Balanced low-loss Ka-band μ-coaxial hybrids

Kenneth Vanhille, Dejan Filipović, Christopher Nichols, Daniel Fontaine, Wendy Wilkins, Erik Daniel, Zoya Popović

Research output: Chapter in Book/Report/Conference proceedingConference contribution

19 Citations (Scopus)

Abstract

Miniature hybrid couplers are designed in an air-filled microfabricated rectangular coaxial line technology for operation near 36 GHz. The size of the couplers is less than 2.7 mm by 2.7 mm in area and 420 μm in height Air-filled copper μ-coaxial cable provides less than 0.3dB/cm loss at Ka-band. Coaxial-to-CPW probe transitions on the ports provide means to perform 4-port VNA measurements with an external SOLT calibration. After implementing a de-embedding procedure, measurements show return loss and isolation better than 20 dB, with output amplitudes of 3.2 dB ±0.1 dB, and output phase differences of 90° ±2.0° from 34.5 to 36.5 GHz. The return loss and isolation minima are shifted in frequency as compared to the optimal output amplitude and phase frequency. This frequency difference is 1.5 GHz near 36 GHz with this technology, however branch line couplers using branch-length and reactive tee-junction compensation methods are presented. The improvement is experimentally verified; the frequency differences are 0.5 and 0.2 GHz for the two compensated designs.

Original languageEnglish (US)
Title of host publicationIEEE MTT-S International Microwave Symposium Digest
Pages1157-1160
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE MTT-S International Microwave Symposium, IMS 2007 - Honolulu, HI, United States
Duration: Jun 3 2007Jun 8 2007

Other

Other2007 IEEE MTT-S International Microwave Symposium, IMS 2007
CountryUnited States
CityHonolulu, HI
Period6/3/076/8/07

Fingerprint

couplers
output
isolation
Coaxial cables
Air
T shape
coaxial cables
air
Calibration
embedding
Copper
copper
probes
Compensation and Redress

Keywords

  • Coaxial couplers
  • Millimeter wave devices
  • Photolithography

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this

Vanhille, K., Filipović, D., Nichols, C., Fontaine, D., Wilkins, W., Daniel, E., & Popović, Z. (2007). Balanced low-loss Ka-band μ-coaxial hybrids. In IEEE MTT-S International Microwave Symposium Digest (pp. 1157-1160). [4264034] https://doi.org/10.1109/MWSYM.2007.380335

Balanced low-loss Ka-band μ-coaxial hybrids. / Vanhille, Kenneth; Filipović, Dejan; Nichols, Christopher; Fontaine, Daniel; Wilkins, Wendy; Daniel, Erik; Popović, Zoya.

IEEE MTT-S International Microwave Symposium Digest. 2007. p. 1157-1160 4264034.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Vanhille, K, Filipović, D, Nichols, C, Fontaine, D, Wilkins, W, Daniel, E & Popović, Z 2007, Balanced low-loss Ka-band μ-coaxial hybrids. in IEEE MTT-S International Microwave Symposium Digest., 4264034, pp. 1157-1160, 2007 IEEE MTT-S International Microwave Symposium, IMS 2007, Honolulu, HI, United States, 6/3/07. https://doi.org/10.1109/MWSYM.2007.380335
Vanhille K, Filipović D, Nichols C, Fontaine D, Wilkins W, Daniel E et al. Balanced low-loss Ka-band μ-coaxial hybrids. In IEEE MTT-S International Microwave Symposium Digest. 2007. p. 1157-1160. 4264034 https://doi.org/10.1109/MWSYM.2007.380335
Vanhille, Kenneth ; Filipović, Dejan ; Nichols, Christopher ; Fontaine, Daniel ; Wilkins, Wendy ; Daniel, Erik ; Popović, Zoya. / Balanced low-loss Ka-band μ-coaxial hybrids. IEEE MTT-S International Microwave Symposium Digest. 2007. pp. 1157-1160
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