Conventionally, an image forming apparatus including a plurality of antennas for detecting for an arrival direction of a radio wave was not invented. In the present invention, a communication board including a plurality of antennas for wireless communicating with a communication terminal is provided on a front side with respect to a front-rear direction of an image forming apparatus including an imager forming unit in a vertical direction.

A microstrip collinear array includes a bearing member, two first antenna assemblies, two second antenna assemblies, a first connecting line, and a second connecting line. The two first antenna assemblies are juxtaposed on the bearing member. Each of the first antenna assemblies includes several first planar antennas. The two second antenna assemblies are juxtaposed on the bearing member and are respectively and correspondingly located on an opposite side of the two first antenna assemblies. Each of the second antenna assemblies includes several second planar antennas. The first connecting line and the second connecting line are disposed on the bearing member. The second connecting line is located on an opposite side of the first connecting line and is electrically connected to the first connecting line. The first connecting line is electrically connected to the first antenna assemblies. The second connecting line is electrically connected to the second antenna assemblies.

A microstrip collinear array includes a bearing member, two first antenna assemblies, two second antenna assemblies, a first connecting line, and a second connecting line. The two first antenna assemblies are juxtaposed on the bearing member. Each of the first antenna assemblies includes several first planar antennas. The two second antenna assemblies are juxtaposed on the bearing member and are respectively and correspondingly located on an opposite side of the two first antenna assemblies. Each of the second antenna assemblies includes several second planar antennas. The first connecting line and the second connecting line are disposed on the bearing member. The second connecting line is located on an opposite side of the first connecting line and is electrically connected to the first connecting line. The first connecting line is electrically connected to the first antenna assemblies. The second connecting line is electrically connected to the second antenna assemblies.

A distributed antenna includes a strip member extending in a strip-like shape including a dielectric body of a plate shape having a first surface that is one surface of the dielectric body and a second surface that is opposite to the first surface; a transmission line provided on the first surface, on the second surface, or between the first surface and the second surface; and a plurality of antenna elements electrically connected to the transmission line and disposed in a distributed manner on the first surface or on the second surface, or electrically connected to the transmission line and disposed in a distributed manner between the first surface and the second surface.

In some aspects, an apparatus includes a transformer including a first inductor, a second inductor, and a third inductor. The apparatus also includes a power amplifier coupled to the first inductor, a first antenna coupled to a first terminal of the second inductor, a second antenna coupled to a second terminal of the second inductor, a first switch coupled between the first terminal of the second inductor and a ground, a second switch coupled between the second terminal of the second inductor and the ground, and a low-noise amplifier coupled to the third inductor.

In some aspects, an apparatus includes a transformer including a first inductor, a second inductor, and a third inductor. The apparatus also includes a power amplifier coupled to the first inductor, a first antenna coupled to a first terminal of the second inductor, a second antenna coupled to a second terminal of the second inductor, a first switch coupled between the first terminal of the second inductor and a ground, a second switch coupled between the second terminal of the second inductor and the ground, and a low-noise amplifier coupled to the third inductor.

A distributed transmitter antenna includes a plurality of antenna segments and a plurality of transmitters. A first transmitter of the plurality of transmitters is coupled to a first antenna segment of the plurality of antenna segments, and a second transmitter of the plurality of transmitters is coupled to the first antenna segment and a second antenna segment of the plurality of antenna segments.

A distributed transmitter antenna includes a plurality of antenna segments and a plurality of transmitters. A first transmitter of the plurality of transmitters is coupled to a first antenna segment of the plurality of antenna segments, and a second transmitter of the plurality of transmitters is coupled to the first antenna segment and a second antenna segment of the plurality of antenna segments.

An implantable medical device may include each of a conductive canister, a printed circuit board assembly (PCBA), and a header. A feedthrough and ferrule couple the interior of the canister, where the PCBA is, to one or more elements contained in the header such as an antenna and/or a port for coupling to a lead. The ferrule may be directly attached to the conductive canister and the electronic circuit board. The electronic circuit board carries an RF transmitter for telemetry purposes, and has an RF ground plane layer therein. The ferrule is capacitively coupled to the RF ground plane the PCBA, and has a size and/or shape relative to the RF ground plane that provides sufficient capacitance to offer an improved RF ground plane path to the conductive canister at a desired telemetry frequency.

The present disclosure provides a display module and a mobile terminal. The display module includes a screen cover plate, a first antenna array, a first flexible circuit board, and a first radio frequency integrated circuit; where the first antenna array is arranged in a first region of the screen cover plate; the first radio frequency integrated circuit is arranged on the first flexible circuit board, and is electrically connected to the first antenna array through the first flexible circuit board.