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We present the first monolithically integrated semiconductor pulse source consisting of a mode-locked laser diode, Mach-Zehnder pulse picker, and semiconductor optical amplifier. Pairs of 5.6 ps pulses are generated at a 250 MHz repetition rate.
A 60 GHz 4 × 4 circular polarized (CP) patch array antenna with a 90 nm CMOS OOK modulator are designed and integrated in low temperature cofired ceramic (LTCC) substrate to form a SiP-based transmitter. By applying a stripline sequential rotation feeding scheme, the CP array exhibits a wide impedance bandwidth (VSWR<;2) and 3 dB axial ratio (AR) bandwidth, both over 8 GHz. It has a beam-shaped...
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