excessively large rectennas, while a 30 m antenna produces near-field beam instabilities extending well past 5 km. A 20 meter antenna also has 5 km in its near- field, but simulation results show near-field degradations to be small when the rectenna is as large (or larger than) the antenna. Therefore the best sizing configuration for 5.8 GHz operations is (A) a 20 m antenna transmitting to a 30 m rectenna over 5 km, or (B) a 30 m antenna and 40 m rectenna at 10 km separation. Microwave sizing tradeoffs at 5.8 GHz are further shown in Fig. 12. Beam transmission ranges can extend to 15 km or more with the proper combination of antenna/rectenna sizings. For a given range, antenna and rectenna sizes may be interchanged provided the value of RTrR remains constant in Eq. 1. Hence a 20 m
RkJQdWJsaXNoZXIy MTU5NjU0Mg==