Abstract
This letter introduces a newly developed 340-GHz subharmonic upconversion mixer, utilizing GaAs monolithic integration technology, for terahertz communication and imaging systems. The mixer features a designed antiparallel series planar Schottky diode pair for high output power. To achieve wideband circuit matching and low conversion loss (CL), RF/LO E-field probe in conjunction with an IF-LO diplexer/filter is codesigned with the diode pair. This makes the proposed mixer particularly suited for mixer-last transmitter systems. The fabricated upconversion mixer has been tested, demonstrating a minimum single-sideband (SSB) CL of 9.4 dB across the 311-349-GHz range. Notably, it achieves a maximum output power of -6.8 dBm. To the best of authors' knowledge, this is the highest output power reported so far for subharmonic mixers at approximately 340 GHz.
| Original language | English |
|---|---|
| Pages (from-to) | 927-930 |
| Number of pages | 4 |
| Journal | IEEE Microwave and Wireless Technology Letters |
| Volume | 34 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 2024 |
Keywords
- Mixer
- P1dB
- Schottky diode
- series diode pair
- upconversion
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