Overview of Link Microtek Ltd. Engineering Design and manufactured in the United Kingdom

1. Engineering Division
Short Form Products Catalogue
Presentation
2009
www.linkmicrotek.com
Tel: +44 1256 355 771 Fax: +44 1256 355 118 Email: sales@linkmicrotek.com

2. A walk through the product catalogue

3. Adaptors / Adapters – Section 1
What we need to know:-
Waveguide size – eg WR90 (WG16) 8.2-12.4 GHz
Flange – eg UBR100 or UG-135/U for WR90
Coax connector – eg SMA, N, TNC, 3.5mm, K
Power – peak, average / CW
Frequency – full band, narrow
Spec – VSWR
Material / Finish
Typical application – lab test
Question – what does it connect to?

4. Adaptors – Rectangular
WR75 low cost Satcom Ku-band N-type Adaptor
Model: AM75A-N
Ku RX 10.95-12.75GHz, TX 13.75-14.5GHz
PBR120 flange with M4 tapped holes WR650 High Power Waveguide Adaptor to N-type Coax
Machined from solid Model: AMR650A-N-HP
Frequency:1.12 - 1.7
Power: 400 W CW
VSWR: Full band 1.5:1 (14 dB RL)
Optimised for 1.5 - 1.7 GHz 1.12:1 (25 dB RL).
Flange: UDR14
Connector: N-type (f)
Material: Aluminium
Finish: Alochrom, painted satin black
AM28A-K WR28 26.5-40.0GHz
Low Power, K connector

5. Adaptors – Double Ridge
AM750A-S WRD750 7.5-18GHz, SMA(f)
AM650A-T WRD650 6.5-18GHz, TNC(f)
AM750A-N(HP) WRD750, N(f)
High Power
AM650A-T(M)HP, 200W, TNC(m)

6. Adaptors – End Launch
WRD650 End Launch Adaptor to SMA(f)
WR62 End Launch Adaptor to SMA(f)
Model: AM650A-S(EL)
Model: AM62A-S(EL)
Full freq range 6.5-18 GHz
Plain Flange , alt tap & clear holes

7. Adaptors – Special / Custom
Custom 45deg angled H & E plane adaptors
Horn antenna adaptor for N-type input
Long launch low frequency adaptor
Custom double ridge adaptors
WR975, 075-1.12 GHz
For non 50 ohm Helix TWT output

8. Attenuators – Section 2
What we need to know:-
Waveguide size
Attenuation – fixed or variable
Flanges or connectors
Power
Frequency
Spec – VSWR, attn accuracy
Cooling – forced air, convection
Uni or bi-directional?
Size / weight / outline
Material / Finish
Typical application – high power testing
Question – what are the characteristics of the power?
ie harmonic rich?

9. Power Attenuators
WR90 High Power Attenuator – Short Directional
Model: AM90J-10HP
Frequency 8.0-10.0GHz, Mean Attn:: 10.0 +/-0.3dB WR62 High Power Short Attenuator with Coax Output
Power handling: 400W mean Model: AM62J-20HP
Attn variation with freq: +/-0.5dB Waveguide input, SMA (f) output, Freq: 13.50-14.50GHz
Attn variation with temp: designed to meet +/-0.2dB Power: 200W av, VSWR: 1.2:1 max, Length: 150 mm
VSWR: 1.3:1 max, Internal w/g air pressure: 15 psia Flanges: UBR140, Material: Aluminum
Flanges (2pl): UBR 100 Finish: Alochrom, painted satin black
Material: Aluminium, Finish: Alochrom Forced air cooling recommended
Forced air cooling required

10. Power Attenuators
WR112 25.5dB High Power Attenuator
Model: AM112J-25.5HP
Freq: 8.0 -9.0 GHz, Attenuation : 25.5 dB +/- 0.5 dB
Power: 200W Mean, 160 kW pk, VSWR: 1.2:1 max
Length: 410 mm, Flanges: UBR84, Pressure: 1 bar.
Material: Aluminum, Finish: Alochrom, painted satin black

11. Coaxial Attenuators
Coaxial High Power Microwave Bi-directional Fixed 30dB Attenuator
Model: AMCOJ-HP-30N
Frequency: 7.5-18GHz, Power: 300W CW, VSWR: 1.3:1
Connectors: N(f) - N(m), Attenuation: 30dB
Length: 400mm max.
This attenuator is convection cooled and does not require forced air cooling.
Note:- goes hand in hand with Narda DC-6GHz 769 series!!

