Due to the growing demand for renewable energy sources (“green energy”), the manufacturing of photovoltaic devices has been steadily increased. Photovoltaic devices convert light energy to electricity. One type of photovoltaic device is a photovoltaic module. Many commercially available photovoltaic.....
[更多]
The heat-reclaim liquid-filled glazing system includes a double-pane window glazing with a water-to-water heat exchanger. Two distribution headers are connected to the heat exchanger through insulated distribution tubes attached to the two sides of the window frame. The sealed space between the glas.....
[更多]
A surface absorption modifier is developed to treat highly absorbent aggregates, and this patent concerns the application process of the surface modifier. Traditionally, aggregates such as sand and gravels are used to produce concrete but the decrease in granite supply leads to the application of re.....
[更多]
Some handheld electronic devices that require a directional pattern are equipped with directional printed antennas, along with a large ground plane. However, such an arrangement is cumbersome and expensive for small devices. The drawback inspires the invention of this novel unidirectional antenna fo.....
[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]
| |< <- | [326] [327] [328] [329] [330] [331] [332] [333] [334] [335] [336] | -> >| |
