Collection efficiency for millimeter and submillimeter wave antenna-coupled detection

Yuancheng Xu; Brian A. Lail

doi:10.1117/12.2177412

22 May 2015 Collection efficiency for millimeter and submillimeter wave antenna-coupled detection

Yuancheng Xu, Brian A. Lail

Proceedings Volume 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII; 94672C (2015) https://doi.org/10.1117/12.2177412
Event: SPIE Defense + Security, 2015, Baltimore, MD, United States

Abstract

The goal in the design of an efficient and low-noise antenna coupled receiver is to achieve a maximal capture cross section for the incident electromagnetic radiation compared to the dimensions of the sub-wavelength sized sensor loading the antenna. Collection efficiency captures this concept of power output/input and is made up of several subefficiencies. In the ideal case all of the available, incident power is collected and transferred to the load. However, many of the fundamental limits of antennas are based on theory describing the transmitting mode, whereas certain questions remain open for receiving antennas. Textbook antenna theory predicts that only 50% of available incident power can be absorbed by an antenna, yet under specific conditions this limitation can be surpassed. Two considerations are presented; (1) fundamental limits on antenna absorption, and (2) practical participation of dissipative media in achieving impedance matching between antenna and load, and the associated performance compromise. Specifically we seek to determine whether antenna-coupled detectors can approach unity absorption efficiency under matched conditions. Further, we identify practical conditions that must be met in order to overcome fundamental limitations that inhibit total absorption. Then antenna loss is split into radiative and dissipative terms in order to identify trade-offs between impedance matching and radiation efficiency.

Citation Download Citation

Yuancheng Xu and Brian A. Lail "Collection efficiency for millimeter and submillimeter wave antenna-coupled detection", Proc. SPIE 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII, 94672C (22 May 2015); https://doi.org/10.1117/12.2177412

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Antennas

Absorption

Resistance

Scattering

Circuit switching

Nickel

Terahertz radiation

Show All Keywords

Keywords/Phrases

Search In:

Publication Years