Abstract: System and method for reducing substrate warpage in a thermal process. An embodiment comprises pre-heating a substrate in a loadlock chamber before performing the thermal process of the substrate. After the thermal process, the substrate is cooled down in a loadlock chamber. The pre-heat and cool-down process reduces the warpage of the substrate caused by the differences in coefficients of thermal expansion (CTEs) of the materials that make up the substrate.

Abstract: According to embodiments of the present invention, a circuit arrangement is provided.

Abstract: According to embodiments of the present invention, a quadrature voltage controlled oscillator is provided.

Abstract: A low-pass filter includes an input portion inputting an electromagnetic signal, an output portion outputting the electromagnetic signal, a high impedance transmission portion electrically connecting the input portion and the output portion to transmit the electromagnetic signal therebetween, and a pair of low impedance transmission members arranged on opposite sides of the high impedance transmission portion. Each of the low impedance transmission members electrically connects the input portion, the output portion, and the high impedance transmission portion, and includes a first low impedance transmission portion and a second low impedance transmission portion. A width of the first low impedance transmission portion is different from that of the second low impedance transmission portion.

Abstract: A tridimensional antenna includes a radiating body, a feeding foot, a grounding foot, and a supporting foot. The feeding foot and the grounding foot are connected to the radiating body. The supporting foot includes a supporting portion, at least one groove and a bent portion. The bent portion connects the radiating body and the supporting portion. The groove is defined in the supporting portion and adjacent to the bent portion. The tridimensional antenna is mounted on a substrate by surface mounted technology (SMT). The feeding foot and the grounding foot are soldered on the substrate. The supporting foot is bent to break away the supporting portion at the groove after mounting of the tridimensional antenna.

Abstract: A low-pass filter (10) includes an input portion (100) inputting an electromagnetic signal, an output portion (120) outputting the electromagnetic signal, a high impedance transmission portion (140) electrically connected to the input portion and the output portion to transmit the electromagnetic signal therebetween, a first low impedance transmission portion (160) electrically connected to the input portion and an end of the high impedance transmission portion, and a second low impedance transmission portion (180) electrically connected to the output portion and another end of the high impedance transmission portion. The two low impedance transmission portions are arranged beside the high impedance transmission portion, and each of the low impedance transmission portions is triangular.

Abstract: A directional coupler includes two parallel coupled lines and two sector metal plates. The two sector metal plates are connected to a middle portion of each of the two coupled lines. Central angles of the two sector metal plate are less than 90 degrees.

Abstract: A directional coupler includes two parallel coupled lines and two sector metal plates. The two sector metal plates are connected to a middle portion of each of the two coupled lines. Central angles of the two sector metal plate are less than 90 degrees.

Abstract: A low-pass filter includes an input portion inputting an electromagnetic signal, an output portion outputting the electromagnetic signal, a high impedance transmission portion electrically connecting the input portion and the output portion to transmit the electromagnetic signal therebetween, and a pair of low impedance transmission members arranged on opposite sides of the high impedance transmission portion. Each of the low impedance transmission members electrically connects the input portion, the output portion, and the high impedance transmission portion, and includes a first low impedance transmission portion and a second low impedance transmission portion. A width of the first low impedance transmission portion is different from that of the second low impedance transmission portion.

Abstract: A low-pass filter (10) includes an input portion (100) inputting an electromagnetic signal, an output portion (120) outputting the electromagnetic signal, a high impedance transmission portion (140) electrically connected to the input portion and the output portion to transmit the electromagnetic signal therebetween, a first low impedance transmission portion (160) electrically connected to the input portion and an end of the high impedance transmission portion, and a second low impedance transmission portion (180) electrically connected to the output portion and another end of the high impedance transmission portion. The two low impedance transmission portions are arranged beside the high impedance transmission portion, and each of the low impedance transmission portions is triangular.

Abstract: A balun includes a first transforming part (30) and a second transforming part (40). The first transforming part includes a first coupled line (32), a first transmission line (34), a second transmission line (36), and a first capacitor (C1). The first transmission line includes a first balanced port (2). The second transmission line includes a second balanced port (3). The first capacitor connects the first balanced port and the second balanced port. The second transforming part includes a second coupled line (42), a third transmission line (44), a first line node (48), a second capacitor (C2), a fourth transmission line (46), a second line node (49), and a third capacitor (C3). The third transmission line includes an unbalanced port (1). The second capacitor connects the third transmission line and the first line node. The third capacitor connects the fourth transmission line and the second line node.

Abstract: A method for mounting a tridimensional antenna includes steps of: providing the tridimensional antenna including a radiating body, a feeding foot, a grounding foot, and a supporting foot, the feeding foot and the grounding foot connected to the radiating body, the supporting foot including a supporting portion, at least one groove and a bent portion, the bent portion connecting the radiating body and the supporting portion, the groove defined in the supporting portion and adjacent to the bent portion; the tridimensional antenna mounted on a substrate by surface mounted technology (SMT); the feeding foot and the grounding foot soldered on the substrate; and the supporting foot broken away at the groove after mounting of the tridimensional antenna.

Abstract: A filter (20) includes an input part (200), an output part (202), a first portion (22), a second portion (24), and a third portion (26). The input part is for receiving electromagnetic signals, and the output part is for transmitting the electromagnetic signals. The first portion with high impedance is electronically connected to the input part and the output part. The second portion with low impedance is electronically connected to two ends of the first portion. The third portion partially surrounds the second portion, and is electro-magnetically coupled to the second portion.

Abstract: A balun includes a first transforming part (30) and a second transforming part (40). The first transforming part includes a first coupled line (32), a first transmission line (34), a second transmission line (36), and a first capacitor (C1). The first transmission line includes a first balanced port (2). The second transmission line includes a second balanced port (3). The first capacitor connects the first balanced port and the second balanced port. The second transforming part includes a second coupled line (42), a third transmission line (44), a first line node (48), a second capacitor (C2), a fourth transmission line (46), a second line node (49), and a third capacitor (C3). The third transmission line includes an unbalanced port (1). The second capacitor connects the third transmission line and the first line node. The third capacitor connects the fourth transmission line and the second line node.