Reconfigurable Antenna for MMMB Communication Systems
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Two frequency-reconfigurable antennas for Multi-Mode Multi-Band (MMMB) communication systems have been designed and combined in a space with limited volume, i.e. 40 x 20 x 6 mm. Each antenna can be reconfigured to operate at different frequency bands depending on the state of an embedded switch, which is implemented using a pin diode. The first antenna can be switched between the 0.82?0.96 GHz band (GSM/CDMA) and the 1.7-2.17 GHz band (DCS/PCS/WCDMA), which are cellular bands. The second antenna can be switched between the 3.4-3.6 GHz band (mWiMax) and the 2.3-2.5 GHz, 5.15-5.35 GHz bands (WiBro/WLAN 11a/ b/g/n), which are connectivity bands. The proposed combined antenna operates over both cellular bands and connectivity bands concurrently. Also, another reconfigurable antenna which is a ''Macro-micro frequency tuning antenna'' is presented for MMMB. Two frequency tuning diodes, a pin diode and a varactor, are incorporated into a meander type radiator. The pin diode is used for frequency switching (macro-tuning) between 2 GHz band and 5 GHz band. In addition, the varactor is used for frequency tuning (micro-tuning) within wireless service bands (2.3-2.48 GHz and 5.15-5.35 GHz) to produce constant antenna gain.
Abstract
Two frequency-reconfigurable antennas for Multi-Mode Multi-Band (MMMB) communication systems have been designed and combined in a space with limited volume, i.e. 40 x 20 x 6 mm. Each antenna can be reconfigured to operate at different frequency bands depending on the state of an embedded switch, which is implemented using a pin diode. The first antenna can be switched between the 0.82?0.96 GHz band (GSM/CDMA) and the 1.7-2.17 GHz band (DCS/PCS/WCDMA), which are cellular bands. The second antenna can be switched between the 3.4-3.6 GHz band (mWiMax) and the 2.3-2.5 GHz, 5.15-5.35 GHz bands (WiBro/WLAN 11a/ b/g/n), which are connectivity bands. The proposed combined antenna operates over both cellular bands and connectivity bands concurrently. Also, another reconfigurable antenna which is a ''Macro-micro frequency tuning antenna'' is presented for MMMB. Two frequency tuning diodes, a pin diode and a varactor, are incorporated into a meander type radiator. The pin diode is used for frequency switching (macro-tuning) between 2 GHz band and 5 GHz band. In addition, the varactor is used for frequency tuning (micro-tuning) within wireless service bands (2.3-2.48 GHz and 5.15-5.35 GHz) to produce constant antenna gain.
참고문헌 (11)
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