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High Directivity Microstrip Coupler with Asymmetric Structure
-
S. Maheswari
und
T. Jayanthy
Veröffentlicht/Copyright:
19. August 2014
Abstract
A method to improve the directivity of the microstrip coupler is presented. The pattern of the coupler is modified for phase velocity compensation, which results in high directivity. Using this procedure, two 15 dB couplers are designed and fabricated at 0.9 GHz. A high directivity of 35 dB and 39 dB are measured. The validity of the design concept is verified by simulations and measurements.
PACS: 84.40.Az
Received: 2014-3-19
Published Online: 2014-8-19
Published in Print: 2014-9-30
©2014 by Walter de Gruyter Berlin/Boston
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Artikel in diesem Heft
- Frontmatter
- Laudatio Prof. Groll zum 90. Geburtstag
- Nachruf Prof. Dr.-Ing. Heinz Chaloupka
- Reference Plane Transformation of Continuous Mode Terminations for Broadband Power Amplifiers
- Potential of Coplanar X-band GaN-MMIC Power Amplifiers
- High Directivity Microstrip Coupler with Asymmetric Structure
- Three-Pole Tunable Bandpass Filters With Constant Fractional Bandwidth Using Mixed Comb-line Resonators
- UWB Band-notched Adjustable Antenna Using Concentric Split-ring Slots Structure
- Evaluation of Cathode Heater Assembly for 42 GHz, 200 kW Gyrotron
- Optical Solitons in Magneto-optic Waveguides with Spatio-temporal Dispersion
- Outage Analysis of Dual-hop Cognitive Networks with Relay Selection over Nakagami-m Fading Environment
- A Novel Nonlinear Companding Transform for PAPR Reduction in Lattice-OFDM System
- On the First and the Second Order Statistics of the Capacity of κ-μ Fading Channels
- On the Performance of the Golden Code in the Presence of Channel Estimation Error in Correlated MIMO Rayleigh Fading Channels
- Evaluations of SSC Diversity Receiver over EGK Fading Channels
- New Tone Reservation Technique for Peak to Average Power Ratio Reduction
Artikel in diesem Heft
- Frontmatter
- Laudatio Prof. Groll zum 90. Geburtstag
- Nachruf Prof. Dr.-Ing. Heinz Chaloupka
- Reference Plane Transformation of Continuous Mode Terminations for Broadband Power Amplifiers
- Potential of Coplanar X-band GaN-MMIC Power Amplifiers
- High Directivity Microstrip Coupler with Asymmetric Structure
- Three-Pole Tunable Bandpass Filters With Constant Fractional Bandwidth Using Mixed Comb-line Resonators
- UWB Band-notched Adjustable Antenna Using Concentric Split-ring Slots Structure
- Evaluation of Cathode Heater Assembly for 42 GHz, 200 kW Gyrotron
- Optical Solitons in Magneto-optic Waveguides with Spatio-temporal Dispersion
- Outage Analysis of Dual-hop Cognitive Networks with Relay Selection over Nakagami-m Fading Environment
- A Novel Nonlinear Companding Transform for PAPR Reduction in Lattice-OFDM System
- On the First and the Second Order Statistics of the Capacity of κ-μ Fading Channels
- On the Performance of the Golden Code in the Presence of Channel Estimation Error in Correlated MIMO Rayleigh Fading Channels
- Evaluations of SSC Diversity Receiver over EGK Fading Channels
- New Tone Reservation Technique for Peak to Average Power Ratio Reduction
