Patents

Focus’ main disruptive advantage is Innovation. Starting in 2000 Focus now owns 127 patents and has another 26 patents pending, all on various tuner types and associated calibration, tuning and measurement applications.

In the process Focus has invented all new tuner types, beyond the traditional single probe wideband impedance slide screw tuner known since 1985:

The Harmonic Rejection Tuner               (PHT)
The High Gamma Prematching Tuner  (PMT)
The Frequency Selective Tuner              (FST)
The 2 Frequency Harmonic Tuner         (MPT-Lite)
The 3 Frequency Harmonic Tuner         (MPT-Classic)
The 4 Frequency Harmonic Tuner         (MPT-Quattro)
A line of Low Frequency Tuners, the LFT’s (10-250MHz)

Since 2015 Focus also owns 3 Mesuro patents on active tuning technology.

This is an up-to-date list of all US Patents issued to Focus Microwaves Inc.

wdt_ID s Icon Patent Description Date Link
1 6,297,649 Harmonic Rejection Load Tuner 2001-10-02
2 6,414,563 Low-Loss Microwave Device Test Fixture with Adjustable Blocks 2002-07-02
3 6,639,393 Methods and Apparatus for Time-Domain Measurement with a High Frequency Circuit Analyzer 2003-10-28
4 6,674,293 Adaptable Pre-Matched Tuner System and Method 2004-01-06
5 6,850,076 Microwave Tuners for Wideband High Reflection Applications 2005-02-01
6 6,998,836 Low Loss Integration of Wafer Probes with Microwave Tuners 2006-02-14
7 7,034,629 High Frequency, High Reflection Pre-Matching Tuners with Variable Zero Initialization 2006-04-25
8 7,035,628 High Reflection Microwave Tuner Using Metal-dielectric Probe and Method 2006-05-30
9 7,102,457 Mechanically Balanced Microwave Load Pull Tuner 2006-09-05
10 7,135,941 Triple Probe Automatic Slide Screw Load Pull Tuner and Method 2006-11-14
11 7,248,866 Frequency Selective Load Pull Tuner and Method 2007-07-24
12 7,385,461 Method of Combining Signals and Device Therefor 2008-06-10
13 7,449,893 Harmonic Load Pull Tuner with Resonant Pre-matching Module 2008-11-11
14 7,561,004 Harmonic Rejection Tuner with Adjustable Resonators 2009-07-14
15 7,646,267 Low Frequency Electro-Mechanical Impedance Tuner 2010-01-12
16 7,646,268 Low Frequency Harmonic Load Pull Tuner and Method 2010-01-12
17 7,816,926 High Frequency Circuit Analyser 2010-10-19
18 8,188,816 Compact Harmonic Impedance Tuner 2012-05-29
19 8,203,348 Autonomous Impedance Tuner with Human Control Interface 2012-06-19
20 8,212,628 Harmonic Impedance Tuner with Four Wideband Peobes and Method 2012-07-03
21 8,212,629 Wideband Low Frequency Impedance Tuner 2012-07-03
22 8,358,186 Impedance Tuners with Resonant Probes 2013-01-22
23 8,362,787 Harmonic Rejection Tuner with Adjustable Short Circuited Resonators 2013-01-29
24 8,400,238 Compact Harmonic Impedance Tuner 2013-03-19
25 8,405,405 Wideband I-V Probe and Method 2013-03-26
26 8,405,466 Wideband Low Frequency Impedance Tuner 2013-03-26
27 8,405,475 Harmonic Impedance Tuner with Four Wideband Probes and Methods 2013-03-26
29 8,410,862 Compact Multi Frequency-Range Impedance Tuner 2013-04-02
30 8,427,255 Self-Adjustable Probes for Slide Screw Impedance Tuners 2013-04-23
31 8,461,946 Impedance Tuners with Mechanical Stop 2013-06-11
32 8,466,758 Impedance Tuner with Integrated Bias Network 2013-06-18