12. Variable Attenuators
WR90 30dB Variable Attenuator WR284 2.6-3.95 GHz30dB Variable Attenuator

13. Couplers – Section 3
What we need to know:-
Coupler style – eg broadwall, cross-guide
Type – single directional, dual or bi
Waveguide size
Coupling values
Flanges or connectors
Power
Frequency
Spec – directivity
Size / weight / outline
Material / Finish
Typical application – power monitoring
Question – what coupling flatness to they need?
what are they trying to measure?

14. Couplers - Broadwall
WRD580 Short 50dB Triband Broadwall Coupler
Model: AM580C-50S
WR28 10dB Broadwall Directional Coupler
Freq: 5.8-16GHz, C, X & Ku bands
Model: AM28C-10
Mean coupling: 50 +/-1dB, coupling flatness: +/-0.6dB
Frequency: 26.5-40GHz, Mean coupling: 10dB +/-0.5dB
Directivity:>20dB
Directivity: >35dB, Freq Sensitivity: +/-0.5dB
VSWR (5.85-14.5GHz): main line: 1.1:1
Flanges (3pl): UG-599/U, Finish: Painted satin black
Finish: Alochrom, painted satin black.
Note:- equivalent to obsolete Narda part V1067B

15. Couplers - Crossguide
WR28 Waveguide Dual Cross Guide Coupler WR187 Waveguide 30dB Crossguide Coupler
Model: AM28X-30K-40K Model: AM187X-30
Freq: 26.5-40GHz, Power: 50W CW, Two forward ports Freq: 3.95-5.85 GHz
Connectors (2): K-type (f), Mean coupling: 30 and 40 dB With integral load, Flanges (3 pl): Round, cover
Flanges (2): UBR320, Finish: Painted satin black.
Customer: Matsushita?

16. Couplers – Sampler / Loop
WRD580 30dB Power Sampler Dual Loop Coupler unit, Forward and Reverse
Model: AM580P-30N Model: AM75CD-20LP
Freq: 5.8-16GHz, coupling: 30dB Frequency: 14.5GHz, Insertion Loss: 0.3dB max.
Freq sensitivity: +/-1.5 dB Coupling (both couplers): 20+/-1dB.
Directivity: 0dB, Connector: N(f) Directivity 26dB (40dB design aim)
Flanges (2pl): Alt tap & clear Power: 100 W CW, Coupling Connectors SMA (f).
Finish: painted matt black epoxy Length 50 mm, Flanges UBR120.
Unit includes a custom inline adaptor

17. Filters – Section 4
What we need to know:-
Filter style – eg low, high or band pass,
reflective, absorptive
Waveguide size / coax connectors
Filtering requirements – passbands,
stopbands, rejection, insertion loss
Flanges
Power
Size / weight / outline
Material / Finish
Typical application – Amplifier signal cleaning
Question – what do they want the filter to do?

18. Filters – Bandpass & Lowpass
WR75 Lowpass Transmit Reject Filter
WR75 Bandpass Transmit Filter Model: AM75Q-LP
Model: AM75Q-BP Passband frequency: 10.95 – 12.75 GHz
Passband frequency: 14 - 14.5GHz Return Loss: >15 dB @ 10.95 –12.75 GHz
Passband Insertion loss: 0.6 dB max Insertion Loss: <0.2 dB @ 10.95 –12.75 GHz
Passband Return Loss: 23 dB max Rejection Frequency: 13.75 – 14.50 GHz
Rejection: 60 dB min to 13.67 & above 14.95 GHz. Rejection: >70 dB @ 13.75 – 14.50 GHz
Note: These are reflective filters

