Antenna Dedign in the 121 Mhz and 406 Mhz range

To whom it may concern, I´m a Electronic Engineer with more than 30 years of experience acquired through working positions in companies in USA and Europe, leading a team of Electronic, CAD, Mechanical, Naval & Embedded Systems Engineers and technicians, offers a broad range of specialized skills, and with recognized experience in industry and research groups. Can simulate, design and manufacture almost any Electronic circuit/design, RF & MW component, system or subsystem up to 40 GHz, Custom Instrumentation & Embedded Systems with Arduino or Raspberry PI, can provide final working prototypes, and short or long manufacture series. For RF&MW design and simulation we use and have vast experience with HFSS, CST, MWO & ADS. We would like to work in your project; In order to provide you the right quote and timeline we have the following questions: -What type of antenna do you actually have e.i. blade, patch array, dipole, etc.? -Do you need to integrate the antenna in the same case/enclosure you have? -Bandwidth needed? -RF input power? - Gain? - Polarization? -Connector type N-TNC, etc?. Unfortunately I can send you brochure, please see us at www south-field com, the quoted price is for reference only, until we have all details and your exactly needs. If you have any questions do not hesitate to contact me, hoping we meet your needs and hear from you soon. Regards, Amador Garcia

Hi i am an Avionics engineer with specialization in RF and Microwave circuits/antennas I have research publications in IEEE on antennas I have two solutions for your problem, one involving a SPDT switch and the other one involves power divider/filter. You are not clear in specifications. kindly PM me so that we can discuss and i can get a better idea Regards Usman

Hi, I have 9 years of working for the design and development of antennas. I have been involved in the design, development and repair of variety of antennas. I Use ADS and HFSS for simulating my antenna models. I have designed 11 different types of antennas in the frequency range of 20 MHz to 18 GHz which were started from scratch going through all the study, design, modeling in HFSS, Simulation, Optimization, prototyping, testing and to the final model. I have worked in both the domains structure based designs and striplines as well. Here is the list of antenna types i have worked for. -Patch Antennas -Patch Antenna array with Corporate feed -Meandered Monopole -Quad ridged Horn Antenna -Vivaldi Antenna -Blade antennas -discone antennas -super discone antennas -inverted double discone antennas -log periodic antennas -spiral antennas Samples can be provided if you are interested. Kindly let me know the size constraints about the existing antenna along with the radome dimensions. I hope you want to use the existing radome for this design, but if you want to design a new radome, i can also do that. I can design the antenna, simulate it using HFSS alongwith Radome and can prototype if needed. At the end i can provide you the CAD drawings along with all the necessary files for fabrication. Looking forward to hear from you. Regards

I use CST microwave studio to sumulate the solution. Please, I do need connector type, diagram needed (omni or sectorial), ROE máx, max power admited and polarizarion (lineal or circular (L or R)). I guess you´d like same features as 406MHz on the dual model. Regards.-

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Hi, I am electrical engineer with specialization in antennas. Worked on microstrip patch antennas kindly send me details of the project