A diplexer-matching dual-band power amplifier LTCC module for IEEE 802.11a/b/g wireless LANs

We have developed a compact dual-band (2.4/5 GHz) power-amplifier module with a concurrent two-stage InGaP/GaAs HBT for triple-mode (IEEE 802.11a/b/g) WLANs. The proposed diplexer-matching network is three-dimensionally implemented in an LTCC substrate (5/spl times/5 mm). The module exhibits an outp...

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Bibliographic Details
Main Authors: Kunihiro, K., Yamanouchi, S., Miyazaki, T., Aoki, Y., Ikuina, K., Ohtsuka, T., Hida, H.
Format: Conference Proceeding
Language:English
Subjects:
Amplifiers
Applied sciences
Circuit properties
Costs
Dual band
Electric, optical and optoelectronic circuits
Electrical engineering. Electrical power engineering
Electronic circuits
Electronic equipment and fabrication. Passive components, printed wiring boards, connectics
Electronics
Exact sciences and technology
Impedance matching
Local area networks
Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits
National electric code
OFDM
Power amplifiers
Power electronics, power supplies
Power generation
Radiofrequency amplifiers
Wireless LAN
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Description
Summary:We have developed a compact dual-band (2.4/5 GHz) power-amplifier module with a concurrent two-stage InGaP/GaAs HBT for triple-mode (IEEE 802.11a/b/g) WLANs. The proposed diplexer-matching network is three-dimensionally implemented in an LTCC substrate (5/spl times/5 mm). The module exhibits an output power of 20 dBm at 2.4 GHz, and 18 dBm at 5.25 GHz with an error vector magnitude of 4-5% for a 54-Mbps OFDM signal. Our approach of using a concurrent dual-band PA reduces the size and cost by almost half compared with using a conventional parallel PA.
ISSN:1529-2517
2375-0995
DOI:10.1109/RFIC.2004.1320603