Abstract
In this letter, a subarray optimization to improve G/T of an active array antenna is presented. To optimize G/T, an equation for G/T is derived by calculating the formulas of the gain and noise temperature in the active array antenna. By using G/T and the peak sidelobe level of a scanned beam, the cost function is defined. Applying this cost function to the subarray optimization, a G/T value of 5.68 dB/K is obtained. To demonstrate the improved G/T, the subarray optimization without considering G/T is also conducted. Because G/T is not considered, some cases having low G/T is occurred. Compared to the worst case from these results, the proposed subarray optimization strategy improves G/T by 1.01 dB/K.
| Original language | English |
|---|---|
| Article number | 8828072 |
| Pages (from-to) | 2214-2218 |
| Number of pages | 5 |
| Journal | IEEE Antennas and Wireless Propagation Letters |
| Volume | 18 |
| Issue number | 10 |
| DOIs | |
| State | Published - Oct 2019 |
Keywords
- Active array antenna
- Mutual coupling
- Phased array
- Receive system
- Subarray optimization
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