Analysis and Design of a Cascaded Distributed Dual-band Bandpass Amplifier for 2.4 GHz and 5 GHz WLAN Receiver
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Abstract
This paper presents the analysis and design of a cascaded distributed dual-band bandpass amplifier for 2.4 GHz and 5 GHz WLAN receiver. Frequency analysis uses the multi-resonances technique in which both passband frequencies are accurately determined. The design and component values in simulations are defined by the explained procedure. The simulated results show that at 2.4 GHz the power gain and bandwidth are 22.2 dB and 0.495 GHz while at 5 GHz the power gain and bandwidth are 23.5 dB and 0.65 GHz, respectively. Fractional bandwidths (FBW) are 20.6% and 13% at 2.4 GHz and 5 GHz. Input/output isolation is less than –47 dB. The output 1 dB compression point at output port P2 and P3 are –22 dBm and –20.2 dBm, respectively. Current and power consumptions are 14 mA and 24 mW at a 1.5 V supply voltage. These results agree well with the theoretical analysis.
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References
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