Author name: Dolph

A circular waveguide refers to a waveguide with a circular cross-section. The lowest order propagation mode in a circular waveguide is TE11, which provides minimal signal degradation. The possible TM modes in circular waveguides are TM01, TM02, TM11, and TM12. The modes maintained by circular waveguides have many similarities with those of rectangular waveguides. For […]

The 4-port differential phase shift isolators is a combined waveguide device. When the microwave signal passes through the isolator, it can be transmitted with low loss in the forward direction and has high isolation in the reverse direction. It is composed of a 3dB combiner/divider, a parallel ferrite 90° non-reciprocal phase shifter, and a folded

To achieve complete coverage with a minimum s-band antenna gain of -7 dBi, a straightforward configuration utilizing dual circularly polarized microstrip patch antennas was employed. The configuration involved the implementation of a wide bandwidth, dual circularly polarized truncated corner microstrip antenna, which was complemented by two parasitic patches. To enhance the cross polarization bandwidth, diagonally

Dolph Microwave places significant design emphasis on optimizing the selection and bias point of the ferrite material used in their circulators. This prioritization is aimed at minimizing the insertion loss and maximizing the isolation at the desired frequency, bandwidth, and power level. By carefully choosing and biasing the ferrite material, Dolph Microwave ensures that the

The log-periodic antenna is the main preferred form of the low-frequency UWB directional antenna. This antenna family has the remarkable capability to cover octave bandwidth or even UWB bandwidth of nearly 100 octaves. With a potential gain of up to 9 dB, it offers a significant boost to signal reception and transmission. At ultra-low frequencies,

What is the diameter of the Parkes Observatory in Australia? The Parkes Observatory, located in Australia, boasts a remarkable diameter of 210 feet (64 meters). What is the diameter of the Algonquin Radio Observatory in Canada? The Algonquin Radio Observatory, located within the picturesque Algonquin Provincial Park in Ontario, Canada, boasts a striking focal point

The Ka-band OMT from Dolph Microwave is an Orthomode Transducer that operates within the frequency range of 17 to 31 GHz. With an isolation level of 35 dB, this OMT ensures minimal interference or leakage between its ports, providing a high level of isolation. Additionally, it boasts a return loss of 13.98 dB, indicating efficient

Oct. 26th, 2023 – Xi’an, SHAANXI – DOLPH-MW is an Specializing in the design and fabrication of high power microwave waveguide components. Compared with the 3-port “Y” type circulator, the 4-port differential phase shift circulator has a higher power tolerance and can meet the high power usage requirements of KW ~ MW. It has been