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A 874 GHz Mixer Block Integrated Spline Horn and Lens Antenna for the ISMAR Instrument

Yogesh B. Karandikar ; Arvid Hammar (Institutionen för mikroteknologi och nanovetenskap, Terahertz- och millimetervågsteknik ) ; Peter Sobis (GigaHertz Centrum) ; Per Forsberg ; Anders Emrich ; Jan Stake (Institutionen för mikroteknologi och nanovetenskap, Terahertz- och millimetervågsteknik ; GigaHertz Centrum)
9th European Conference on Antennas and Propagation, EuCAP 2015, Lisbon, Portugal, 13-17 May 2015 (2015)
[Konferensbidrag, refereegranskat]

In this paper, we present the design of a 874 GHz mixer block-integrated antenna for the ISMAR Instrument. The spline horn antenna with a dielectric lens (Teflon) is used to fulfill the requirement of an on-axis Directivity exceeding 32 dBi. The well designed spline horn offers very high Gaussian Coupling, exceeding 97%. This property of spline horn further helps to achieve very rotationally symmetric beam even after the lens with very low cross-polarization (< -30 dB) as well as low side-lobe levels (< -28 dB). The integrated spline horn with lens has far-field Full Width at Half Maximum of 4.2±0.2° over the frequency range of 860 GHz to 890 GHz. The simulated antenna losses are less than 0.5 dB and the antenna input reflection coefficient including the circular to rectangular waveguide (WR1.2) transition is better than -20 dB.

Nyckelord: Gaussian Coupling, Spline Horns, Lens, ISMAR, mixer

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Denna post skapades 2015-04-17. Senast ändrad 2016-09-22.
CPL Pubid: 215294