Enrichment of package antenna approach with dual feeds, guard ring, and fences of vias
This paper enriches the package antenna approach to wireless modules by introducing the dual feeds, the guard ring, and fences of vias. The dual feeds enable the antenna for not only single-ended but also differential signal operations. The guard ring and fences of vias reduce t...
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| Main Author: | |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
2010
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/91840 http://hdl.handle.net/10220/6240 |
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| Institution: | Nanyang Technological University |
| Language: | English |
| Summary: | This paper enriches the package antenna approach to wireless modules by introducing the dual feeds, the guard ring,
and fences of vias. The dual feeds enable the antenna for not only
single-ended but also differential signal operations. The guard
ring and fences of vias reduce the antenna backward radiation
and improve the isolation between the antenna and radio chip.
The design guideline of the guard ring and fence of vias for the
package antenna approach is developed for the first time. An
example antenna of this package approach using a microstrip
patch radiator has been designed and fabricated in a low-temperature
cofired ceramic (LTCC) technology for the wireless
modules operating at the 5-GHz band. The antenna has a size
of 17x17x2 mm3 and contains the open cavity that is large
enough to accommodate a radio chip of current size. Simulated
and measured input impedance matching and far-field radiation
properties are discussed. They show that the antenna achieves
over 2.2% bandwidth while maintaining 90% efficiency. |
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