Radio frequency tranceiver front-end device
US-9219518-B1 · Dec 22, 2015 · US
Circuit of wireless transceiver chip
US9525452B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9525452-B2 |
| Application number | US-201514944325-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 18, 2015 |
| Priority date | Jan 22, 2015 |
| Publication date | Dec 20, 2016 |
| Grant date | Dec 20, 2016 |
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- Title
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- Abstract
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- Assignees and inventors
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- CPC / IPC classifications
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Abstract
Official abstract text for this publication.
A circuit of a wireless transceiver chip is disclosed. In the circuit of the wireless transceiver chip of the present invention, a capacitor is connected between the secondary conductor of the transformer in the transmitter circuit and the ground pad to form a notch filter for filtering the image signal. An ESD protection circuit is connected with the capacitor in parallel. Since the ESD protection circuit is not connected to the signal receiving path, the performance of the chip would not be degraded.
First claim
Opening claim text (preview).
What is claimed is: 1. A circuit of a wireless transceiver chip comprising: a transceiver pad connected to an antenna; a ground pad connected to ground; a transmitter circuit for amplifying a transmitting signal, wherein the transmitter circuit has a transformer with a primary conductor and a secondary conductor, the secondary conductor has a first end and a second end, the first end is connected to the transceiver pad; a receiver circuit connected to the first end and the second end of the secondary conductor for receiving a receiving signal; a switch circuit connected between the receiver circuit and the secondary conductor; and a filter capacitor connected between the second end of the secondary conductor and the ground pad. 2. The circuit as claimed in claim 1 , further comprising an electrostatic discharge protection circuit connected to the filter capacitor in parallel. 3. The circuit as claimed in claim 1 , further comprising a resistor connected to the filter capacitor in parallel. 4. The circuit as claimed in claim 1 , wherein the switch circuit comprises a first switch unit connected between the first end and the second end of the secondary conductor. 5. The circuit as claimed in claim 1 , wherein the receiver circuit comprises a filter unit. 6. The circuit as claimed in claim 5 , wherein the filter unit comprises a capacitor and an inductor connected in series. 7. The circuit as claimed in claim 6 , wherein the switch circuit comprises a first switch unit and a second switch unit connected between the two ends of the inductor of the filter unit and the second end of the secondary conductor respectively.
Assignees
Inventors
Classifications
- H04B1/44Primary
Transmit/receive switching · CPC title
- H03H7/1783Primary
Combined LC in series path · CPC title
Electrical filters or coupling circuits · CPC title
Notch or bandstop filters · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9525452B2 cover?
- A circuit of a wireless transceiver chip is disclosed. In the circuit of the wireless transceiver chip of the present invention, a capacitor is connected between the secondary conductor of the transformer in the transmitter circuit and the ground pad to form a notch filter for filtering the image signal. An ESD protection circuit is connected with the capacitor in parallel. Since the ESD protec…
- Who is the assignee on this patent?
- Airoha Tech Corp
- What technology area does this patent fall under?
- Primary CPC classification H04B1/44. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Dec 20 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).