33 8,497,689 Method for Reducing Power Requirements in Active L/P Systems 2013-07-30
34 8,497,745 VHF Harmonic Impedance Tuner 2013-07-30
35 8,896,401 Calibration and Tuning Using Compact Multi Frequency-Range Impedance Tuners 2013-11-25
36 8,629,742 VHF Harmonic Impedance Tuner 2014-01-14
37 8,786,293 Noise parameter Measurement System and Method 2014-07-22
38 8,841,921 Adjustable Signal Sampling Sensor and Method 2014-09-23
39 8,854,162 Method for Preventing Electrical Short in Impedance Tuners Using Mechanical Stop 2014-10-07
40 8,919,861 Improved Mechanically Controlled Variable Capacitors for Impedance Tuner 2014-12-16
41 8,933,707 Waveguide Tuners with Planarity Adjustment for Wafer Probing 2015-01-13
42 8,975,988 An Impedance Tuner using Dielectrically Filled Airline 2015-03-10
43 9,041,498 A Mechanically Short Multi-Carriage Tuner and Method 2015-05-26
44 9,213,056 Multi-Source Active Injection Load Pull System and Method 2015-12-15
45 9,252,471 Wideband Attenuation and Phase Controller 2016-02-02
46 9,252,738 Wideband Tuning Probes for Impedance Tuners and Method 2016-02-02
47 9,257,963 Impedance Tuners with Rotating Probes 2016-02-09
48 9,267,977 A Method for Maximizing for Reflection Factor of Impedance Tuners 2016-02-23
49 9,276,551 Impedance Tuners with Rotating Multi-Section Probes 2016-03-01
50 9,310,410 A Load and Source Pull Test System for RF and Baseband Frequencies 2016-04-12
51 9,322,843 A Method for Planarity Alignment of Wafer Probes 2016-04-26
52 9,325,290 An Impedance Tuner with Adjustable Electrical Length 2016-04-26
53 9,331,670 Gamma Boosting Unit (GBU) for Hybrid Load and Source Pull 2016-05-03
54 9,335,345 A Method for Planarity Alignment of Waveguide Wafer Probes 2016-05-10
55 9,344,061 Low Frequency Coaxial Capacitors and Tuners 2016-05-17
56 9,366,710 Noise Parameter Extraction Method 2016-06-14
57 9,112,250 A Wideband Attenuation and Phase Controller 2016-08-18
58 9,431,999 Intelligent Mechanical Balancing Apparatus for Slide Screw Tuner 2016-08-30
59 9,459,336 Hybrid Load Pull System and Method 2016-10-04
60 9,541,592 Noise Parameter Measurement System 2017-01-10
61 9,553,376 Coaxial Alignment Instrument Adapter 2017-01-24
62 9,602,072 Circular Impedance Tuner 2017-03-21
63 9,620,842 Compact Two Probe Impedance Tuner 2017-04-11
64 9,625,556 Method for Calibration and Tuning with Impedance Tuners 2017-04-18
65 9,647,629 Variable Capacitors for High Accuracy Tuning 2017-05-09
66 9,653,332 Wafer Probe Holder for Planarity and Orientation Adjustment 2017-05-16
67 9,664,718 High Speed Hybrid Active Load Pull 2017-05-30
68 9,666,928 High Power Slide Screw Tuners 2017-05-30
69 9,716,303 Low Cost Probes for Slide Screw Tuners 2017-07-25
70 9,716,483 Wideband Slide Screw Impedance Tuner 2017-07-25
71 9,722,569 Multi-band Low Frequency Impedance Tuner 2017-08-01
72 9,835,652 Multi-Frequency Attenuation and Phase Shifters 2017-12-05
73 9,838,986 Calibration of High Frequency Signal Measurement Systems 2017-12-05
74 9,857,410 Tuning Method for Hybrid Active Injection Load Pull System 2018-01-02
75 9,866,203 High Reliability Power Tuners 2018-01-09
76 RE46703 High Frequency High Reflection Pre-Matching Tuners with Variable Zero Initialization 2018-02-06
