Tauno Vähä-Heikkilä

20032019
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Research Output 2003 2018

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Article
2017
1 Citation (Scopus)

Low loss KU- to KA-band analog DMTL phase shifter with 360° phase shift

Saijets, J., Rantakari, P. & Vähä-Heikkilä, T., 1 Jun 2017, In : Microwave and Optical Technology Letters. 59, 6, p. 1401-1404 4 p.

Research output: Contribution to journalArticleScientificpeer-review

Phase shifters
extremely high frequencies
Phase shift
transmission lines
microelectromechanical systems
2016
4 Citations (Scopus)

A 2.4 GHz SiP radio module with embedded antenna and IPD matching and filter circuits

Hirvonen, M., Vähä-Heikkilä, T., Yrjänä, S., Mäkelä, R. & Järvinen, P., 1 Sep 2016, In : Microwave and Optical Technology Letters. 58, 9, p. 2062-2064 3 p.

Research output: Contribution to journalArticleScientificpeer-review

antennas
modules
Antennas
filters
Antenna grounds
2015
1 Citation (Scopus)

A W-band RF-MEMS switched LNA in a 70 nm mHEMT process

Reyaz, S., Gustafsson, A., Samuelsson, C., Malmqvist, R., Grandchamp, B., Rantakari, P. & Vähä-Heikkilä, T., 2015, In : International Journal of RF and Microwave Computer-Aided Engineering. 25, 7, p. 639-646

Research output: Contribution to journalArticleScientificpeer-review

Low noise amplifiers
Gallium arsenide
Monolithic microwave integrated circuits
Noise figure
Switches
1 Citation (Scopus)

Low temperature co-fired ceramic antenna for 35 GHz applications with a wideband GCPW to stripline transition

Brunea, A., Neculoiu, D., Lahti, M. & Vähä-Heikkilä, T., 2015, In : Romanian Journal of Information Science and Technology. 17, 4, p. 305-319

Research output: Contribution to journalArticleScientificpeer-review

Coplanar waveguides
Antennas
Strip telecommunication lines
Insertion losses
Temperature
2014
20 Citations (Scopus)

A 3-D miniaturized high selectivity bandpass filter in LTCC technology

Arabi, E., Lahti, M., Vähä-Heikkilä, T. & Shamim, A., 2014, In : IEEE Microwave and Wireless Components Letters. 24, 1, p. 8-10

Research output: Contribution to journalArticleScientificpeer-review

Bandpass filters
bandpass filters
selectivity
filters
rejection
2013
1 Citation (Scopus)

W-band RF-MEMS dicke switch networks in a GaAs MMIC process

Reyaz, S. B., Samuelsson, C., Malmqvist, R., Seok, S., Fryziel, M., Rolland, P-A., Grandchamp, B., Rantakari, P. & Vähä-Heikkilä, T., 2013, In : Microwave and Optical Technology Letters. 55, 12, p. 2849-2853 5 p.

Research output: Contribution to journalArticleScientificpeer-review

Monolithic microwave integrated circuits
microelectromechanical systems
MEMS
switches
Switches
2011
35 Citations (Scopus)

60-GHz millimeter-wave identification reader on 90-nm CMOS and LTCC

Pursula, P., Karttaavi, T., Kantanen, M., Lamminen, A., Holmberg, J., Lahdes, M., Marttila, I., Lahti, M., Luukanen, A. & Vähä-Heikkilä, T., 2011, In : IEEE Transactions on Microwave Theory and Techniques. 59, 4, p. 1166-1173 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
readers
Millimeter waves
millimeter waves
CMOS
modules

A K-band RF-MEMS-enabled reconfigurable and multifunctional low-noise amplifier hybrid circuit

Malmqvist, R., Samuelsson, C., Gustafsson, A., Rantakari, P., Reyaz, S., Vähä-Heikkilä, T., Rydberg, A., Varis, J., Smith, D. & Baggen, R., 2011, In : Active and Passive Electronic Components. 2011, 7 p., 284767.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
Low noise amplifiers
MEMS
Networks (circuits)
Noise figure
Electric power utilization
15 Citations (Scopus)

Wide-band radio frequency micro electro-mechanical systems switches and switching networks using a gallium arsenide monolithic microwave-integrated circuits foundry process technology

Rantakari, P., Malmqvist, R., Samuelsson, C., Leblanc, R., Smith, D., Jonsson, R., Simon, W., Saijets, J., Baggen, R. & Vähä-Heikkilä, T., 2011, In : IET Microwaves, Antennas and Propagation. 5, 8, p. 948-955 8 p.

Research output: Contribution to journalArticleScientificpeer-review

Gallium arsenide
Switching networks
Monolithic microwave integrated circuits
Foundries
Switches
2010
40 Citations (Scopus)

Wafer-level transfer technologies for PZT-based RF MEMS switches

Guerre, R., Drechsler, U., Bhattacharyya, D., Rantakari, P., Stutz, R., Wright, R. V., Milosavljevic, Z. D., Vähä-Heikkilä, T., Kirby, P. B. & Despont, M., 2010, In : Journal of Microelectromechanical Systems. 19, 3, p. 548-560 13 p.

