Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Monte K. Watanabe"'
Autor:
Yeat Yang, Daniel Kultran, Robert Snyder, Daniel Lam, Eric B. Nakamura, Monte K. Watanabe, Tim R. LaRocca, Khanh Thai, Paul L. Rodgers, Bryan Yi-Cheng Wu, Naveen Daftari, Owen Fordham, Farbod Kamgar, Richard Jai
Publikováno v:
IEEE Journal of Solid-State Circuits. 54:1329-1338
This paper reports the first CMOS RF integrated chipset for secure commercial and military satellite communication enabling next-generation low size, weight, and power (SWaP) terminals. This chipset is a significant departure from current terminals r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ed5f84861e475c720deb6d951a6c5466
https://doi.org/10.1109/jssc.2019.2896977
https://doi.org/10.1109/jssc.2019.2896977
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 57:524-530
The ability of a phase-conjugating array (PCA) to reduce fading in single-reflector, dual-reflector, and blocked-line-of-sight multipath environments is presented. Compared to a reference four-element antenna array, the PCA improves worst case signal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::165e01b55bee966dab490554363d6f8e
https://doi.org/10.1109/tmtt.2008.2012299
https://doi.org/10.1109/tmtt.2008.2012299
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 55:2856-2864
A 2-D retrodirective array based on phase detection and heterodyne scanning is presented. The system integrates two single voltage-controlled oscillator phase-shifting networks that are autonomously controlled via a phase-detecting array and control
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f7b0798364619f40391aa12c703159db
https://doi.org/10.1109/tmtt.2007.909883
https://doi.org/10.1109/tmtt.2007.909883
Autor:
Joseph C. Longhi, Justin M. Akagi, Alexis Zamora, Monte K. Watanabe, Toy Lim, Wayne A. Shiroma, Wade G. Tonaki, Bao Jun Lei, Tyler F. Chun, Reece T. Iwami
Publikováno v:
2010 IEEE International Conference on Wireless Information Technology and Systems.
This paper described the miniaturization challenges in implementing an RDA architecture for a heavily resource-constrained CubeSat platform; by demonstrating this, a transition towards implementation on other highly mobile platforms can be accelerate
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70de1f4b7e122fe948da4fbf7b863ffb
https://doi.org/10.1109/icwits.2010.5611925
https://doi.org/10.1109/icwits.2010.5611925
Autor:
Justin M. Akagi, Alexis Zamora, Reece T. Iwami, Tyler F. Chun, Monte K. Watanabe, Wayne A. Shiroma
Publikováno v:
2010 IEEE International Conference on Wireless Information Technology and Systems.
It has been shown that PCAs suffer from performance variability due to changes in the phase difference and incident angle of interrogating sources. This performance instability can be mitigated by increasing the number of elements in the array.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f6d2748f30f18ebeaf50c575d848ab46
https://doi.org/10.1109/icwits.2010.5611879
https://doi.org/10.1109/icwits.2010.5611879
Publikováno v:
2010 IEEE MTT-S International Microwave Symposium.
A full-duplex self-steering array using power detection and phase shifting is presented. The system utilizes two sub-arrays to autonomously steer its beam toward an interrogating signal. A two-element null-scanning array is used for power detection w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::33ef1a7e0b8996921b503c08df4253c8
https://doi.org/10.1109/mwsym.2010.5515256
https://doi.org/10.1109/mwsym.2010.5515256
Publikováno v:
2009 IEEE MTT-S International Microwave Symposium Digest.
The performance of a phase-conjugating array (PCA) in a multiple-interrogator environment is investigated. The PCA demonstrates the ability to properly retrodirect signals toward multiple interrogators to varying degrees, dependent on phase, angle of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcab3e355f18f5ade9b6a4247e48c723
https://doi.org/10.1109/mwsym.2009.5165916
https://doi.org/10.1109/mwsym.2009.5165916
Publikováno v:
2009 IEEE MTT-S International Microwave Symposium Digest.
A retrodirective array designed to respond to nonuniform wavefronts is presented. The design overcomes the limitations of existing phase-detection-based retrodirective array architectures by measuring the phase difference between adjacent element pai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e38fbef9d06b6236a359e04e99bc8e38
https://doi.org/10.1109/mwsym.2009.5165822
https://doi.org/10.1109/mwsym.2009.5165822
Publikováno v:
2008 IEEE MTT-S International Microwave Symposium Digest.
A half-duplex self-steering array using power detection and phase shifting is presented. The system combines a phase-shifting array and an RF power-tracking control circuit to autonomously steer its beam toward the peak-power direction. Retrodirectiv
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c94934499311f126f52714ad5cb1c736
https://doi.org/10.1109/mwsym.2008.4633307
https://doi.org/10.1109/mwsym.2008.4633307
Publikováno v:
2008 IEEE MTT-S International Microwave Symposium Digest.
A self-phasing receive array based on the phase-detection and phase-shifting architecture is demonstrated in the S-band. The array is capable of selectively steering toward a specific observation frequency in an RF environment composed of multiple si
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6322264cb8465950940ac73feb203e65
https://doi.org/10.1109/mwsym.2008.4632956
https://doi.org/10.1109/mwsym.2008.4632956