19. Filters – Coaxial & Absorption
Coaxial Bandpass Combline 2.2GHz Filter
WR90 Harmonic Low Pass Absorption Filter
Model: AMCOQ-BP2.2
Model: AM90Q-HARM
Passband: 2.2 GHz +/- 125 MHz,
Flanges: UBR100, Length: 220mm max
Connectors: 3.5(f),
Pass Band Freq: 8.2-12.4GHz
Ins Loss: <0.7 dB max, Return loss: 21dB max
Power: 400 W CW max
Reject Frequency: 14.5-18.0GHz
Ins Loss: >35dB, Return loss: 17dB max

20. Filters - Microstrip
Microstrip Bandpass Filter
Coupled Line
Fc 8 & 12GHz, BW 200 MHz
Note: picture has 2 filters Microstrip Lowpass Filters
Size: 20 x 25mm each Models: AMCOQ-LPX
Reject: above 5, 8 & 11GHz Microstrip Bandpass Filter
Note: picture has all 3 filters Wide Band Low Frequency
Size: 20 x 30mm each Model: AMCOQ-BP2
Fc: 2GHz, BW 750 MHz
Pass band IL: 1 dB
Rejection: up to 50dB
Power: 10W
Connectors: SMA(f)

21. Horn Antennas – Section 5
What we need to know:-
Frequency Range
Gain, Beam width, far field
Input – waveguide, coax
Power
Radome
Typical application – EMC Chamber
Question – does the customer need a rotary
or swivel joint for changing polarisation?

22. Antennas – Standard Gain
WR62 12.4-18.0GHz Standard Gain Horn WR112 7.05-10.0GHz 30 dB Standard Gain Horn Antenna
Model: AM62HA Model: AM112HA-30
Flange: UBR140, Flange: UBR84
Midband Gain: 20 dBi, Units supplied with theoretical plots of gain and beamwidth
Finish: Painted Satin Black. These units are not electrically tested

23. Antennas – Double Ridge & Octave
WRD750 Horn Antenna & Swivel Joint Assembly Octave Band Horn Antennas, Freq: 1-2, 2-4 & 4-8GHz
Model: AM750HA-SJ Models: AM1-2HA-N-OCT, AM2-4HA-OCT, AM4-8HA-N-OCT
Freq: 8-18GHz, Typ mid band horn gain: 12dBi Freq: 1.0-2.0GHz, Gain: 9-14.7dBi, Far field dist: 1023-2046 mm
Far field dist: 146mm, E and H plane 3dB BW: 49deg E & H-plane 3dB BW 66-33 Deg
Flange: plain, WRD750, all clearance holes Freq: 2.0-4.0GHz, Gain: 9.2-15 dBi, Far field dist: 526-1053 mm
Swivel rotation: 0-90 deg, VSWR: 1.45:1 max E & H-plane 3dB BW 65-33 Deg
Suitable for power: 250W CW, 1kWpk @ 4% duty. Freq: 4.0-8.0GHz, Gain: 9.5-15.3 dBi, Far field dist: 275-550 mm
E & H-plane 3dB BW 64-32 Deg
Connector: N-type (f), VSWR: 1.5:1 max
Power: 250W CW, Tripod mount

24. Antennas - Broadband
Wideband Horn Antenna, Freq: 1-18GHz Wideband Horn Antenna, Freq: 0.2-2.0GHz
Model: AM1-18HA Model: AM0.2-2HA
Typical spec: Antenna Factor: 24-46dB Connector N-type(f), Finish: Alochrom
E & H-plane 3dB BW 65-15 Deg VSWR <2.5:1
Connector: N-type (f) BW 85deg @ 0.2GHz reducing to 40deg @ 2GHz
Material: Aluminum alloy

25. Antennas – Rotary Antennas
Broadband Rotating Antenna
2-8GHz, N-type connector
High Power Rotary Antenna
1-2GHz, 7/8 EIA connector

26. Antennas - Custom
Circular Polarised Horn Antenna
Microwave
Gain 20dB, 3dB BW 20dB
WR430 Horn Antenna with Magnetron
Gain 20dBi, E & H-plane 3dB BW 19 deg.
Length: 980mm
Front to back ratio in the order of 30dB.

