By Andy Barter
Is a brand new compilation of articles aimed toward people who are drawn to construction apparatus fo rthe beginner radio microwave bands. The designs during this booklet are from authors everywhere in the international who're prepared microwave constructors themselves. This guarantees that every one of the tasks use smooth suggestions and recent components... while you're already energetic at the microwave bands or just searching for attention-grabbing initiatives Microwave understand how will express you ways effortless it's to turn into extra energetic utilizing smooth units and equipment.
1 Antennas 1
• Weatherproof microwave antennas
• 6cm antenna
• Vivaldi antennas
2 energy Amplifiers 47
• 1W energy amplifier for nine - 11GHz
• 23cm amplifier
3 Measuring apparatus 59
• enhancing Harmonic reaction of the HP8555A
• 1OMHz- 10GHz noise source
• Noise issue dimension with older spectrum
4 Filters and layout 97
• Interdigital capacito rs
• Bandpass clear out for microwaves
• Hybrid coupler
5 enhancing advertisement gear 127
• Eyal Gal 21.2 - 23.6GHz tranceiver for 24GHz
• changing the Cenager 7HGz module for 5.7GHz
• DXR seven-hundred conversion to 5.7GHz
• utilizing Eyal Gal 11GHz transverter on 10GHz
• 24GHz White Boxes
6 Converters 143
• S Band obtain Converter (uses a YIG LO)
• 144MHz Down Converter
7 Oscillators 161
• DDS utilizing the AD9951
• MMIC oscillator experiments
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The intention of this articlewas to show that there is still development going on in the antenna field, providing some hints to serious antenna, experimenters. 27 Microwave Know How Anten na Array for the Gem Band  When one thinks about antennas for frequencies above a few GHz, the first types that come to mind are probably the parabolic reflector and the horn antennas. Both can be seen as "aperture" antennas, for which gain and directivity are related fundamentally to the ratio between the aperture area and )}.
U4 LT1085CT U7 78105 U6 MAX828EUK  Rl" ,R2, ~;3 attl;lDuator if needed)SM~ 040~ R4 1kQ trimmer, Bourns 3214W R5 OQ0805 R6 500Q trimmers, Bourns 3214W R16 1OOQ fitted with ferrite bead R1S" OQ,t2512, R9 47Q 0603 R8 47kQ 0603 R14 10kQ 1206 R11 12kQ 1206 240Q 1206 R 1QP R12 1206 , & 9t~' ~:5t# . ':-. rgb c M3 ~ PCB from R0-4003C Brass plate 2mm, milled . M ille~ aIUlUin iQ~ . c SMA sockets with Microstrip tags on ergy. The IC (U2) is soldered to the PCB using flux and a hot air gun from the earth side of the PCB.
The impedance seen by the generator at input AB is RL/10, or 300. 28 Hz, were simulated by the Sonnet software. The line was connected between port 1 and port 2 of the simulator. The input signal was injected at port 1 and port 2 was terminated with a resistive load with a variable value. Fig 59 shows the simulated transmission loss (S21) as a function of frequency for a 3000 load. 88Hz. For these particular frequencies, the input impedance is the same as the termination, as a half-wave line reflects the load impedance to the input.
Microwave Knowhow by Andy Barter