Reflectarray design for 120-GHz radar application: measurement results

Autor: Arttu Luukanen, Jussi Säily, P. Rantakari, Sampo Makela, Juha Ala-Laurinaho, Paivi Koivisto, Janne Häkli, Antti V. Räisänen, Aleksi Tamminen

Publikováno v: Tamminen, A, Mäkelä, S, Ala-Laurinaho, J, Häkli, J, Koivisto, P, Rantakari, P, Säily, J, Luukanen, A & Räisänen, A V 2013, ' Reflectarray Design for 120-GHz Radar Application : Measurement Results ', IEEE Transactions on Antennas and Propagation, vol. 61, no. 10, pp. 5036-5047 . https://doi.org/10.1109/TAP.2013.2273256

In this paper, we present design and experimental results on reflectarrays at 120 GHz. The offset-fed reflectarrays consist of conductor-backed coplanar patch antennas with phase-shifting stubs. Three 138-mm reflectarrays are lithographically fabrica

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4d45e6d00f39f6fda31180256cf4e312
https://doi.org/10.1109/TAP.2013.2273256

Testing of a 1.5-m reflector antenna at 322 GHz in a CATR based on a hologram

Autor: Janne Häkli, Anne Lönnqvist, Jussi Säily, Ville Viikari, Juha Mallat, Juha Ala-Laurinaho, Jussi Tuovinen, Antti V. Räisänen, Tomi Koskinen

Publikováno v: Häkli, J, Koskinen, T, Lönnqvist, A, Säily, J, Mallat, J, Ala-Laurinaho, J, Viikari, V, Räisänen, A V & Tuovinen, J 2005, ' Testing of a 1.5-m reflector antenna at 322 GHz in a CATR based on a hologram ', IEEE Transactions on Antennas and Propagation, vol. 53, no. 10, pp. 3142-3150 . https://doi.org/10.1109/TAP.2005.856343

Hologram-based compact antenna test range (CATR) is a potential method for testing large antennas at submillimeter wavelengths. This paper describes testing of a 1.5-m single offset parabolic reflector antenna with a 3-m-diameter hologram-based CATR.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94f1d2af5b449d4b50f7969ab3e65f5e
https://doi.org/10.1109/tap.2005.856343

Challenges and Possibilities of RFID in the Forest Industry

Autor: Kaarle Jaakkola, Ville Puntanen, Janne Häkli, KajNummila, Antti Sirkka

Publikováno v: Radio Frequency Identification from System to Applications

Considerable added value in wood and timber production can be achieved via higher yield and quality of the wood products deriving from improved control of the production proc‐ esses. The key to improve the production is the identification of the in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b71521bdf70638e581fa4fe109762276
https://doi.org/10.5772/54205

Reflectarray for 120-GHz beam steering application: design, simulations, and measurements

Autor: Aleksi Tamminen, Mikko Varonen, Arttu Luukanen, Jussi Säily, Antti V. Räisänen, Kari Halonen, Mikko Kärkkäinen, Reijo Tuovinen, Sampo Makela, Markku Sipilä, P. Rantakari, Paivi Koivisto, Pekka Pursula, Janne Häkli, David Gomes-Martins, Juha Ala-Laurinaho

Publikováno v: Tamminen, A, Ala-Laurinaho, J, Gomes Martins, D, Häkli, J, Koivisto, P, Kärkkäinen, M, Mäkelä, S, Pursula, P, Rantakari, P, Sipilä, M, Säily, J, Tuovinen, R, Luukanen, A & Räisänen, A V 2012, Reflectarray for 120-GHz beam steering application : Design, simulations, and measurements . in D A Wikner (ed.), Proceedings of SPIE 8362 : Passive and Active Millimeter-Wave Imaging XV ., 836205, International Society for Optics and Photonics SPIE, Proceedings of SPIE, vol. 8362, Passive and Active Millimeter-Wave Imaging XV, Baltimore, Maryland, United States, 26/04/12 . https://doi.org/10.1117/12.924167

Development of a 120-GHz FMCW radar with a reflectarray as focusing element is described. The reflectarray is realized on a 150-mm silicon wafer and it has 3700 phase-modulating elements on it. The phase shifters have four discrete values to cover fu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::44f3b3b7af118c57e0ee753f0ddefc90
https://doi.org/10.1117/12.924167

How to test a high-gain antenna at THz frequencies?

Autor: Aleksi Tamminen, Aki Karttunen, Juha Mallat, Tomi Koskinen, Anne Lönnqvist, Matti Vaaja, Eero Noponen, Antti V. Räisänen, Ville Viikari, Juha Ala-Laurinaho, Janne Häkli

Publikováno v: Räisänen, A V, Ala-Laurinaho, J, Häkli, J, Karttunen, A, Koskinen, T, Lönnqvist, A, Mallat, J, Noponen, E, Tamminen, A, Vaaja, M & Viikari, V 2007, How to test a high-gain antenna at THz frequencies? in 2007 19th International Conference on Applied Electromagnetics and Communications ., 4544435, IEEE Institute of Electrical and Electronic Engineers, ICECom 2007, 19th International Conference on Applied Electromagnetics and Communications, Dubrovnik, Croatia, 24/09/07 . https://doi.org/10.1109/ICECOM.2007.4544435
Aalto University
ResearcherID

A brief review of antenna test methods at THz frequencies is presented. Two hologram-based compact antenna test ranges (CATR), one at 322 GHz and another at 650 GHz were designed, constructed, and used for testing the ADMIRALS RTO antenna of 1.5 m in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e9743dd53e7c711fe8ce641e556b6d3
https://cris.vtt.fi/en/publications/47248865-0776-4fbe-8407-5cb7eaced75d