[1] P H Siegel. Terahertz technology. IEEE Transactions on Microwave Theory and Techniques, 50, 910-928(2002).

[2] Y J He, Y L Chen, L Zhang et al. An overview of Terahertz antennas. China Communications, 17, 124-165(2020).

[3] J Hu, W T Lyu, H T Zhu et al. Design, uncertainty analysis, and measurement of a silicon-based platelet THz corrugated horn. IEEE Transactions on Antennas and Propagation, 70, 5897-5901(2022).

[4] G B Wu, Y S Zeng, K F Chan et al. 3-D printed 3-D near-field focus-scanning lens for Terahertz applications. IEEE Transactions on Antennas and Propagation, 70, 10007-10016(2022).

[5] M Miguel Camacho, R R Boix, S A Kuznetsov et al. Far-Field and near-field physics of extraordinary THz transmitting hole-array antennas. IEEE Transactions on Antennas and Propagation, 67, 6029-6038(2019).

[6] S W Qu, L Xiao, H Yi et al. Frequency-controlled 2-D focus-scanning Terahertz reflectarrays. IEEE Transactions on Antennas and Propagation, 67, 1573-1581(2019).

[7] A Abohmra, H hassan Abbas, M Al-hasan et al. Terahertz antenna array based on a hybrid perovskite structure. IEEE Open Journal of Antennas and Propagation, 1, 464-471(2020).

[8] M Alibakhshikenari, B S Virdee, M Khalily et al. High-gain on-chip antenna design on silicon layer with aperture excitation for Terahertz applications. IEEE Antennas and Wireless Propagation Letters, 19, 1576-1580(2020).

[9] J Grzyb, M Andree, R Jain et al. A lens-coupled on-chip antenna for dual-polarization SiGe HBT THz direct detector. IEEE Antennas and Wireless Propagation Letters, 18, 2404-2408(2019).

[10] G B Wu, Y S Zeng, K F Chan et al. 3-D printed 3-D near-field focus-scanning lens for Terahertz applications. IEEE Transactions on Antennas and Propagation, 70, 10007-10016(2022).

[11] X Y He, Y Yang, L Deng et al. 3D printed sub-Terahertz all-dielectric lens for arbitrary manipulation of quasi-nondiffractive orbital angular momentum waves. ACS Applied Materials & Interfaces, 13, 20770-20778(2021).

[12] A Abbaszadeh, M Ahmadi-Boroujeni, A Tehranian. Generating uniform irradiance in the Fresnel region by quasi-optical beam shaping of a millimeter-wave source. Optics Express, 27, 32135-32146(2019).

[13] X Yi, C Wang, X B Chen et al. A 220-to-320-GHz FMCW radar in 65-nm CMOS using a frequency-comb architecture. IEEE Journal of Solid-State Circuits, 56, 327-339(2021).

[14] G B Wu, K F Chan, K M Shum et al. Millimeter-wave and Terahertz OAM discrete-lens antennas for 5G and beyond. IEEE Communications Magazine, 60, 34-39(2022).

[15] G B Wu, Y S Zeng, K F Chan et al. 3-D printed circularly polarized modified fresnel lens operating at Terahertz frequencies. IEEE Transactions on Antennas and Propagation, 67, 4429-4437(2019).

[16] P Lu, T Haddad, J Tebart et al. Mobile THz communications using photonic assisted beam steering leaky-wave antennas. Optics Express, 29, 21629-21638(2021).

[17] D S Liao, M T Wang, K F Chan et al. A deep-learning enabled discrete dielectric lens antenna for Terahertz reconfigurable holographic imaging. IEEE Antennas and Wireless Propagation Letters, 21, 823-827(2022).

[18] M Bauer, A Rämer, S A Chevtchenko et al. A high-sensitivity AlGaN/GaN HEMT Terahertz detector with integrated broadband bow-tie antenna. IEEE Transactions on Terahertz Science and Technology, 11, 430-444(2019).

[19] G B Wu, K F Chan, C H Chan. 3-D printed Terahertz lens to generate higher order Bessel beams carrying OAM. IEEE Transactions on Antennas and Propagation, 69, 3399-3408(2021).

[20] G B Wu, K F Chan, S W Qu et al. Orbital angular momentum (OAM) mode-reconfigurable discrete dielectric lens operating at 300 GHz. IEEE Transactions on Terahertz Science and Technology, 10, 480-489(2020).

