Antenna Design and Fabrication with Circular Microstrip Patch: A Review

The paper presents a review on antenna designing and fabrication techniques with Microstrip Patch (MSP) development. The requirements of MSP are remote controlling, mobile communication, space communication and all wireless communication areas. Aim of this development is to provide a new approach of the designing and simulation of circularMSP for 5.8 GHz operating frequency. CST MICROWAVE STUDIO (MWS) facilitates the quick and accurate analysis of high frequency (HF) antennas which gives the responses and results before fabrication of actual patch with complete technology for 3D EM. FR-4 glass epoxy material board is used for fabrication which is admired and adaptable highpressure thermoset plastic laminate grade with superior strength to weight ratios. Circular MSP is easy to fabricate, portable, lightweight and low cost antenna. N9923A Field Fox RF VNA (Vector Network Analyser) were used for studying and testing all the parameters of fabricated MSP

Impact of Seed Rate and Nutrient Management on Growth Analysis of Chickpea under Semi-Arid Zones

Aim: To study the effect of seed rate and nutrient management on growth and development of chickpea. Study Design: The study consisted of mechanized sowing at different planting densities as one factor which required a bigger plot size and second factor was nutrient management which is to be analyzed precisely. Thus as one factor (planting densities) need a bigger plot size and the other (nutrient management) required a more precise results with small plot size, suitable design for the study was chosen as split-plot design. Place and Duration of Study: Agricultural Research Institute (ARI), Main Farm, Professor Jayashankar Telangana State Agricultural University, Rajendranagar, Hyderabad during rabi 2020-21 and 2021-22. Methodology: This experiment consisted of four seed rates (planting densities with planter) imposed in main plots and seven nutrient management practices in sub plots with a total of 28 treatment combinations and replicated thrice. Data obtained on various parameters were analysed using WINDOSTAT software for split plot design. Results: Crop growth indices viz., absolute growth rate, relative growth rate and net assimilation were found to be significantly higher with the seed rate of 52 kg ha-1 (321.4 mg day-1, 19.5 and 2.07 mg g-1 day-1) respectively. Among the nutrient management practices, 125 % RDF + Soil application of Microbial consortia (N –Azotobacter + PSB + KRB+ ZnSB) @ 5 kg ha-1  resulted in significantly higher values of all crop growth indices followed by 125 % RDF and 100 % RDF + Soil application of Microbial consortia (N –Azotobacter + PSB + KRB+ ZnSB) @ 5 kg ha-1 (256.5 mg day-1 and 17.1 mg g-1 day-1) respectively. Conclusion: Seed rate of 52 kg ha-1 and 125 % RDF along with soil application of Microbial consortia (N –Azotobacter + PSB + KRB+ ZnSB) @ 5 kg ha-1 resulted in better growth and development which can be recommended for obtaining higher yield of chickpea