Research output: Contribution to journalArticleScientificpeer-review

Technology transfer
MEMS
Switches
Degradation
Insertion losses
2009
28 Citations (Scopus)

Switched Beam Antenna Based on RF MEMS SPDT Switch on Quartz Substrate

Cheng, S., Rantakari, P., Malmqvist, R., Samuelsson, C., Vähä-Heikkilä, T., Rydberg, A. & Varis, J., 2009, In : IEEE Antennas and Wireless Propagation Letters. 8, p. 383-386 4 p.

Research output: Contribution to journalArticleScientificpeer-review

Open Access
MEMS
Quartz
Poles
Switches
Antennas
2008
18 Citations (Scopus)

An analog RF MEMS slotline true-time-delay phase shifter

Van Caekenberghe, K. & Vähä-Heikkilä, T., 2008, In : IEEE Transactions on Microwave Theory and Techniques. 56, 9, p. 2151-2159 9 p.

Research output: Contribution to journalArticleScientificpeer-review

Phase shifters
microelectromechanical systems
MEMS
Time delay
slot antennas
17 Citations (Scopus)

G-band distributed microelectromechanical components based on CMOS compatible fabrication

Vähä-Heikkilä, T. & Ylönen, M., 2008, In : IEEE Transactions on Microwave Theory and Techniques. 56, 3, p. 720 - 728 9 p.

Research output: Contribution to journalArticleScientificpeer-review

microelectromechanical systems
MEMS
CMOS
Fabrication
fabrication
59 Citations (Scopus)

Millimeter-wave identification: A new short-range radio system for low-power high data-rate applications

Pursula, P., Vähä-Heikkilä, T., Müller, A., Necoloiu, D., Konstantinidis, G., Oja, A. & Tuovinen, J., 2008, In : IEEE Transactions on Microwave Theory and Techniques. 56, 10, p. 2221-2228 8 p.

Research output: Contribution to journalArticleScientificpeer-review

radio range
radio beacons
Radio systems
Millimeter waves
millimeter waves
2007
18 Citations (Scopus)

RF MEMS impedance tuners for 6-24 GHz applications

Vähä-Heikkilä, T., Van Caekenberghe, K., Varis, J., Tuovinen, J. & Rebeiz, G. M., 2007, In : International Journal of RF and Microwave Computer-Aided Engineering. 17, 3, p. 265-278

Research output: Contribution to journalArticleScientificpeer-review

Tuners
MEMS
Capacitors
Topology
2006
9 Citations (Scopus)

Amorphous metal alloy based MEMS for RF applications

Ylönen, M., Vähä-Heikkilä, T. & Kattelus, H., 2006, In : Sensors and Actuators A: Physical. 132, 1, p. 283-288 6 p.

Research output: Contribution to journalArticleScientificpeer-review

microelectromechanical systems
MEMS
Metals
tensile stress
Millimeter waves
1 Citation (Scopus)

A novel method for millimeter-wave on-wafer characterization of reflect patch antennas

Farinelli, P., Vähä-Heikkilä, T., Säily, J., Sorrentino, R. & Tuovinen, J., 2006, In : IEEE Antennas and Wireless Propagation Letters. 5, 1, p. 556-558 3 p.

Research output: Contribution to journalArticleScientificpeer-review

Microstrip antennas
Millimeter waves
Steerable antennas
Antenna reflectors
Monolithic microwave integrated circuits
2005
33 Citations (Scopus)

A 20-50 GHz RF MEMS single-stub impedance tuner

Vähä-Heikkilä, T., Varis, J., Tuovinen, J. & Reibeiz, G. M., 2005, In : IEEE Microwave and Wireless Components Letters. 15, 4, p. 205 - 207 3 p.

Research output: Contribution to journalArticleScientificpeer-review

microelectromechanical systems
MEMS
radio frequencies
impedance
Capacitors
2004
48 Citations (Scopus)

A 4–18‐GHz reconfigurable RF MEMS matching network for power amplifier applications

Vähä-Heikkilä, T. & Rebeiz, G. M., 2004, In : International Journal of RF and Microwave Computer-Aided Engineering. 14, 4, p. 356 - 372 17 p.

Research output: Contribution to journalArticleScientificpeer-review

Power amplifiers
MEMS
Antenna phased arrays
Capacitors
Capacitance
2003
29 Citations (Scopus)

A wide-band on-wafer noise parameter measurement system at 50-75 GHz

Kantanen, M., Lahdes, M., Vähä-Heikkilä, T. & Tuovinen, J., 2003, In : IEEE Transactions on Microwave Theory and Techniques. 51, 5, p. 1489-1495 7 p.

Research output: Contribution to journalArticleScientificpeer-review

wafers
broadband
High electron mobility transistors
high electron mobility transistors
Waveguides
23 Citations (Scopus)

On-wafer noise parameter measurements at W-band

Vähä-Heikkilä, T., Lahdes, M., Kantanen, M. & Tuovinen, J., 2003, In : IEEE Transactions on Microwave Theory and Techniques. 51, 6, p. 1621-1628 8 p.

Research output: Contribution to journalArticleScientificpeer-review

wafers
Scattering parameters
High electron mobility transistors
Frequency bands
high electron mobility transistors