Spurious In Dual-Mode BPFs
By optimizing a microstrip filters coupling structure, it is possible to achieve small size and wide rejection bandwidth while accounting for fabrication tolerances.
TD-SCDMA Receiver Captures Multiple Channels
This high-performance receiver works with multiple active antenna modules and a digital intermediate-frequency (IF) stage to support wireless multicarrier and diversity receiving systems.
Equalize RF Amplifiers With Bandpass Filters
The amplitude response of a broadband RF transmit amplifier can be dramatically flattened by using the complementary characteristic of a bandpass filter.
Optimized Transceiver Aids Broadband Wireless Access
This compact module is based on commercial ICs and standard PCB substrate, with the clever placement of filters to suppress unwanted transmitter spurious products.

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