77 9,893,717 Multi-band Low Frequency Impedance Tuner 2018-02-13
78 9,897,637 High Frequency Phase Reference Standard Signal 2018-02-20
79 9,899,984 Compact Multi-Carriage Impedance Tuner and Method 2018-02-20
80 9,921,253 Method for Reducing Power Requirements in Active Load Pull System 2018-03-20
81 9,960,472 Programmable Amplitude and Phase Controller 2018-05-01
82 10,001,521 Transistor Test Fixture with Integrated Couplers and Method 2018-06-19
83 10,006,951 Stable Load Pull Operation Using Tuners 2018-06-26
84 10,097,165 High Gamma Compact Harmonic Tuner 2018-10-09
85 10,103,713 Hybrid Electro-Mechanical Tuner 2018-10-16
86 10,168,362 Active Slide Screw Tuner 2019-01-01
87 10,177,428 Compact Harmonic Amplitude and Phase Controller 2019-01-08
88 10,177,429 Hybrid Harmonic Impedance Tuner 2019-01-08
89 10,187,228 Integrated Split Signal Hybrid Harmonic Tune 2019-01-22
90 10,184,972 Transistor Test Fixture with Convex Surface 2019-01-22
91 10,276,910 Programmable Harmonic Amplitude and Phase Controller 2019-04-30
92 10,281,510 Load Pull Method for Transistors Driven by Modulated Signal 2019-05-07
93 10,290,428 High Power Low Frequency Tuners 2019-05-14
94 10,317,445 High Gamma Electronic Tuner 2019-06-17
95 10,345,370 Hybrid Harmonic Tuner 2019-09-07
96 10,345,422 Compact Harmonic Tuner System with Rotating Probes 2019-09-07
97 10,348,273 Hybrid Digital Electronic Tuner 2019-09-07
98 10,429,426 Setup and Method for Noise Parameter Measurement 2019-10-01
99 10,429,484 Compact Harmonic Tuner System with Rotating Probes 2019-10-01
100 10,444,266 Hybrid Split Signal Load Pull System with Wave-Probe 2019-10-25
101 10,451,702 Calibration Method for High Gamma Combo Tuner 2019-10-22
102 10,520,541 Hybrid Electronic Tuner 2019-12-31
103 10,591,511 Frequency Adjustable Pre-Matching Coaxial Transistor Test Fixture 2020-03-17
104 10,591,530 Coplanar Load Pull Test Fixture for Wave Measurements 2020-03-17
105 10,591,571 Adjustable Pre-Matching Coaxial Transistor Test Fixture 2020-03-17
106 10,637,122 A Hermetic RF Connection for On-Wafer Operation 2020-04-28
107 10,637,179 Slide Screw Tuners with Offset Tuning Probes and Method 2020-04-28
108 10,686,239 Slide Screw Tuners with Offset Probes and Method 2020-06-16
109 10,693,208 High Gamma Disc-Tuning Probes for Impedance Tuners 2020-06-23
110 10,693,437 High Gamma On-Wafer Load Pull Test System 2020-06-23
111 10,700,402 Compact Millimeter-Wave Tuner 2020-06-30
112 10,725,092 Pre-Matched Coaxial Transistor Test Fixture 2020-07-28
113 10,725,094 Active Electronic Tuner 2020-07-28
114 10,734,697 Coaxial Adjustable Wave Probe 2020-08-04
115 10,756,694 MHz Range Harmonic Impedance Tuner and Method 2020-08-25
116 10,804,872 Liquid cooled High Power Impedance Tuner 2020-10-13
117 10,884,046 Calibration and Load Pull Method for RF and Baseband Frequencies 2021-01-05
118 RE45,667 Adaptable Pre-Matched Tuner Systems and Method 2015-12-15
119 10,938,490 Calibration Method for Coupler-Tuner Assembly 2021-03-02
120 10,971,791 Transmission Line for High Power Tuners 2021-04-06
121 11,002,762 Millimeterwave Tuners with External Airline 2021-05-11
122 11,006,288 Method for Experimental Verification of RF Matching Networks 2021-05-11

