Samsung Electronics Co., Ltd.

Hyung Rak Kim

Jea Shik Shin

In Sang Song

Duck Hwan Kim

Chul Kyu Kim

Young Il Kim

Yun Kwon Park

Sang Uk Son

Jae Chun Lee

Dal Ahn

Soo Hyun Kim

Jun Chul Kim

A bulk acoustic wave resonator (BAWR) includes a bulk acoustic resonance unit and at least one compensation layer. The bulk acoustic resonance unit includes a first electrode, a second electrode, and a piezoelectric layer disposed between the first electrode and the second electrode. The first electrode, the second electrode, and the piezoelectric layer each include a material that modifies a resonance frequency based on a temperature, and the at least one compensation layer includes a material that adjusts the resonance frequency modified based on the temperature in a direction opposite to a direction of the modification.

Bulk acoustic wave resonator having a plurality of compensation layers and duplexer using same

A phase shifter using a Bulk Acoustic Wave Resonators (BAWR) is provided. The phase shifter using a BAWR may use a property of a phase shift with respect to a frequency of the BAWR, and also use at least one capacitor, at least one inductor, and the like.

Phase shifter using bulk acoustic wave resonator

A bulk acoustic wave resonator (BAWR) sensor is provided. The BAWR sensor includes a signal BAWR that measures a resonance frequency that is modified due to a reaction with a target material, a reference BAWR that measures a reference resonance frequency without reaction with an external environment, and a sensing unit that senses the target material, based on the modified resonance frequency and the reference resonance frequency.

Bulk acoustic wave resonator sensor

A Radio Frequency (RF) duplexer including Bulk Acoustic Wave Resonators (BAWRs) and an RF filter including BAWRs are provided. The RF duplexer may convert the received signal into a balance signal and output the balance signal via a dual-output port. The RF duplexer may also include a BAWR receiving filter unit including an input end to receive the balance signal from the dual-output port, and an output end used for dual output. The RF duplexer may also include a BAWR transmitting filter unit to transmit a transmitted signal to the antenna via a single-output port.

Radio frequency filter and radio frequency duplexer including bulk acoustic wave resonators in a ladder and a bridge

Provided are low pass filters using a bulk acoustic wave resonator (BAWR). A low pass filter may include an input terminal configured to be connected with a first radio frequency (RF) device, an output terminal configured to be connected with a second RF device, a parallel segment including a first BAWR, a third BAWR, and a fifth BAWR that may be connected in parallel with each other to a reference potential, a first series segment having a second BAWR and a first inductor, and a second series segment having a fourth BAWR and a second inductor, and connected in series with the first series segment.

Low pass filter using bulk acoustic wave resonator (BAWR)

Disclosed is a balun including a film bulk acoustic resonator (FBAR). The balun may be implemented using the FBAR to fabricate a small sized balun. Also, the balun may be implemented using the FBAR, thereby reducing a difference in two outputs.

Balun comprising two conversion circuits each constituted by first to third FBARs

Provided is a structure and disposing method of a radio frequency (RF) layered module using three dimensional (3D) vertical wiring. A first wafer in the RF layered module having the 3D vertical wiring may include a first RF device and at least one first via-hole. A second wafer may include a second RF device and at least one second via-hole disposed at a location corresponding to the at least one first via-hole. A vertical wiring may connect the at least one first via-hole and the at least one second via-hole. The vertical wiring may be configured to be connected to an external device through a bottom surface of the at least one first via-hole or a top surface of the at least one second via-hole.

RF layered module using three dimensional vertical wiring and disposing method thereof

A Bulk Acoustic Wave Resonator (BAWR), a method of manufacturing of the BAWR, and duplexer including the BAWR are provided. The BAWR may include a first substrate including a via hole formed in a predetermined area of a bottom surface of the first substrate. A first air cavity may be formed above the first substrate, and a first lamination resonating portion may be laminated above the first air cavity in sequence of a lower electrode, a piezoelectric layer, and an upper electrode. A second air cavity may be formed above the first substrate, and a second lamination resonating portion may be laminated above the second air cavity in sequence of the lower electrode, the piezoelectric layer, and the upper electrode. The first lamination resonating portion and the second lamination resonating portion may be connected via either the lower electrode or the upper electrode. A first electrode portion may include a third air cavity formed on a bottom surface of either the lower electrode or the upper electrode connecting between the first lamination resonating portion and the second lamination resonating portion.

Bulk acoustic wave resonator structure, a manufacturing method thereof, and a duplexer using the same

An antenna apparatus of a portable terminal and method for implementing characteristics of the antenna apparatus of the portable terminal are disclosed. The antenna apparatus includes a circuit board including a power feeder and a ground, a radiation unit, a power feeder connecting unit for electrically connecting the power feeder to the radiation unit and for feeding electric power to the radiation unit, and a ground connecting unit including at least two paths which have different lengths for electrically connecting the ground to and disconnecting the ground from the radiation unit selectively.

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Seoul, South Korea

Hyung Rak Kim