[21] G B Wu, K F Chan, S W Qu et al. A 2-D beam-scanning Bessel launcher for Terahertz applications. IEEE Transactions on Antennas and Propagation, 68, 5893-5903(2020).

[22] Y Amarasinghe, R Mendis, R Shrestha et al. Broadband wide‑angle terahertz antenna based on the application of transformation optics to a Luneburg lens. Scientific Reports, 11, 5230(2021).

[23] Y E Gan, B Mirzaei, S V D Poel et al. 3.9 THz spatial filter based on a back-to-back Si-lens system. Optics Express, 28, 32693-32708(2020).

[24] G B Wu, Y S Zeng, K F Chan et al. High-gain circularly polarized lens antenna for Terahertz applications. IEEE Antennas and Wireless Propagation Letters, 18, 921-925(2019).

[25] J F Zhu, Y Yang Yang, D McGloin et al. Sub-Terahertz 3-D printed all-dielectric low-cost low-profile lens-integrated polarization beam splitter. IEEE Transactions on Terahertz Science and Technology, 11, 433-442(2021).

[26] M Kokkonen, A Ghavidel, N Tervo et al. An ultralight high-directivity ceramic composite lens antenna for 220-330 GHz. IEEE Access, 9, 156592-156598(2021).

[27] G Guimarães, P Reynaert. A 670-GHz 4 × 2 oscillator–radiator array achieving 7.4-dBm EIRP in 40-nm CMOS. IEEE Journal of Solid-State Circuits, 56, 3399-3411(2021).

[28] A Garufo, P M Sberna, G Carluccio et al. A connected array of coherent photoconductive pulsed sources to generate mW average power in the submillimeter wavelength band. IEEE Transactions on Terahertz Science and Technology, 9, 221-236(2019).

[29] D S Ponomarev, D V Lavrukhin, N V Zenchenko et al. Boosting photoconductive large-area THz emitter via optical light confinement behind a highly refractive sapphire-fiber lens. Optics Letters, 47, 1899-1902(2022).

[30] X B Chen, X Yi, M I W Khan et al. A 140-GHz FMCW TX/RX-antenna-sharing transceiver with low-inherent-loss duplexing and adaptive self-interference cancellation. IEEE Journal of Solid-State Circuits, 57, 3631-3645(2022).

[31] L Gao, C H Chan. A 0.45-THz 2-D scalable radiator array with 28.2-dBm EIRP using an elliptical Teflon lens. IEEE Journal of Solid-State Circuits, 57, 400-412(2022).

[32] R Zatta, R Jain, J Grzyb et al. Resolution limits of hyper-hemispherical silicon lens-integrated THz cameras employing geometrical multiframe super-resolution imaging. IEEE Transactions on Terahertz Science and Technology, 11, 277-286(2021).

[33] L Gao, C H Chan. A 0.47-THz ring scalable coupled oscillator–radiator array with miniature patch antennas. IEEE Transactions on Microwave Theory and Techniques, 70, 3964-3974(2022).

[34] H X Li, X Gao, X Y Bu et al. The Design Methods and Experiments for a 220-GHz quasi-optical cryogenic Schottky subharmonic mixer of high performance. IEEE Transactions on Microwave Theory and Techniques(2023).

[35] N Chudpooti, N Duangrit, P Akkaraekthalin et al. 220-320 GHz hemispherical lens antennas using digital light processed photopolymers. IEEE Access, 7, 12283-12290(2019).

[36] A C Bunea, D Neculoiu, A Stavrinidis et al. Monolithic integrated Schottky diode multiplier and rectenna for wireless communication link in the W band. IEEE Access, 10, 107386-107394(2022).

[37] H Jalili, O Momeni. A 0.46-THz 25-element scalable and wideband radiator array with optimized lens integration in 65-nm CMOS. IEEE Journal of Solid-State Circuits, 55, 2387-2400(2020).

[38] L Gao, C H Chan. A 0.68–0.72-THz 2-D scalable radiator array with -3-dBm radiated power and 27.3-dBm EIRP in 65-nm CMOS. IEEE Journal of Solid-State Circuits, 57, 3114-3124(2022).

[39] J Grzyb, P Rodríguez-Vázquez, S Malz et al. A SiGe HBT 215–240 GHz DCA IQ TX/RX chipset with built-in test of USB/LSB RF asymmetry for 100+ Gb/s data rates. IEEE Transactions on Microwave Theory and Techniques, 70, 1696-1714(2022).