This is an up-to-date list of all US Patents pending for Focus Microwaves Inc.

wdt_ID ID s Icon Patent Description Date Link
45 16/105,143 High Speed Hybrid Load and Source Pull System 2018-08-20
2 31 16/262,112 Waveguide Slide Screw Tuner with Rotating Disc Probes 2019-01-30
65 16/863,182 Low Profile High Speed Load Pull Tuner System 2020-04-30
74 17/178,693 Experimental Verification and Optimization of Two Stage RF Amplifier 2020-02-18
5 28 16/250,254 Integrated Pre-Matching Module for Millimeter-Wave Tuner 2019-01-17
78 17/232,603 Wafer Probe Integration with Load Pull Tuner 2021-04-16
64 16/860,760 Simple Directional Coupler 2020-04-28
72 17/102,936 On-Wafer Tuner System & Method 2020-11-24
79 17/308,261 Anti-Skewing Load Pull Tuner with Rotating Probe 2021-05-05
10 23 16/165,531 Coaxial Adjustable Wave Probe 2018-10-19
63 16/850,451 Integrated Tera-Hertz Slide Screw Tuner 2020-04-16
57 16/743,822 A Coaxial TRL Calibration Kit Adapter 2020-01-15
77 17/219,024 Hermetic Load and Source Pull Wafer Probe Station 2021-03-31
67 16/931,021 Directional Wire Coupler for Waveguide Tuners and Method 2020-06-16
68 16/987,260 High Speed Calibration for Impedance Tuner 2020-08-06
62 16/849,503 Temperature Controlled High Power Tuner 2020-04-15
61 16/839,749 Digital Load Pull Tuner 2020-04-03
60 16/839,579 Low Frequency Active Load Pull Tuner 2020-04-03
59 16/838,786 Digital Hybrid Load Pull System 2020-04-02
75 17/178,693 Experimental Verification and Optimization of Two Stage RF Amplifier 2021-02-18
53 16/250,254 Integrated Pre-Matching Module for Impedance Tuner 2019-01-17
54 16/590,817 Shielded RF and Thermal Connection for On-Wafer Load Pull 2019-10-02
55 16/592,058 Low Profile Slide Screw Tuners and Method 2019-10-3
56 16/698,424 Harmonic Hybrid Electronic Load Pull Tuner (62/772,829) 2019-11-27
40 40 16/568,336 Active Harmonic Load Pull Impedance Tuner (Div. 16/563,338) 2019-09-12
66 16/928,273 High Power Dual Probe Tuner and Method 2020-06-14
43 16/104,988 Transforming Load Pull Test Fixture for Wave Measurements 2018-08-20
36 36 16/445,646 Multi-Octave Hybrid Harmonic Load Pull Tuner 2019-06-19
58 16/787,750 Fast Impedance Tuner Calibration 2020-02-11
76 17/197,307 Low Profile Millimeterwave Load Pull Tuner 2021-03-10
39 39 16/563,338 Active Harmonic Load Pull Impedance Tuner 2019-09-06
35 35 16/418,567 Heterodyne Active Electronic Load Pull Tuner 2019-05-21
37 37 16/454,120 Active Load Pull Tuning System for Modulated Signal 2019-06-27
38 38 16/509,936 Hybrid Harmonic Source Pull Tuner System 2019-07-12
69 16/993,688 Slide Screw Tuner with Adjustable Pitch 2020-08-14
70 17/002,446 Anti-Skewing Impedance Tuner 2020-08-25
71 17/015,849 High-Speed High-Resolution Slide Screw 2020-09-09
73 17/108,290 Load Pull Pattern Generation 2020-12-01

This is an up-to-date list of all provisional US Patents for Focus Microwaves Inc.

wdt_ID ID s Icon Patent Description Date Link