27. Antennas - Custom
Custom Double Ridge Horn Antenna
mmWave Horn Antenna
40 & 300GHz!!

28. OMTs – Section 6
What we need to know:-
TX & RX frequencies
Polarisation Typical application – Satcom Feed Assembly
Port isolations, insertion loss Question – can we integrate TX filtering into the
Ports rectangular, circular OMT assembly?

29. Rotary Joints – Section 7
What we need to know:-
Freq: – eg Ku band Tx 13.75-14.5GHz
Waveguide / coax
Style: single / dual channel
Power
Movement: rotating, continuous, dither etc.
Lifetime: contacting, non-contacting
Typical application – Marine VSAT, SNG
Question – Is the part used in a feedarm
and so do they need filters or an OMT?

30. Waveguide Rotaries
U-style WR187 Contactless Rotary
Model: AM187RJU
I-style WR75 Contactless Rotary
Model: WR75RJI
L-style WR75 Contactless Rotary
Model: WR75RJL

31. Coaxial Rotaries
DC-40GHz Coaxial Rotary, SMA DC-12.4GHz Coaxial Rotary, N-type (f-m)
Model: AMCORJ-WB Model: AMCORJ-12.4
Ku –band 13.75-14.5GHz Coaxial Rotary
DC-18GHz Coaxial Rotary, N-type (f) Contactless, N-type (f-m)
Model: AMCORJ-18 Model: AMCORJ-12.4

32. Custom Rotaries
Dual Channel Rotary

33. Custom Rotaries
Wideband Coaxial Rotary Joint with Slip Rings
DC-40GHz RF, 6 DC 15A Slip Rings

34. Sub Systems – Section 8
Tuner Coupler assembly
TWTA Output Satcom Output Feedarm
Feedarm

35. Waveguide Assemblies
WR187 not straight
pieces!!

36. TEM Cells – Section 9
EMC Testing
Field Strength testing & calibration

37. Terminations – Section 10
What we need to know:-
Waveguide size
Frequency
Power
VSWR
Flanges or connectors
Cooling – forced air, convection
Size / weight / outline
Material / Finish
Typical application – Amplifier Test
Question – does the customer need
couplers for power monitoring?

38. Terminations – Low Power
WR62 Medium Power Load
Model: AM62L-2
Freq: 12.4-18GHz
Power: 20W CW
Flange UBR140
WR187 Low Power Waveguide Load
WRD650 Medium Power Waveguide Load
Model: AM187L-1
Model: AM650L-2
Freq: 3.95-5.85GHz
Frequency: 6.5-18 GHz
Power: 1W
Power: 75W CW max, Length: 200mm
Flanges UAR48 & CAR48

39. Terminations – High Power
WR112 High Power Termination
AM112L-3(600W)
WR90 High Power Fan Cooled Load Freq: 7.05-10.0 GHz
Model: AM90L-4(1KW) Flange UBR84, Power 600W CW
Frequency: 8.2-12.4GHz VSWR: 1.1:1, Length 458mm
Power: 1000WCW Finish: Alochrom, Satin Black
Length: 570mm
Flanges: CBR100 Choke WR90 High Power Load
Pressure tight to 3PSI Custom Cooling Fins
Safe working temp.(typ 120 deg C) Power: 100W
Note: can provide equivalents to obsolete Narda models eg p/n 321B X-band 600W Load

40. Terminations - Coaxial
High Power Wideband TNC Load, 4-18GHz
Model: AMCOL-2-P30S-T
Load with integral 30dB SMA power sampler
Coaxial Load with special connector Freq: 4.0-18.0GHz, Power 200w CW, Connector: TNC(f)
Model: AMCOL-1-T VSWR: 1.45:1, Power sampler: 30dB +/-2.5dB
Frequency: 10 - 100 MHz, Power: 25 W CW Sample port connector: SMA(f)
Length: 80 mm
Connector: Push-on TNC(m) with M27x1.5 threaded fitting.