[40] S V Berkel, E S Malotaux, C D Martino et al. Wideband double leaky slot lens antennas in CMOS technology at submillimeter wavelengths. IEEE Transactions on Terahertz Science and Technology, 10, 540-553(2020).

[41] F Joint, G Gay, P B Vigneron et al. Compact and sensitive heterodyne receiver at 2.7 THz exploiting a quasi-optical HEB-QCL coupling scheme. Applied Physics Letters, 115, 231104(2019).

[42] S V Berkel, E S Malotaux, C D Martino et al. Wideband modeling of CMOS Schottky barrier diode detectors for THz radiometry. IEEE Transactions on Terahertz Science and Technology, 11, 495-507(2021).

[43] T Wang, J W He, J Y Guo et al. Thermally switchable terahertz wavefront metasurface modulators based on the insulator-to-metal transition of vanadium dioxide. Optics Express, 27, 20347-20357(2019).

[44] G M Katyba, N I Raginov, E M Khabushev et al. Tunable THz flat zone plate based on stretchable single-walled carbon nanotube thin film. Optica, 10, 53-61(2023).

[45] J W Li, Y L Wang, S J Liu et al. Largest aperture metalens of high numerical aperture and polarization independence for long-wavelength infrared imaging. Optics Express, 30, 28882-28891(2022).

[46] D Sang, M F Xu, M B Pu et al. Toward high-efficiency ultrahigh numerical aperture freeform metalens: from vector diffraction theory to topology optimization. Laser & Photonics Reviews, 16, 2200265(2022).

[47] S Al‑Daffaie, A J Jumaah, V L Rubio et al. Design and implementation of a terahertz lens‑antenna for a photonic integrated circuits based THz systems. Scientific Reports, 12, 1476(2022).

[48] R Zatta, V S Jagtap, J Grzyb et al. Broadband lens-integrated CMOS camera-type THz compact antenna test range. IEEE Transactions on Terahertz Science and Technology, 11, 527-537(2021).

[49] N Ullah, W G Liu, G C Wang et al. Gate-controlled terahertz focusing based on graphene-loaded metasurface. Optics Express, 28, 2789-2798(2020).

[50] M Ferreras, D Cibiraite-Lukenskiene, A Lisauskas et al. Broadband sensing around 1 THz via a novel biquad-antenna-coupled low-NEP detector in CMOS. IEEE Transactions on Terahertz Science and Technology, 11, 16-27(2021).

[51] J Y Guo, T Wang, H Zhao et al. Reconfigurable Terahertz metasurface pure phase holograms. Advanced Optical Materials, 7, 1801696(2019).

[52] N V Kinev, K I Rudakov, V FilippenkoL et al. Terahertz source radiating to open space based on the superconducting flux-flow oscillator: development and characterization. IEEE Transactions on Terahertz Science and Technology, 9, 557-564(2019).

[53] Y Gan, B Mirzaei, J R G D Silva et al. Low noise MgB2 hot electron bolometer mixer operated at 5.3 THz and at 20K. Applied Physics Letters, 119, 202601(2021).

[54] J J A Baselmans, F Facchin, A P Laguna et al. Ultra-sensitive THz microwave kinetic inductance detectors for future space telescopes. Astronomy & Astrophysics, 665, A17(2022).

[55] Y Suzuki, T V Mai, X B Yu et al. Phase control of Terahertz waves using injection-locked resonant tunneling diode oscillator. IEEE Transactions on Terahertz Science and Technology, 12, 481-488(2022).

[56] A Glück, N Rothbart, K Schmalz et al. SiGe BiCMOS heterodyne receiver frontend for remote sensing with small satellites. IEEE Transactions on Terahertz Science and Technology, 12, 603-610(2022).

[57] S Freer, A Gorodetsky, M Navarro-Cia. Beam profiling of a commercial lens-assisted Terahertz time domain spectrometer. IEEE Transactions on Terahertz Science and Technology, 11, 90-100(2021).

[58] N Chudpooti, N Duangrit, P Akkaraekthalin et al. Electronics-based free-space Terahertz measurement using hemispherical lens antennas. IEEE Access, 7, 95536-95546(2019).

[59] J R G Silva, M Finkel, W M Laauwen et al. High accuracy pointing for quasi-optical THz mixer arrays. IEEE Transactions on Terahertz Science and Technology, 12, 53-62(2022).

[60] H Yuan, D Voß, A Lisauskas et al. 3D Fourier imaging based on 2D heterodyne detection at THz frequencies. APL Photonics, 4, 106108(2019).