Contacting lenses for Antenna-coupled bolometers
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چکیده
The transition from NTD-Ge bolometers to TES bolometers was arguably the key innovation in bolometric receivers over the last decade. The greatest advancement of this decade will likely be remembered as integrating lithographed transmission lines between the antennas and bolometers. Several up-coming CMB experiments, including Berkeley’s Polarbear, will use this technology. This chapter begins by contrasting the emerging antenna-coupled devices with more traditional schemes for coupling radiation onto the bolometers. We describe simulations of Polarbear’s crossed doubled-slot antenna performed with both Agilent’s ADS-momentum and Ansoft’s HFSS. These simulations are important for subsequent chapters since the sinuous-antenna design draws it’s inspiration from the crossed-double slot antenna. The meat of this chapter is a description of a raytracing script that accounts for the contacting lens in our simulations. This algorithm is well known and has been used by several researchers in the field, but the literature lacks a detailed explanation that this chapter tries to remedy.
منابع مشابه
Lens-Antenna Coupled Superconducting Hot-Electron Bolometers for Terahertz Heterodyne Detection and Imaging
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تاریخ انتشار 2013