A Ka-band InP MMIC 180° phase switch

D. Kettle; N. Roddis; R. Sloan

doi:10.1109/LMWC.2005.850562

A Ka-band InP MMIC 180° phase switch

D. Kettle, N. Roddis, R. Sloan

Research output: Contribution to journal › Article › peer-review

Abstract

A new type of Ka band (26 to 36 GHz) 180 degree phase switch (bi-phase modulator) monolithic microwave integrated circuit has been developed for the EC funded FARADAY radio astronomy project. This integral component forms part of a chip set for a very low noise switching radiometer operating at a temperature of approximately 15 K. To maximize the sensitivity of the radiometer lattice-matched indium phosphide HEMT technology has been used: all of the active components of the radiometer, with the exception of the detectors, have been manufactured on a single wafer process. Design principles are described, together with a comparison of modeled and measured results. The results show an average insertion loss of 3.5 dB, return loss of better than 10 dB and an average phase difference close to 170° ± 10° the 26-36 GHz band. © 2005 IEEE.

Original language	English
Pages (from-to)	425-427
Number of pages	2
Journal	IEEE Microwave and Wireless Components Letters
Volume	15
Issue number	6
DOIs	https://doi.org/10.1109/LMWC.2005.850562
Publication status	Published - Jun 2005

Keywords

Cosmic microwave background (CMB)
HEMT
Monolithic microwave integrated circuit (MMIC)

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10.1109/LMWC.2005.850562

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title = "A Ka-band InP MMIC 180° phase switch",

abstract = "A new type of Ka band (26 to 36 GHz) 180 degree phase switch (bi-phase modulator) monolithic microwave integrated circuit has been developed for the EC funded FARADAY radio astronomy project. This integral component forms part of a chip set for a very low noise switching radiometer operating at a temperature of approximately 15 K. To maximize the sensitivity of the radiometer lattice-matched indium phosphide HEMT technology has been used: all of the active components of the radiometer, with the exception of the detectors, have been manufactured on a single wafer process. Design principles are described, together with a comparison of modeled and measured results. The results show an average insertion loss of 3.5 dB, return loss of better than 10 dB and an average phase difference close to 170° ± 10° the 26-36 GHz band. {\textcopyright} 2005 IEEE.",

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author = "D. Kettle and N. Roddis and R. Sloan",

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AU - Roddis, N.

AU - Sloan, R.

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AB - A new type of Ka band (26 to 36 GHz) 180 degree phase switch (bi-phase modulator) monolithic microwave integrated circuit has been developed for the EC funded FARADAY radio astronomy project. This integral component forms part of a chip set for a very low noise switching radiometer operating at a temperature of approximately 15 K. To maximize the sensitivity of the radiometer lattice-matched indium phosphide HEMT technology has been used: all of the active components of the radiometer, with the exception of the detectors, have been manufactured on a single wafer process. Design principles are described, together with a comparison of modeled and measured results. The results show an average insertion loss of 3.5 dB, return loss of better than 10 dB and an average phase difference close to 170° ± 10° the 26-36 GHz band. © 2005 IEEE.

KW - Cosmic microwave background (CMB)

KW - HEMT

KW - Monolithic microwave integrated circuit (MMIC)

U2 - 10.1109/LMWC.2005.850562

DO - 10.1109/LMWC.2005.850562

M3 - Article

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EP - 427

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

IS - 6

ER -

A Ka-band InP MMIC 180° phase switch

Abstract

Keywords

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