41. Waveguide Hardware – Section 11
Bends
WRD750 Machined E-bend - AM750ME WR90 Cast E & H bends – AM90E & AM90H
WR28 swept copper H bends – AM28H Custom angle WRD650 E bend

42. Flexible
WR75 6 inch Flex Twist Section
WRD750 Short Flex Twist Section
WR90 Waveguide Assembly with Flex only Section WR62 Flex Twist Waveguide Assembly

43. Straights
WRD650 Straights
WR90 Flange Adaptors
WR187 Misty Beige ‘Nearly’ Straights!!

44. Transitions & Tapers
Custom taper from WRD584 to WR62
Model: AM584-62 Models: AM62-75 & AM51-42
Note: WRD584 5.84-18.4GHz
Satcom Quad band
Note: normal operation is only in overlapping bands

45. Twists
WRD650 90deg Twist
WR28 90deg Twist

46. Additional Products
• Additional Products not in current short form catalogue
– Swivel Joints
– Tees / Hybrids
– Mismatches & Short Circuits
– Delay Lines
– Windows
– Quick Release Flanges
– Fixing Kits & Waveguide Assembly Kits
– mmWave parts
– Pressure Inlets & Desiccators
– Waveguide Switches
– Active Products
– System & Assembly Work
• New web site – www.linkmicrotekeng.com

47. Swivel Joints
WR90 +/-45 deg WRD750 0-90 deg
WR28 +/-45 deg

48. Waveguide Tees/ Hybrids
WR284 and WR90 WR90 Hybrid Combiner
Magic Tees

49. Mismatches & Short Circuits
Low power variable mismatch
High power 1000Ω coax mismatch load
N-type mismatch load set Variable Short Circuit

50. Delay Lines
Coaxial Delay Lines
Model: AMCO-DELI-xx
xx – ns delay
Also inverted delay

51. Windows
Kapton Windows
Ceramic

52. Quick Release Flanges

53. Fixing Kits & Waveguide Assembly Kits
Gaskets, Screws, Shims etc. WR75 components for SNG vehicle
fit out

54. mmWave Components
WR10 75-110GHz Waveguide Parts
WR22 33-50GHz Standard Gain
Horn Antenna
mmWave Components - designed but not tested above 40GHz

55. Pressure Inlets & Desiccators
Desiccators – keeping waveguide
Pressure Inlet - for pressurising Systems dry / free of moisture
waveguide systems

56. Waveguide Switches
WR75 Waveguide Transfer Switch
Model: AM75SWI
Frequency: 10 – 15 GHz
Voltage: 24 V DC
Return Loss : 28 dB min
Insertion loss : 0.05 dB max
Isolation: 70 dB typ
Pressure : 1 bar
Material : Aluminium, Finish : Alochrom.
Options : Manual over-ride, Manual, Indicators
Failsafe, Latching.

57. Active Capability
A very new capability for Link
Setting up – early days.
Looking for RFQs
Areas:-
Active modules
Integrated assemblies
Custom modules not available
off the shelf.
Small batch
Not Hi Rel / Space

58. Active Capability
Microstrip building blocks:-
0.3-3GHz
LNA Module Amplifiers
Mixers
Oscillators
Filters
5 GHz PA Module

59. System Work
Microwave Power Monitoring Test System

60. System Work
Microwave Power Monitoring Test System

61. System Work
Automatic Electronic Motor Driven Variable-Phase Mismatch System
WR284 High Power

62. System Work
Communications Combiner System

63. System Work
High Power Amplifier System
Communications Controller
System

64. System Test
System on High Power Test
200W 7.5-18GHz

65. System Test
Environmental Test
of amplifier modules