[1] R. Rotman, M. Tur, and L. Yaron, “True Time Delay in Phased Arrays”, Proceedings of the IEEE, vol. 104, no. 3, March 2016.
[2] C. T. Rodenbeck, et al., “Ultra-wideband low-cost phased-array radars,” IEEE Trans. Microw. Theory Tech., vol. 53, no. 12, pp. 3697–3703,Dec. 2005.
[3] M. Bolhasani, S. Imani, and S. A. Ghorashi, “Covariance matrix design to increase SINR in presense of signaldependent interference,” Iranian Journal of Electrical and Computer Engineering (IJECE). vol.16, no.2, pp. 129-134 (In Persian), 2018.
[4] Y. Norouzi and Kashani, E. S. “Radar Performance Estimation Using ELINT Gathered Data,” Passive Defence Sci. and Tech., vol. 3, no. 4, pp. 339-347 (In Persian), 2013.
[5] X. Xue et al, “Microcomb-based true-time-delay network for microwave beamforming”, Journal of lightwave technology, vol. 36, issue 12, p. 2312-2321, June 2018.
[6] I. Visscher et al., “Broadband True Time Delay Microwave Photonic Beamformer for Phased Array Antennas,” 2019 13th European Conference on Antennas and Propagation (EuCAP), Krakow, Poland, 2019, pp. 1-5.
[7] M. A. Piqueras et al., “Optically beamformed beam-switched adaptive antennas for fixed and mobile broad-band wireless access networks,” IEEE Trans. Microwave Theory Tech., vol. 54, no. 2, pp. 887–899, Feb. 2006.
[8] A. Kabiri, Q. He, M. H. Kermani, and O. M. Ramahi, “Design of a controllable delay line,” IEEE Trans. Microw. Theory Tech., vol. 33, no.4, pp. 1080-1087, Nov. 2010.
[9] Y. Liu et al, “93-GHz Signal Beam Steering with True Time Delayed Integrated Optical Beamforming Network”, 2019 optical fiber communications conference and exhibition (OFC), vol. 53, no. 13, March 2019.
[10] M. A. Piqueras et al., “Optically beamformed beam-switched adaptive antennas for fixed and mobile broad-band wireless access networks,” IEEE Trans. Microwave Theory Tech., vol. 54, no. 2, pp. 887–899, Feb. 2006.
[11] R. A. Soref, “Fiber grating prism for true time delay beamsteering,” Fiber Integr. Opt., vol. 15, no. 4, pp. 325–333, Oct. 1996.
[12] H. Zmuda, R. A. Soref, P. Payson, S. Johns, and
E. N. Toughlian, “Photonic beamformer for phased array antennas using a fiber grating prism,” IEEE Photon. Technol. Lett., vol. 9, no. 2, pp. 241–243, Feb. 1997.
[13] J. L. Corral, J. Marti, J. M. Fuster, and R. I. Laming, “Dispersion induced bandwidth limitation of variable true time delay lines based on linearly chirped fibre gratings,” Electron. Lett., vol. 34, no. 2, pp. 209–211, Jan. 1998.
[14] B. Ortega, J. L. Cruz, J. Capmany, M. V. Andrés, and D. Pastor, “Variable delay line for phased-array antenna based on a chirped fiber grating,” IEEE Trans. Microwave Theory Tech., vol. 48, no. 8, pp. 1352–1360, Aug. 2000.
[15] C. Y. Lin, H. Subbaraman, A. Hosseini, A. X. Wang,
L. Zhu, and R. T. Chen, “Silicon nanomembrane based photonic crystal waveguide array for wavelength-tunable true-time-delay lines,” Appl. Phys. Lett., vol. 101, no. 5, Jul. 2012, Art. no. 051101.
[16] M. Y. Chen, H. Subbaraman, and R. T. Chen, “Photonic crystal fiber beamformer for multiple X-band phased-array antenna transmissions,” IEEE Photon. Technol. Lett., vol. 20, no. 5, pp. 375–377, Mar. 2008.
[17] H. Tian, F. Long,W. Liu, and Y. Ji, “Tunable slow light and buffer capability in photonic crystal coupled-cavity waveguides based on electro-optic effect,” Opt. Commun., vol. 285, no. 10–11, pp. 2760–2764, May. 2012.
[18] L. Zhuang et al., “Novel ring resonator-based integrated photonic beamformer for broadband phased array receive antennas—Part II: Experimental prototype,” J. Lightw. Technol., vol. 28, no. 1, pp. 19–31, Jan. 2010.
[19] S. Zheng, H. Chen, and A. W. Poon, “Microring-resonator cross-connect filters in silicon nitride: Rib waveguide dimensions dependence,” IEEE J. Sel. Topics Quantum Electron., vol. 12, no. 6, pt. 2, pp. 1380–1387, Nov./Dec. 2006.
[20] “Low modal birefringent waveguides and methods of fabrication”, U. S. patent application nr. 10/756627-001, vol. 67, no. 8 Jan. 2004.
[21] R. Heideman, A. Melloni, M. Hoekman, A. Borreman, A. Leinse, and F. Morichetti, “Low loss, high conrast optical waveguides based on CMOS Chapter 5 109 compatible LPCVD processing: technology and experimental results”, Proceedings IEEE/LEOS Symposium Benelux Chapter, vol. 98, no. 3 p.71-74, Dec. 2005.
[22] R. Heideman, A. Leinse, and W. Hoving, “Large-scale integrated optics using TriPleXTM waveguide technology: from UV to IR”, SPIE Photonics West, San Jose, California, 24-29 Jan. 2009, pp. 7221-7226.
[23] Se-Young Seo, Jinku Lee, Jung H. Shin， Eun-Seok Kang, and Byeong-Soo Bae, “The thermo-optic effect of Si nanocrystals in silicon-rich silicon oxide thin films”, Applied Physics Letters, vol. 85, no. 13, Sep. 27, 2004, pp. 2526-2528
[24] A. Meijerink et al., “Novel ring resonator-based integrated photonic beamformer for broadband phased array receive antennas—Part I: Design and performance analysis,” J. Lightw. Technol., vol. 28, no. 1, pp. 3–18, Jan. 2010.
[25] G. Lenz, B. J. Eggleton, C. K. Madsen and R. E. Slusher, "Optical delay lines based on optical filters," in IEEE Journal of Quantum Electronics, vol. 37, no. 4, pp. 525-532, April 2001.
)
