Abstract
This paper presents a 0.49 terahertz (THz) radiating source in 40 nm CMOS. The radiating source is composed of a cross-coupled oscillator, a differential tripler, a substrate integrated waveguide (SIW) based harmonic power extractor (HPE) and a folded dipole antenna. The HPE can optimize third harmonic power extraction and provide suppression of unwanted lower order harmonic leakage. The measured equivalent isotropically radiated power (EIRP) of the radiating source is −4.1 dBm. According to simulated antenna gain of 11.2 dB, the output power and DC-to-THz efficiency of the signal source can be calculated as −15.3 dBm and 0.173%, respectively. The output frequency can be tuned from 475 to 511 GHz within 10 dB EIRP variation.
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