Triband RF Transceiver
Wireless testbeds provide the experimental facility to test the validity of algorithms and also to test different wireless system setup/configurations. In order to support the investigation into the Heterogeneous Wireless Access Network Research Testbed (HWANRT), we are currently designing and developing a triband RF transceiver.
Design, build, and test a portable wireless transceiver board capable of operating at the following three ISM bands,
900 MHz
2.4 GHz
5.7 GHz
The developed testbed has several advantages over off-the-shelf transceiver blocks including, but not limited to:
Convenient to perform testing at every frequency stage
Components/designs can be changed according to the requirements of testing scenarios
Low MDS( minimum detectable signal) (e.g., -62 dBm compared to -52 dBm for typical off-the-shelf transceiver boards)
Better LO stability (e.g., +/- 1 ppm, +/- 2.5 ppm compared to +/- 75 ppm for typical off-the-shelf transceiver boards)
External LO is not required, but can be used
Internal LO: NovaSource G2:
o Dual frequency bands from 45 MHz to 2.5 GHz
o PC controllable and standalone operation
o Frequency stability of +/- 1 ppm
2nd internal LO: Praxsym LO:
o Low phase noise with internal frequency reference
o Computer controlled, with stability of +/- 2.5 ppm.
Tripler is used
Component supplies:
o Minicircuits
o Microwave Circuits
o Nova Engineering
o Marki Microwave
o Pasternack Entp
o Praxsyms
o Staffol Brothers
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Top view |
Bottom view |
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Input signal
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Signal modulated to 70 MHz
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Signal up-converted to 2.4 GHz
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Signal transmitted
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Signal down-converted to 70 MHz
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Signal filtered and amplified
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Output signal
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