Journal ArticleDOI
Testing of a 1.5-m reflector antenna at 322 GHz in a CATR based on a hologram
Janne Häkli,Tomi Koskinen,Anne Lönnqvist,Jussi Säily,Ville Viikari,Juha Mallat,Juha Ala-Laurinaho,Jussi Tuovinen,Antti V. Räisänen +8 more
Reads0
Chats0
TLDR
In this paper, a 1.5m single offset parabolic reflector antenna with a 3m-diameter hologram-based compact antenna test range (CATR) is used for testing large antennas at submillimeter wavelengths.Abstract:
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. This is the first time such a measurement is carried out at submillimeter wavelengths. The antenna tests were done in a CATR that was specifically designed and constructed for these tests. The measured radiation pattern at the frequency of 322 GHz is presented. The measured pattern corresponds reasonably well to the simulated pattern of the antenna. The effect of the quiet-zone field nonidealities on the measurement results and the reasons for the discrepancies in the measured antenna beam are discussed.read more
Citations
More filters
Journal ArticleDOI
A Single-Layer Ultrawideband Microstrip Antenna
Qi Wu,Ronghong Jin,Junping Geng +2 more
TL;DR: In this paper, a single-layer microstrip antenna for ultrawideband (UWB) applications, in which an array of rectangular microstrip patches was arranged in the log-periodic way and proximity-coupled to the microstrip feeding line, is presented.
Journal ArticleDOI
Hologram-based compact range for submillimeter-wave antenna testing
Anne Lönnqvist,Tomi Koskinen,Janne Häkli,Jussi Säily,Juha Ala-Laurinaho,Juha Mallat,Ville Viikari,Jussi Tuovinen,Antti V. Räisänen +8 more
TL;DR: In this article, a hologram-based compact antenna test range (CATR) is developed to overcome challenges met in antenna testing at submillimeter wavelengths, which is based on a 3-m computer-generated hologram as the focusing element.
Journal ArticleDOI
Antenna Tests With a Hologram-Based CATR at 650 GHz
Aki Karttunen,Juha Ala-Laurinaho,Matti Vaaja,Tomi Koskinen,Janne Hakli,Anne Lönnqvist,Juha Mallat,Aleksi Tamminen,Ville Viikari,Antti V. Räisänen +9 more
TL;DR: In this article, a hologram-based compact antenna test range (CATR) is designed, constructed, and used to test a 1.5-m antenna at 650 GHz.
Journal ArticleDOI
Phase-hologram-based compact RCS test range at 310 GHz for scale models
TL;DR: In this paper, a phase hologram is used to convert the feed-horn radiation to a plane wave needed for radar cross section (RCS) determination, which is performed at 310 GHz using continuous-wave operation.
Journal ArticleDOI
Antenna Pattern Correction Technique Based on an Adaptive Array Algorithm
TL;DR: In this article, an adaptive array correction technique is presented that is based on adaptive array algorithm, where the antenna pattern of the antenna under test (AUT) is measured several times at different positions in the quiet zone.
References
More filters
Journal ArticleDOI
A compact antenna test range based on a hologram
TL;DR: In this article, a planar hologram structure is used as a collimating element for the reflector-type compact antenna test range (CATR) at 119 GHz.
Journal ArticleDOI
Reflectivity level of radio anechoic chambers
TL;DR: In this article, a comparison between the antenna pattern comparison technique and the free-space voltage standing-wave ratio technique for evaluating the reflectivity level of radio anechoic chambers is presented.
Journal ArticleDOI
Measurement of the Odin telescope at 119 GHz with a hologram-type CATR
Juha Ala-Laurinaho,T. Hirvonen,P. Piironen,Arto Lehto,Jussi Tuovinen,Antti V. Räisänen,Urban Frisk +6 more
TL;DR: In this article, a 119 GHz compact antenna test range (CATR) based on a 2.4 m/spl times/2.0 m hologram and its application on the Odin telescope tests are described.
Journal ArticleDOI
Range distance requirements for measuring low and ultralow sidelobe antenna patterns
P. Hacker,H. Schrank +1 more
TL;DR: In this paper, the effects of quadratic phase errors due to finite length pattern ranges on the measurement of low and ultralow sidelobe antennas are considered, and the relationship between sidelobe errors and range distances is derived from calculated patterns for a number of one-dimensional amplitude distributions with various quadratically phase errors, in terms of the change (error) in the highest sidelobe versus the range distances in multiples of D^{2}/\lambda.