Abstract
A dual-band coaperture monopolar antenna with a very low profile is investigated in this communication. A novel cross-layer folded structure is proposed to construct a single-band monopolar antenna in the lower band. It can provide enough space for another higher band section to be integrated together without extra profile. Meanwhile, by adding a high-frequency radiation element to the reserved space, a dual-band coaperture antenna with independent frequency control is obtained. Moreover, by exciting TM01 and TM02 modes in both bands, the proposed antenna can achieve a relatively large impedance bandwidth of 10.9% in the lower band and 14.6% in the upper band with a thickness of 3.14 mm. Stable monopole-like radiation patterns are achieved within the two bands and the gains in the lower and upper bands are 5.2-5.8 and 3.7-5 dBi, respectively. Compared with other works, the proposed antenna features its low-profile and independent band performance.
| Original language | English |
|---|---|
| Pages (from-to) | 6936-6940 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Antennas and Propagation |
| Volume | 69 |
| Issue number | 10 |
| DOIs | |
| State | Published - 1 Oct 2021 |
| Externally published | Yes |
Keywords
- Dual-band
- Low-profile
- Monopole-like pattern
- Wideband antenna
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