The wideband active quasi-circulator developed by CityU allows simultaneous transmission and reception of signals from an antenna to different transmit and receive path signals without using separated filters. It enables a single device to operate in multiple bands and replace the separate blocks of.....
[更多]
The dual-polarized patch antennas designed by CityU are compatible with L-shaped probes, which are also invented by CityU. The L-shaped probe is connected to the input port, and part of it is parallel to the patch. The isolation enhancement technique inherent in this invention can reduce the strong .....
[更多]
The dielectric resonator antenna (DRA) has received increasing attention in recent years. It has a number of advantages including its small size, light weight, low cost, ease of excitation, and relative wide bandwidth as compared with the patch antenna. Also, it is a volume device that offers the de.....
[更多]
The Doherty power amplifier (DPA), a component used in wireless communication devices, has two sub-amplifiers operating at different power levels. The differing bias conditions usually lead to unbalanced current driving ability and efficiency reduction. Unlike common techniques employed to achieve i.....
[更多]
A universal driving technique for light emitting diodes (LEDs) is presented. The driver can operate with lighting fixtures for fluorescent lamps without requiring the replacement of any type of ballast circuitry or modifying the existing infrastructure of a lighting network. This technology provide.....
[更多]
| |< <- | [326] [327] [328] [329] [330] [331] [332] [333] [334] [335] [336] | -> >| |
