Tera-hertz silica-based quadrupler and frequency multiplier

Abstract

The invention discloses a tera-hertz silica-based quadrupler and a frequency multiplier, belonging to the field of RFIC (Radio Frequency Integrated Circuit). The quadrupler comprises transistors (M1 and M2) and transmission lines (L1, L2 and L-1), wherein the drain ends of the transistors (M1 and M2) are respectively connected to an output port through the transmission lines (L1 and L2), source ends are connected with a ground line, grid ends are respectively connected with the signal input ends of an path (I) and the path (Q) of a baseband signal (f0); the transmission line (L-1) is connected between the output port and a power supply; and the length of the transmission lines (L1 and L2) are 1/4 of that of the corresponding wavelength of a signal (2f0), the length of the transmission line (L-1) is 1/4 of that of the corresponding wavelength of a signal (4f0). The multi-frequency multiplier comprises a 2n frequency multiplier (1), a 2n frequency multiplier (2) and a transmission line (L), wherein the output ports of the 2n frequency multiplier (1) and the 2n frequency multiplier (2) are connected to be used as the output port of a 2n+1 frequency multiplier, the transmission line (L) is connected between the output port of the 2n+1 frequency multiplier and the power supply, and the length of the transmission line (L) is 1/4 of that of the corresponding wavelength of a signal (2n+1f0). The tera-hertz silica-based quadrupler and the multi-frequency multiplier, provided by invention, have the advantages of high output frequency, pure frequency spectrum, low power consumption and easiness for integration.

Description

technical field [0001] The invention belongs to the technical field of radio frequency / millimeter wave / terahertz integrated circuits, and in particular provides a terahertz silicon-based quadrupler and a multiplier. Background technique [0002] Terahertz radio waves are radio waves with frequencies in the range of 0.1THz to 10THz, and 1THz is equal to 1000GHz. Terahertz technology is not only the expansion of microwave technology to high frequencies, but also the expansion of infrared technology to low frequencies. In the current situation where the development of microwave technology and infrared technology is relatively mature, terahertz technology is in a relatively blank area to be explored. Terahertz technology can be used in imaging, security detection, medical detection, ultra-high-speed communication, biology and military fields, so it has great application and development value. [0003] How to generate a terahertz signal source is the biggest obstacle to the appl...

AI Technical Summary

Problems solved by technology

[0005] At present, the silicon-based frequency multiplier technology involved in the existing literature and patents can only be applied to lower frequencies, and it is difficult to apply to the sub-terahertz / terahertz frequency range, and the frequency multiplier is relatively low. Most are frequency multiplied by 2; therefore, these schemes and techniques are difficult to realize terahertz signal sources in silicon-based integrated circuits

Although the few literatures report sub-terahertz frequency multiplication technology, they also have disadvantages such as low frequency multiplication, small output signal amplitude, and high power consumption, which cannot be really applied to silicon-based terahertz integrated circuit systems.

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