Abstract
A receiving antenna with a matched load will always scatter some power. This paper sets an upper and a lower bound on the absorption efficiency (absorbed power over sum of absorbed and scattered powers), which lies between 0 and 100% depending on the directivities of the antenna and scatter patterns. It can approach 100% as closely as desired, although in practice this may not be an attractive solution. An example with a small endfire array of dipoles shows an efficiency of 93%. Several examples of small conical horn antennas are also given, and they all have absorption efficiencies less than 50%.
| Original language | English |
|---|---|
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 53 |
| Issue number | 9 |
| Pages (from-to) | 2843-2849 |
| Number of pages | 6 |
| ISSN | 0018-926X |
| Publication status | Published - 2005 |