Development, simulation and construction of cost-effective GTEM cells

Abstract

Abstract-Gigahertz transverse electromagnetic (GTEM) cells are used extensively in industry for testing the impact of defined E-fields on devices sensitive to electromagnetic interference. Compared to anechoic chambers, GTEM cells are small, inexpensive and require less powerful amplifiers to achieve the same field strength. This paper presents the design, simulation and qualification of a compact GTEM cell capable of generating field strengths in excess of 600 V/m over a 20 × 20 × 15 cm test cavity, whilst being less than 2.2 × 1.3 × 1 m in total size. Specific hybrid FEM-MLFMM simulation strategies are provided to examine high power device characteristics prior to manufacturing, including accurate modelling of absorber materials. Practical notes on manufacturing and qualification are also presented.

Simulasi dan Perancangan Septum pada Gigahertz Transverse Electromagnetic (GTEM) Cell dalam Pengujian Radiated Emision

“…Pengendalian standarisasi dibahas pada Electromagnetic Compatible (EMC), salah satu pengujian di area terbuka Open Area Test Site (OATS) yang tertutupi panel logam RF serta peredam gelombang mikro pada antenanya berfungsi untuk mengukur tingkat interferensi radio frekuensi yang terpancar. Dengan menggunakan GTEM cell memungkian untuk melakakukan uji ketahanan dan radiasi suatu perangkat elektronik terhadap EMI dari suatu DUT (Stander & Sinha, 2013). Gigahertz Transverse Electromagnetic Chamber (GTEM) cell dapat beroperasi pada frekuensi tinggi dibandingkan TEM cell yang hanya dapat beroperasi hingga 200 MHz.…”

Comment on “An Overview of Probe-Based Millimeter-Wave/Terahertz Far-Field Antenna Measurement Setups” [Letter to the Editor]

“…Comment on "An Overview of Probe-Based Millimeter-Wave/Terahertz Far-Field Antenna Measurement Setups" Tinus Stander I wish to thank Zheng et al for their thorough overview of the probebased millimeter-wave (mm-wave) a ntenna measurements recent ly published as a "Measurements Corner" column in IEEE Antennas and Propagation Magazine [1]. I should, however, point out that our work on gigahertz transverse electromagnetic cells [2] was incorrectly attributed as the source of the mm-wave anechoic measurement chamber pictured in Figure 7. The details of this chamber were, in fact, presented in [3].…”