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In this paper, the design and implementation of medium power amplifier(MPA), 4th sub-harmonically pumped (SHP) mixer, and a wideband single chip transmitter for E-band P2P(Point-to-Point) wireless communication system with 0.1μm GaAs pHEMT process are presented. To obtain wideband characteristic of MPA up to 15GHz, operating band(71–86 GHz), low impedance transmission line matching method has been...
This paper presents a novel 90 GHz band RF transceiver using polarization-division duplex (PDD) technology. A PDD architecture is used for full-duplex communication in the single band. The RF transceiver can deliver 6 Gbps through six channels with a bandwidth of 3 GHz. The channel bandwidth is 500 MHz. A IF combining structure is used for multi-channel. To implement the system, a fourth-harmonically...
In this paper, we has proposed E-band(71–76GHz and 81–86GHz) transceiver module for Gbps wireless point-to-point(P2P) link system. For wideband operating characteristic of transceiver, medium power amplifier(MPA), which has wide operating range up to 15GHz, has been designed and fabricated. And, for easy LO generation, Sub-harmonically pumped(SHP) mixer also has been designed and fabricated. The measured...
In this paper, wireless communication link system for gigabit Ethernet using 60 GHz band has been designed and implemented. For FDD with available continuous 7 GHz, QPSK modulation has been used. System performance of link distance has been verified with indoor test.
80–100GHz sub-harmonically pumped(SHP) and fourth-harmonic pumped (FHP)mixers are designed for point-to-point(P2P) communications. They are fabricated on a 2-mil 0.1µm GaAs pHEMT process. From measured results, SHP mixer shows conversion loss of 9.5 ∼ 11dB and input P1dB of +2dBm with LO signal of 40 ∼ 44GHz. FHP mixer has conversion loss of 16 ∼ 17dB and input P1dB of −2dBm with LO signal of 20 ∼...
In this paper, an LTCC cavity backed array antenna in order to improve the radiation efficiency and bandwidth is proposed. LTCC cavity consists of several ground planes and dielectric layers with closely spaced metallic vias connected. It is shown that the size of an LTCC cavity has the effects on the performances of radiation and bandwidth for the antenna. This design is applied to Ferro A6 LTCC...
Design of stacked circular patch antenna having the omni-directional in the azimuth plane has been proposed for very short range 60 GHz WPAN application. The proposed antenna uses LTCC technology, which makes easier to integrate with a transceiver chip.
In this paper the rectangular cavity resonator that is available to use at a millimeterwave oscillator was designed with LTCC multilayer. LTCC green sheet is DuPont 943 and side wall of cavity is constructed by 2 low via because of high wall isolation. In every layer rectangular ring patterns are used instead of via catch pad. Normal rectangular cavity resonator and folded rectangular cavity resonator...
In this paper, we present design, implementation and measurement of 3-D mm-wave LTCC (low temperature co- fired ceramic) module with vertical transition through FR-4 PCB substrate. A new structure in order to transfer mm-wave signal from transceiver module through an opening in FR-4 PCB substrate to antenna with standard WR-22 waveguide port is proposed. The module features front-end, receiver and...
In this paper, we present design, implementation and measurement of 3D mm-wave LTCC (low temperature co-fired ceramic) module with vertical transition through FR-4 PCB substrate. A new structure in order to transfer mm-wave signal from transceiver module through an opening in FR-4 PCB substrate to antenna with standard WR-22 waveguide port is proposed. The module features front-end, receiver and transmitter...
Design and fabrication of 8times8 stacked patch array antenna with the WG-to-MS transition operating at 40 GHz band based on 6 layers LTCC technology were proposed in this paper. Various measurements of reflection coefficient and gain have been presented and found to be in good agreement with the simulation results
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