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This letter proposes a wideband active double-pole double-throw (DPDT) switch for wideband phased array antennas, which realizes multi-octave bandwidth with positive gain and 4-way switching operation using a bi-directional distributed amplifier technique. The measured gain is 2.0–6.0 dB and the input and output return losses are better than 9 dB from 2–22 GHz. The isolation is over 15 dB and the...
This paper presents an X/Ku-band bi-directional true time delay T/R chipset in 0.13 µm CMOS technology for wideband phased array antenna. The T/R chipset comprises of wideband bi-directional distributed gain amplifiers (BDGA), a 7-bit true time delay (TTD) circuit, and a 6-bit digital step attenuator. The tuning bits are included in TTD (2-bit) and DSA (2-bit) for the amplitude and group delay error...
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