Abstract
An octa-band WWAN/LTE monopole antenna with a size of 80mm × 8mm × 5.8mm for 5.7-inch mobile phones is proposed and studied. The proposed antenna consists of a folded metal plate with a lumped-element high-pass matching circuit. The working mechanism is analyzed based on the S-parameters and the surface current distributions. The 0.25-wavelength, 0.5-wavelength, and 1-wavelength modes of the monopole antenna are excited and used. The attractive merit of the proposed antenna is that the height of the nonground portion is only 8 mm. A prototype is fabricated and measured. Its measured -6 dB impedance bandwidths are 290 MHz (0.69-0.98 GHz) and 1.11 GHz (1.63-2.74 GHz) which cover the LTE700, GSM850, GSM900, GSM1800, GSM1900, UMTS, LTE2300, and LTE2500 bands. Within the two frequency bands, good radiation performances are obtained.
| Original language | English |
|---|---|
| Article number | 7337382 |
| Pages (from-to) | 383-388 |
| Number of pages | 6 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 64 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Jan 2016 |
| Externally published | Yes |
Keywords
- Mobile antenna
- Mobile phone
- Nonground portion
- Small size
- Wideband/multiband