Mixer-Duplexer-Antenna Leaky-Wave System Based on Periodic Space-Time Modulation

By S. Taravati, Christophe Caloz. IEEE Transactions on Antennas and Propagation, 2016

181 citations recorded by the source corpus.

We present a mixer-duplexer-antenna leaky-wave system based on periodic space-time modulation. This system operates as a full transceiver, where the upconversion and downconversion mixing operations are accomplished via space-time transitions; the duplexing operation is induced by the nonreciprocal nature of the structure, and the radiation operation is provided by the leaky-wave nature of the wave. A rigorous electromagnetic solution is derived for the dispersion relation and field distributions. The system is implemented in the form of a spatio-temporally modulated microstrip leaky-wave structure incorporating an array of subwavelengthly spaced varactors modulated by a harmonic wave. In addition to the overall mixer-duplexer-antenna operation, frequency beam scanning at fixed input frequency is demonstrated as one of the interesting features of the system. A prototype is realized and demonstrated by full-wave and experimental results.

Subfields: Aerospace Engineering, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/75cadcc22a31be5549cec9b3f6c7427cef653625

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Citations in the corpus

Spacetime Metamaterials—Part II: Theory and Applications (2020, background): “The first example is that of a spacetime leaky-wave structure that accomplishes the function of a full radio front-end system [99].”
Nonreciprocal Nongyrotropic Magnetless Metasurface (2016, background): “This can be accomplished via the magneto-optical effect [13]–[18], nonlinearity [19]–[21], space-time modulation [22]–[28],”
Serrodyne Frequency Translation Using Time-Modulated Metasurfaces (2019, background): “The proposed metasurfacebased frequency translator may find a range of applications including frequency comb generation [16], [17], arbitrary waveform generation [18], Doppler cloaks [19], modulated antennas [20]–[23], radar pulse shaping [24], [25], and magnetless nonreciprocal devices [26]–[33].”